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NeXT Computer, Inc. => NeXT Work Logs => Topic started by: Rob Blessin Black Hole on May 08, 2014, 08:23:08 am

Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on May 08, 2014, 08:23:08 am
Hello NeXT Community : Has anyone out there successfully hacked a NeXT ADB sound board to work with NeXT non adb components? Here is the situation NON adb soundboxes are becoming harder to come by and so are working 4000 and 4000a monitors. I have enough NeXT ADB soundboards in soundboxes to allow for experimenting with a conversion kit.
All NeXT roms before V74 are only usable with Non adb NeXT components
I found this useful thread describing the differences http://newsgroups.derkeiler.com/Archive/Comp/comp.sys.next.hardware/2005-07/msg00009.html
I have a couple guys that are going to help and I'm donating a turbo color with a v74 chip and both adb and non adb components to the project.
Any assistance appreciated , does anyone have the schematics for the pcb sound boards ?
This allows us to use flatpanel monitors with a custom y monitor cable.
Also need to figure out why a cube later model 983 power supply will work and the 152 won't and if there is a way to modify the 152 to become a 983 as this opens up a lot more cube to work with displays!
Ps if you have a cache of non adb soundboxes or NeXT monitors please let me know !
Best regards Rob Blessin
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on May 18, 2014, 10:14:52 pm
I think the 983 power supply doesn't need the same draw as the 152 to stay on... that's largely it.

For ADB to non-ADB conversion: the ASIC is basically just a multiplexer from what I can see. From probing with an LA, it appears there are 3 subsystems for dealing with the sound, volume, and keyboard/mouse, each with their own internal bus. To take an ADB board and have it work with a non-ADB system, it looks like you'd have to change the  keyboard subsystem and possibly the ASIC as well.

I know from hacking around on the soundbox replacement that the system/ASIC polls the keyboard and mouse, and it seems to basically just take the response and shove it onto the bus to the host (reversed order, so I guess there's a buffer in there). My theory is that the system queries the ASIC for the connected devices at startup, because there is a different sequence of packets at first boot. Probably one part of the response is the connected device(s) type(s), and the v74 ROM can handle a response indicating an ADB or a response handing non-ADB, and that it has code for dealing with the ADB protocol (I think the ADB packets are sent largely unchanged from the ASIC, but I might be wrong... I haven't spent as much time there).

I think there might need to be a change to the ASIC as well because of the difference in the ADB and non-ADB device protocols... ADB is only a single wire.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on May 18, 2014, 11:07:48 pm
It is interesting that you can hot swap a non adb keyboard or mouse or both with out rebooting but with adb components you have to reboot to have them synche.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on May 19, 2014, 12:19:12 am
The hot swap is because the ASIC is polling the keyboard/mouse... if you unplug them you can see the packets being sent change (I forget, but there's one which is obviously a reset packet, followed by a read). That's why I think you might have to change the ASIC... the way the ASIC deals with ADB/non-ADB are probably quite different.

I haven't spent a lot of time with ADB peripherals and an LA, so I could be wrong...
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on July 31, 2014, 07:12:26 am
All,

I'm continuing to work on this, and I don't think the ADB version is using the ASIC at all for the keyboard. More updates to come...

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on July 31, 2014, 08:31:46 am
So I traced the connection from the data line on the ADB keyboard and it appears to go directly to the 19 pin connector. The non-adb definitely goes into the ASIC before reaching the 19 pin connector. Unfortunately I was not able to get an ADB keyboard to work by directly connecting it. Here's the interesting part though, I've gotten the ADB soundbox to supply 68HZ instead of 72. My theory is that the ASIC can be configured to work with the non-adb with some rework. Too late tonight, but hopefully I can look into it more this weekend.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on August 01, 2014, 12:20:09 am
It may be that the the ADB keyboard support is provided by the motherboard, but I do know that for non-ADB the monitor cable acts as a kind of bus, and the soundboard acts primarily as a means to multiplex the signals to/from the keyboard, audio, and volume controller and motherboard, and that the ASIC contains most of the logic for it. FWIW. ADB keyboards do require a particular BIOS version for at-boot support.

I put an LA on the keyboard etc. and they appear to all have their own protocol that the ASIC works with... usually in the 10s of Hz, while the main bus is 5MHz.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 01, 2014, 01:56:58 am
So to test my theory I cut the data pin on the adb sound board and patched it directly to pin 5. Works perfectly which tells me the next is controlling adb devices directly. The pins on the ASIC for non adb were tied. By leaving them floating I get 68hz instead or 72. I'm hopeful I can replicate the missing part of the circuit and hook into those pins.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 01, 2014, 03:26:01 am
So lesson of the day. Don't take conventional wisdom at face value. I decided to take another look today and figure out why I couldn't make the keyboard work correctly directly connected. I was using the pinout I'm sure we've all seen from netbsd.

       10                  1
     _________________________
     \  o o o o o o o o o o  /
      \  o o o o o o o o o  /
       ---------------------
       19                11
+12V
-12V
MON CLK
MON DATA OUT
MON DATA IN
MON PWR SWITCH
NC
VSYNC
HSYNC
VIDEO
+12V
-12V
GND
GND
GND
GND
GND
GND
GND

As it turns out pin 7 -IS- used for ADB. And by that I mean pin 7 is the ADB bus. Directly connected to the NeXT. In other words, if you don't care about sound, the soundbox is entirely unnecessary to have a functioning device. Just provide 5V for the keyboard, hook the power button to pin 6 and the ADB data pin to pin 7. While not the full solution we're looking for, I think this is huge in terms of getting more machines up and running. There are still plenty of mac ADB devices around. So if you have a turbo system with the correct ROM, you now have alternatives to the sound box. I'm pretty excited about this revelation. That much closer to the goal...


EDIT:

I should mention, that makes my previous comment about pin 5 incorrect. I was tired enough to count the pins upside down :D

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 01, 2014, 04:02:14 am
Picture of the process.

Initial prototype

https://www.dropbox.com/s/cn6wgnu17ddtsrj/IMG_0568.jpg

I have a USB hub so I settled on using that for power. I have my custom switch box for my non-adb keyboard so this isn't anything I intend to use long term. If you want an all-in-one solution then you could easily use a 5V voltage regulator.

https://www.dropbox.com/s/xikdmmvycrq4vku/IMG_0569.JPG

https://www.dropbox.com/s/a27fekeoudy8cjh/IMG_0571.JPG

https://www.dropbox.com/s/pujv3z0yz66e4gj/IMG_0572.JPG

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: jroark on August 01, 2014, 05:45:28 am
Neat, you could make a very simple vga adb pass through!
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on August 02, 2014, 01:09:24 am
What ROM version are you running? I'm assuming a later ROM because earlier ROMs didn't have ADB support. This help to explain why ADB devices had some minor incompatibility issues with some apps too.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 02, 2014, 03:31:16 am
I'm testing on a turbo color nextstation with the v74 ROM. I haven't verified, but I think the difference is going to be more than software. I won't be surprised if pin 7 is actually left unconnected on the earlier revision logic boards. The up side is I'm feeling pretty confident that a modification to make an adb sound board non-adb compatible is possible. Another thing I was thinking about is that we could use the header on the sound board for VGA instead of the custom Y-cable. It would be a much cheaper solution if you already have the standard monitor cable.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 02, 2014, 06:27:15 am
I'm just going to let these speak for themselves....

https://www.dropbox.com/s/6cpz880uc5omshy/IMG_0574.jpg

https://www.dropbox.com/s/0bquepf1h02u26n/IMG_0575.JPG

YES. That is an ADB soundboard working with a non-ADB keyboard and mouse. We have a solution. I'll work on a formal write-up with some pics and do a bit more testing to be sure it's stable.

So to sum up:

1) Machines that currently use ADB sound boxes -do not- need the soundbox to function. If you can live without sound you can hook an ADB keyboard directly to pin 7 of the 19 pin connector.

2) If you have an ADB sound board it can be converted to non-adb by cutting a couple traces and adding some passive components.

3) I really need to sleep more. ;)

In addition, regarding the power supply, I highly recommend that the 152 not be modified. I do not believe it is safe to operate without the minimum load. There are 2 options. Create a load on the -12V rail, like I have shown with either a fan or a bulb, or you can also source an appropriately sized 1U ATX power supply and modify it using the instructions I have provided.


--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: jroark on August 02, 2014, 06:49:30 am
Very nice, can you you use the modified adb soundboard on a non turbo system?
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 02, 2014, 07:00:23 am
Yes. I have tested with an 030 cube and it is working without a problem.

https://www.dropbox.com/s/or2ott08bzm6017/IMG_0576.JPG

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 02, 2014, 08:12:48 am
Full details here:

https://www.dropbox.com/s/g27eqfy08oq06pz/Next%20ADB%20Convertion.pdf

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 02, 2014, 10:27:07 am
Hello Brian Archer : Thanks a million .... A couple things that will be interesting to test with the modified adb to non adb board .
Looks like it works with earlier version of the rom back to 030, earlier monitor cables .
if you unplug the non adb keyboard from the modified adb soundbox and plug it back in does it synche back up with non Adb? As adb once disconnected won't reconnect may be it has to do with the non adb components talking to the ASIC.
I have a ton of new adb soundboards and new non adb keyboard connectors as well as soundbox shells the conversion works with earlier roms that is way cool.
I'm ready to solder and cut traces lol but probably need an arrow on the photos also if you need any adb soundboards to tinker with I can send you a few free of charge with the shells and connectors for you efforts.
Can a soundboard be both adb and non adb compatible ... 2 keyboard connectors and a toggle switch ... I'm guessing it would have to close and open the modified circuits with wizardry .
The soundboards all used the same speaker , will other speakers work without damaging the board?
Does the microphone and sound work on the modified board ?
For the modified 152 would it be possible to add an outlet (gfci?) internally in the cube to plug in the flatpanel or other peripherals like a wireless buffalo router and safely create load ?  
You the man

Quote from: "barcher174"I'm just going to let these speak for themselves....

https://www.dropbox.com/s/6cpz880uc5omshy/IMG_0574.jpg

https://www.dropbox.com/s/0bquepf1h02u26n/IMG_0575.JPG

YES. That is an ADB soundboard working with a non-ADB keyboard and mouse. We have a solution. I'll work on a formal write-up with some pics and do a bit more testing to be sure it's stable.



So to sum up:

1) Machines that currently use ADB sound boxes -do not- need the soundbox to function. If you can live without sound you can hook an ADB keyboard directly to pin 7 of the 19 pin connector.

2) If you have an ADB sound board it can be converted to non-adb by cutting a couple traces and adding some passive components.

3) I really need to sleep more. ;)

In addition, regarding the power supply, I highly recommend that the 152 not be modified. I do not believe it is safe to operate without the minimum load. There are 2 options. Create a load on the -12V rail, like I have shown with either a fan or a bulb, or you can also source an appropriately sized 1U ATX power supply and modify it using the instructions I have provided.


--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 02, 2014, 05:17:16 pm
Hi Rob,

I think it would be possible to create a switched approach to this mod. If you put a switch between "pin 2" on the ASIC and ground the soundbox should operate at 72hz again. Also you would want to leave the ADB trace in place. Other speakers will work with the board without a problem. Just try to match the impedance of the existing one.  For the power supply you want to pull the load from the output side. This means 12V DC power. Probably a cool thing to do would be to find a router with the right power threshold and make a cube add-on card out of it.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 02, 2014, 11:42:47 pm
Quote from: "barcher174"Hi Rob,

I think it would be possible to create a switched approach to this mod. If you put a switch between "pin 2" on the ASIC and ground the soundbox should operate at 72hz again. Also you would want to leave the ADB trace in place. Other speakers will work with the board without a problem. Just try to match the impedance of the existing one.  For the power supply you want to pull the load from the output side. This means 12V DC power. Probably a cool thing to do would be to find a router with the right power threshold and make a cube add-on card out of it.

I think I'll try this for fun .. I found a 4 pin molex connector to 12volt dc on EBay and I have a molex power splitter
To split power off from the molex connector on the cube power supply that normally supplies the 2 internal drives , I have a lynksys wireless 54g router , that I'm going to flash upgrade to ddwrt software then set it up as an ethernetbridge ....
It fits nicely in the cube case and run an rj 45 cable from internal cube router to the 68040 motherboard , Wireless cube lol.
....
Question , can an atx power supply power 2 motherboards .... The mod you did is very cool so I'm guessing it has enough juice to power up the cube board and a dimension but it would be cool if it was moded to power up a small form factor intel motherboard or perhaps a mac mini kind of like an original stock cube with a hemi in it as well varooom a few more cooling fans a cherry on top an internal Apple TV as well .
I guess the 983 power supply has more juice so maybe there is a way to power up an internal Mac mini and original motherboard lol mad science.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on August 03, 2014, 02:09:40 am
It should be very easy to hook the video output up to a VGA to create a complete VGA adapter. Very cool.

I must say I'm surprised though because the ASIC on the non-ADB boards multiplex sound, keyboard etc. onto the 5MHz bus. I'm wondering now what versions of the OS might work with this.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on August 03, 2014, 02:30:12 am
Ahhhh. Looks like the ASIC kept the non-ADB logic in it, rather than being re-programmed for ADB (which is what I had assumed) Very cool! My understanding of the ASIC pinout is something like this:


     4 3 2 1 28 27 26
     _________________
    /                |
5  |                 | 25
6  |                 | 24
7  |                 | 23
8  |                 | 22
9  |                 | 21
10  |                 | 20
11  |                 | 19
    +--------------------------------+
    12 13 14 15 16 17 18

1 sound in data
2 sound in sync
3 reset
4 power +5V
5 ground
6 5MHz clock
7 5MHz serial in
8 5MHz serial out
9 keyboard out
10 keyboard in
11 ground
12 power +5v
13 ?
14 ? DAC data
15 ? DAC clock
16 ? DAC select
17 oscillator
18 power +5v
19 ground
20 mute
21 volume control ?
22 volume data
23 volume clock
24 ?
25 ground
26 power +5v
27 ?
28 sound clock


So based on your picture, it looks like you're wiring the keyboard back onto the ASIC, which is then multiplexing back to the computer.... which is why this works. This should be compatible with older OS's too.

With a swap of the keyboard connector, and an adapter for the video out, we can have a nice VGA solution for older mono machines. Sweet!
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 03, 2014, 03:35:49 am
Hi Gavin

Yes that is all correct. The host OS has no idea about the board revision.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gtnicol on August 03, 2014, 04:30:23 am
I guess with just a little imagination, we could also tweak the board to support ADB or non-ADB connectors. This is great news all around because the non-ADB boards are getting scarce, while ADB are plentiful.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 03, 2014, 07:58:59 am
Yes, I think between you and Rob we have more ADB sound boards than next enthusiasts at the moment. I'm thinking maybe a 3D printable enclosure that would have VGA and a switch between ADB and non-ADB would be cool. I've been working on this for a good long while so I'm really happy to finally have results.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 03, 2014, 10:52:40 pm
Quote from: "barcher174"Yes, I think between you and Rob we have more ADB sound boards than next enthusiasts at the moment. I'm thinking maybe a 3D printable enclosure that would have VGA and a switch between ADB and non-ADB would be cool. I've been working on this for a good long while so I'm really happy to finally have results.

--
Brian


Yes, the NeXT ADB soundboards I have are one in the same  ... so I'm thinking I'll be able to offer a do it your self kit as I have new old stock external soundbox shells, faceplates, logos and internal mounting bracket for speaker and new old stock ADB sound board ... and I have the non adb keyboard connectors needed to make the conversion ...

I think around $30 complete kit less speaker and microphone or 2 for $50 and ~ $6 to $10 shipping probably $30 international would be reasonable,

or if someone just wants the New ADB soundboard $15 with non adb connector for conversion .  

Once I have the soundboard conversion template and make a few locally I can factor in a nominal labor cost for a ready to go modded non adb soundbox or combo adb / non adb , if needed .

Also along with this thread link a youtube step by step demo will help the DIY crew!

And a couple buck discount for Forum members would be in order.

I personally paid $99 and $139 for  non adb soundboxes recently on ebay and flipped for cost to fill orders for customers so this is a nice pricebreak,  we can offer for everyone .

I also have the custom Y cables needed to hook up to flat panels for $65 .  I like the custom Y cable as it allows the monitor to be separated from the soundbox  but I'm positive a functional pass through will be cooland save a few dollars  .

The best part is all of the old NeXT's we can now revive ; this is fun for me!  I was going to show our attempts last year at figuring this conversion out for comedy, we successfully soldered the connectors to the boards and they powered up but we lacked the knowledge of cutting traces and soldering to the asics and Brian thank you once more !   I'm throwing in a couple NeXT goodies for your kudos prize!

Gavin do you recall having / seeing a box of original speakers or microphones for the unassembled soundboxes  in the cache I picked up from you.... I've found hidden gems at the bottoms of some boxes still a few dozen more to go through !

Best Regards Rob Blessin

:roll:
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 04, 2014, 12:55:22 am
I did a test fit inside a sound box today.

First image shows how I installed the keyboard connector upside down. I put electrical tape underneath to insulate the previous connections and then glued the connector in place.

https://www.dropbox.com/s/h8p3w46wetr68ge/IMG_0582.JPG

And here it is in a sound box:

https://www.dropbox.com/s/vv94y2s6al06ydc/IMG_0581.JPG

Here I've annotated the connections on an unmodified board:

https://www.dropbox.com/s/tchizz8d1kvoxnk/IMG_0588.JPG

A closer look at the ASIC:

Unmodified:
https://www.dropbox.com/s/eajs0jlpbdzg6bq/IMG_0585.JPG

Modified:
https://www.dropbox.com/s/zijahhjo7hvgq5u/IMG_0584.JPG

I also updated the PDF instructions here:

https://www.dropbox.com/s/g27eqfy08oq06pz/Next%20ADB%20Convertion.pdf

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 04, 2014, 02:00:02 am
Brian Ahh yes the lightbulb went on when I realized from your annotations that the blue VGA connector on the board is where the CRT in a 4000a or 4000b connects for video so .... I'm guessing this is where the pass through cable to VGA would connect to a flatpanel. If that is the case , I'm wondering is the 152 power supplies would perceive it as load and just work because the video signal is passing through the connector.
On a mono slab with monitor video passes through it  and not around it with a color slab  ycable , I know a color slab hooked to a mono monitor won't display video probably because the video signal is rgb and routed around it using the 13w3 connector.
Hunch ...We just need to match the soundboard pin outs on the on board VGA connector then reroute them to a VGA adaptor to display 2bit gray scale. I may have a doa 4000a shell and a flat panel that will fit in it. How cool would it be to use that pass through in an original NeXT monitor shell with original sound card plenty of room for rockin speakers or a wireless router and a flat panel display.... I'll check to see if the flat panel fits in the shell .  
I tried synching a view sonic 15" v150 b using a non adb soundbox and the custom cable on a monoturbo , it shows a usable 2 bit Image and is off centering OSD won't adjust . It has a small enough foot print to fit in the shell, next test is a nice sony 17" fp searching for the power connector lol.
I just had this thought for color on a slab but using the 4000a shell with frog design stand you have the sound card and speaker , mount the flatpanel 1280 by 1024 synche on green connect a 13w3 to VGA adaptor to your y cable .... That would look cool .....


Quote from: "barcher174"I did a test fit inside a sound box today.

First image shows how I installed the keyboard connector upside down. I put electrical tape underneath to insulate the previous connections and then glued the connector in place.

https://www.dropbox.com/s/h8p3w46wetr68ge/IMG_0582.JPG

And here it is in a sound box:

https://www.dropbox.com/s/vv94y2s6al06ydc/IMG_0581.JPG

Here I've annotated the connections on an unmodified board:

https://www.dropbox.com/s/tchizz8d1kvoxnk/IMG_0588.JPG

A closer look at the ASIC:

Unmodified:
https://www.dropbox.com/s/eajs0jlpbdzg6bq/IMG_0585.JPG

Modified:
https://www.dropbox.com/s/zijahhjo7hvgq5u/IMG_0584.JPG

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 07, 2014, 05:42:06 am
Hi All,

Good news. Since I have additional boards coming in the mail I decided to experiment on my personal ADB soundbox. Non-ADB and ADB can live happily together in a single sound box. No switch necessary. Just wire the signals as I've already shown and leave the ADB connection uncut. You will of course need to cut a hole in the enclosure to support a second connection, but there is plenty of room inside. Seems like we've got this one solved.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 07, 2014, 06:00:45 am
Quote from: "barcher174"Hi All,

Good news. Since I have additional boards coming in the mail I decided to experiment on my personal ADB soundbox. Non-ADB and ADB can live happily together in a single sound box. No switch necessary. Just wire the signals as I've already shown and leave the ADB connection uncut. You will of course need to cut a hole in the enclosure to support a second connection, but there is plenty of room inside. Seems like we've got this one solved.

--
Brian

Awesome that is great news as I think combo sound boxes will resolve chasing down the right model sound box , keeps the original board intact and minimizes the modding ; I'm ready to improve my solder skills  l Any recommendations on wire or type of solder. I'm guessing flipping the non adb keyboard connector and glue or Velcro  it to the top of adb keyboard connector and drilling a hole in the back of the soundbox shell should work.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 07, 2014, 06:31:35 am
30 Gauge solid core wire is what I'm using with good results. Lead solder is best (easiest). A hot glue gun is useful to anchor wires and to use for insulation. Just use the plain clear glue. I plan on using a drill on the case.

Also let me give this very stern warning:

NEVER PLUG BOTH AN ADB AND NON-ADB IN AT THE SAME TIME.
NEVER.
EVER.


--
Brian
Thanks Brian:
You know I have to ask as I'm guessing if both were plugged in fireworks develop I'm guessing chips get smoked may be electric shock . Thank you this is a good point as it would be possible for a Newby to plug in an adb mouse and non adb keyboard into a modified box . I've had them try and plug into the slab serial ports .. So I'll attach warning labels and electrical tape the unused connector.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 07, 2014, 06:55:04 am
Pictures of additional connector installed:

https://www.dropbox.com/s/67m4113mds6xksu/IMG_0599.JPG

https://www.dropbox.com/s/ovd23kj2yg3tnyz/IMG_0598.JPG
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 07, 2014, 06:59:03 am
Does anyone know what the connector type is for the blue VGA header?

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 07, 2014, 07:19:50 am
Quote from: "barcher174"Does anyone know what the connector type is for the blue VGA header?

--
Brian
. Hello Brian:
I just uploaded this today

http://www.nextcomputers.org/NeXTfiles/Docs/Hardware/NeXTServiceManualPages1-160_OCR.pdf
Section 5 covers adjusting the monitor which that sound card would sit in , I think it may be called the yoke connector , if you need me to take photos of what cable connects to the soundcard in a 4000a I can
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 07, 2014, 08:13:02 am
The 5V line is not designed to handle much current, so you could very likely fry the board. It is unlikely to cause personal injury except feelings of emotional loss.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 10, 2014, 04:16:43 am
I tried out one of these speakers today:

http://www.alliedelec.com/search/productdetail.aspx?SKU=70115875

Works perfectly with the soundbox and is also a perfect fit. Sound quality might be a little better than the original, but it's hard to say.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 11, 2014, 02:45:00 am
More good news today. I have VGA working from the soundbox. We can now scrap the Y-cable and use the original Next cable if it's available.

https://www.dropbox.com/s/2tfeuwgff8p8tif/VGA.jpg

https://www.dropbox.com/s/tchizz8d1kvoxnk/IMG_0588.JPG

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on August 11, 2014, 04:50:17 am
Quote from: "barcher174"More good news today. I have VGA working from the soundbox. We can now scrap the Y-cable and use the original Next cable if it's available.

https://www.dropbox.com/s/2tfeuwgff8p8tif/VGA.jpg

https://www.dropbox.com/s/tchizz8d1kvoxnk/IMG_0588.JPG

--
Brian


Cool that VGA connector look small enough to fit inside the box as well!

Best regards Rob Blessin
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on August 14, 2014, 12:42:56 am
For completeness I tried a cheap mic from amazon today. Works without a problem after cutting off the connector.

http://www.amazon.com/gp/product/B005DJOI8I/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Stefano on October 05, 2014, 12:54:54 am
Awesome work Brian!!!!
You simply made a way to "relive" many NeXT computers!

I've just bought a NeXTstation Turbo (mono) but it's was only the slab.
Now I've bought a non adb keyboard, non adb mouse, an ADB soundbox logic board and a monitor cable from Rob.

As soon as it arrives (I live in Brazil) I'll mod it with your instructions. Will post photos! I plan to fit the soundbox board in a small box with the non adb mini din plug and the vga plug. I'll not use the speaker neither microphone. Maybe I adapt the headphones plug with a modern 3 channel plug for a headset with microphone.

Best regards!
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on October 06, 2014, 06:18:56 am
Thanks Stefano. I'm glad to help. I had quite a bit of fun with this project. Your turbo can also use ADB peripherals with the correct ROM installed, but I personally prefer the non-adb keyboards.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Stefano on October 22, 2014, 08:17:46 pm
Received the NeXTstation Turbo (mono) from the seller and the NeXT non-adb keyboard and mouse, adb soundbox pcb and monitor cable from Rob Blossin !!

Now I need to buy a proper project case, the resistors, some thin wire and begin the modding!
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on October 30, 2014, 09:25:15 pm
Hello Brian: I just received my new solder station , it has an adjustable temperature , I'm going to practice on some scrap boards do you have temp recommendation for working on pcb like the soundcard or optical disk boards and does it differ from the NeXT motherboards for capcitors.

I noticed a resistor on the VGA  passthrough connector I overlooked and tried matching it up with a 5 band chart but my eyesight even with a magnifying glass isn't the greatest , do you happen to know what it is so I don't wind up frying something in newby soldering school LOL I want to order the right part !

I bought an www.aoyue.com 866 all in one off ebay for $199 , I'm just setting up an area and it looks very cool and well put together as I peaked inside the box.  

Thanks for your help! Best regards Rob Blessin


Quote from: "barcher174"More good news today. I have VGA working from the soundbox. We can now scrap the Y-cable and use the original Next cable if it's available.

https://www.dropbox.com/s/2tfeuwgff8p8tif/VGA.jpg

https://www.dropbox.com/s/tchizz8d1kvoxnk/IMG_0588.JPG

--
Brian
:)
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on October 31, 2014, 12:00:32 am
Hi Rob,

Temperature wise, you'll have to find the sweet spot for your iron. I also have an aoyue and find that 380 - 400C is a good range. I'm not sure how accurate the temperature gauge is on my iron. I believe I used a 250ohm resistor between the R/G/B VGA signals.  I'll try to double check this weekend. If you don't have the resistor I seem to remember having a washed out image.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Stefano on October 31, 2014, 01:59:07 am
I was thinking in creating a PCB design for the VGA and non adb conector, and the resistors. I've never used the Eagle, but I was good in making my own PCB for my hobby projects.
If I do this, I'll share it in Oshkosh...
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on November 03, 2014, 03:49:27 am
I used a 150ohm resistor across the RGB VGA signals. Another thing I'll mention is that you need to use a properly shielded cable to connect from the cube to the sound box otherwise you'll end up with distorted video. The next original cables are fine, but I've seen issues with 3rd party cables meant for Apple II's.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on November 03, 2014, 06:41:10 am
I did another one today:

Inside:

https://www.dropbox.com/s/m32ebg478nbvb8v/IMG_0088.JPG?dl=0

Outside:
https://www.dropbox.com/s/p1r24wt68qgrle4/IMG_0089.JPG?dl=0

Also updated the howto doc with VGA information:

http://www.asterontech.com/Asterontech/next_adb_conversion.html
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Stefano on November 03, 2014, 07:43:57 pm
Just to better understanding:
For the VGA connector, I must solder ONE 150 ohm resistor, one of it's terminals soldered together to the R, G and B pins of the VGA connector; other resistor terminal soldered to the monochrome signal (the RCA plug on the soundbox).
Correct ?
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on November 03, 2014, 08:20:49 pm
Yes that is correct. The RGB signals should be shorted with a single resistor.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on January 26, 2015, 03:09:47 am
It seems Belkin KVM cables make a reasonable replacement for next original cables. I modified a 25 pin cable and see no distortion on the VGA. Here is a cheap lot on ebay:

http://www.ebay.com/itm/321444570314?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Hialmar on May 12, 2015, 07:25:49 am
Hello,

Could you please re-post your explications and photos from your Dropbox barcher174 ?
All the links I tested end up in 404 errors.

Thanks a lot in advance,
Patrice

Edit: my bad everything seems ok here:
http://www.asterontech.com/Asterontech/next_adb_conversion.html

Thanks a lot :)
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Hialmar on May 12, 2015, 09:19:56 am
Sorry for the double post but I know have a real question:

Where can I find the mini-din 5a connector where the non ADB keyboard plugs in ?

The rest sounds easy to find.

Of course I could cut the non ADB keyboard connector and hook it to the soundbox board but it would be a pity :(
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gxs on May 12, 2015, 10:48:34 am
Mouser.com has a couple of options for panel mounted 5 pin Mini-DIN sockets.

In stock part numbers are -
806-KMDPLX-5S-280
161-381/5-E

Non stock items that can be ordered in small quantities are -
490-MD-50SV
490-MD-50CV
490-MD-50PL100

I could not find any 5 pin at Farnell or RS.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Hialmar on May 12, 2015, 12:22:04 pm
Thank you very much.

I'm not sure those are compatible though. The NeXT keyboard as a rectangular plastic thing in the middle of the connector.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gxs on May 12, 2015, 01:26:03 pm
3-pin to 7-pin Mini-DIN connectors have a plastic key and slot in the plug and socket respectively. Each pin count has the key/slot in a different location. This stops incorrect mating of connectors with different pin counts.

See http://en.wikipedia.org/wiki/Mini-DIN_connector for more details.

The pictures on mouser.com and on the first page of the data sheets provided by the manufacturer are usually a random representative from the range. So although you choose a 5 pin Min-DIN the illustration may be of an 8 pin connector. The data sheets should have a "technical specification" that shows dimensions, pin layouts etc. that will give accurate information for each part number in the range.

From the outlines it looks like it may be possible to alter a 6 pin socket to approximate a 5 pin socket by enlarging the slot with a small drill and blocking off the extra pin. 6 pin Mini-DIN sockets are widely available since they are used for PS/2 keyboards and mice.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on May 12, 2015, 04:07:25 pm
I like these:

http://www.digikey.com/product-search/en?vendor=0&keywords=MD-50PL100

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: gxs on May 12, 2015, 05:26:44 pm
I forgot about Digikey. I've never used them.

The part you mention looks to be the same as the last item on the Mouser list I posted - 490-MD-50PL100 by CUI Inc., though Digikey do have them in stock.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Hialmar on May 13, 2015, 06:39:18 am
Thanks a lot :)

Digikey is present in France so that's very good for me.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Hialmar on May 13, 2015, 07:16:56 pm
Just a small question:
In the modification as we output the HSync and the VSync separately on the VGA connector do we still need a LCD monitor that accepts Sync on green ?

Thanks in advance.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on May 14, 2015, 09:22:09 pm
Quote from: "Hialmar"Just a small question:
In the modification as we output the HSync and the VSync separately on the VGA connector do we still need a LCD monitor that accepts Sync on green ?

Thanks in advance.


I think as long as the monitor supports 2 bit gray scale it should work as DB19 connector to video chipset on mono or cube motherboards is just 2 bit gray scale.   1280 by 1024 resolution and synche on green would be for the NeXT Video Color systems only.

Best regards Rob Blessin
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on October 05, 2015, 05:00:52 am
I added info on creating a dummy load to my instructions:

http://asterontech.com/Asterontech/next_adb_conversion.html

It's simple enough. Just use 2, 5w 68ohm resistors in parallel, and embed them in a heat sink so they don't disturb the other components. You will need to find a smaller speaker for everything to fit. I'm using laptop speakers and it works great. Just use 8ohm, 1 watt speakers. Now the soundbox is truly universal and can be used on any black hardware.

--
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on December 13, 2015, 07:11:20 pm
Hello Everyone,

I would like to share this ADB sound card mod I've made following the instructions available on the forum thanks to the work of barcher174 (thanks to him for the kind and prompt feedback to my requests).

I've stripped down and re-capped an ADB sound card and made an adapter for both a VGA display or a Macintosh one.

Yes, surprisingly enough, my Apple Multiple Scan 17" Display can work perfectly fine even though on the paper is does not accept the fancy resolution of the NeXT. Just tried and worked fine after some little manual adjustment, so I've made a parallel output.

Tested with my NeXTstation mono, I'm planning to add a switch and an array of power resistors as dummy load for making it compatible with my Cube 030.

Stripped down and re-capped board

https://dl.dropboxusercontent.com/u/47587908/stripped%20down%20and%20recapped%20board.jpg

Final

https://dl.dropboxusercontent.com/u/47587908/final.jpg

Eizo L768

https://dl.dropboxusercontent.com/u/47587908/Eizo%20L768.jpg

Apple Multiple Scan 17

https://dl.dropboxusercontent.com/u/47587908/Apple%20Multiple%20Scan%2017.jpg[/img]
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on December 13, 2015, 09:36:16 pm
Very nice work! I like the project box you used. Where did you get it? Also I should mention that the large electrolytic capacitor is only needed if you have the internal speaker hooked up. I notice that you removed that header entirely. Not sure if you had any clearance issues with that.

Thanks,
Brian
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on December 13, 2015, 10:20:50 pm
Thanks Brian!
The box is a Takachi PF15-3-10, I got it via Farnell. I've spent some time trying to find a good match, I would have preferred something in aluminium but eventually opted for this one, since ABS is much easier to cut than Al (I don't have a dremel, I've only used a knife and sandpaper).
Actually, the trickiest part was to hack the box and the board to get everything mounted in a robust and solid way.
I must admit that the execution is not one of the finest ever, I had to make some compromises, still is fully functional and that for the moment was my sole purpose.
As for the big capacitor, I've replaced it with a more compact one, which is now mounted flat.
However, as you could see, for the moment I've removed the jack for the external speaker and used one of the empty mounting holes for securing the board to the bottom of the box with a screw (I'm using two of them).
I would like to further improve the box by having some Al front and rear panel for a more elegant mounting of the connectors, plus restoring the external audio jack and adding an "expansion" connector for the power resistors (still have no idea about how to make it, though, but I think they definitely need to be outside the box to keep inside temperature under control).
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Stefano on January 15, 2016, 04:24:39 pm
Wonderful job Paolo!

Bought the kit from Rob Blessin and I'm planning modding my ADB sound PCB this weekend... I've been postponing this for a year, hehe.

I've got a simple plastic project box, but it's ugly.
http://www.patola.com.br/index.php?route=product/product&path=59_68&product_id=89
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on January 30, 2016, 06:59:02 pm
Ciao Stefano,

thanks for your lines. I'm actually stuck with this small project, I've looked around for some Al case but they are all way more expensive than what I'm targeting at.
I guess I will try to integrate the plastic case from Takachi with some 3D printed side walls designed around the connectors in order to give them a neat and precise arrangement.
As for the power resistors for the Cube 030, I was thinking about adding this load externally, but I still have to figure out how...
If you have some ideas, they are all more than welcome!
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on April 17, 2016, 04:58:11 pm
Quick update, just to add extra confirmation (needed?) about Brian's great set of instructions.

In order to use the adapted ADB board with my 030 Cube with rev 152 power supply, I've tested the suggested dummy load (30 Ohm, draining ~400mA on the -12V line).

So, I've connected in parallel 5 spare resistors (150 Ohm, 1W max). At 12 V, they work close to the max power (0.96 W), and obviously they get pretty hot. But as long as they are free to breath (I have them hanging out of the small box) and you don't touch them, it should be fine for occasional and short runs. Not very elegant, but effective.

Tested on the Cube and on the Mono Station, works on both.

Array of resistors

https://dl.dropboxusercontent.com/u/47587908/IMG_0158.JPG

Cube + Eizo L768

https://dl.dropboxusercontent.com/u/47587908/IMG_0159.JPG
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on May 22, 2016, 08:18:07 am
Hi All,
just wanted to share about yet another legacy display which works great with black hardware (supports SOG) and also offers a very nice color match: Eizo FlexScan S1910 (black).
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on January 14, 2017, 05:30:39 am
Hello: VERY IMPORTANT TO READ BRIANS RESPONSE 😀!

We have been modifying lots of NeXT ADB Boards to be dual compatible
for both ADB and NON ADB Components but I'm having a problem with sound working from the legacy NeXT speaker on the majority of boards.
The boards have new capacitors from Charles at MacCaps.
Matt is doing the Non ADB to ADB Conversion and he does nice work with years of experience at Celestica Motherboards.
So it should be easy to trace the following problem that is cropping up and prevent or fix it for future conversions ,
we are all basically inventing the adb to non adb conversion using what we have available riding the coattails of Brian Archer our guru and it is fun,

So has anyone else had this happen where the asic chip pictured below pops after doing the conversion?

As we are finding out  that something in the configuration is smoking an ASIC Chip on some boards but not others.  

My guess is it is  being caused by the wrong resistor  or a short ?

Here are 4 examples , recommend mounting the NON ADB keyboard on right side looking in as annotated

However there is no sound on 3 of the 4 boards unless we plug in powered speakers but 3 of them may just have blown asic chips.

What are we doing something wrong?

The Microphone works  and powered external speakers even on boards with blown asic chips . Any help appreciated , he has started shrink wrapping  the wires as well as gluing them to the surface of the chips

(http://www.blackholeinc.com/images/set1/photos/Nonadbsmokedchip.jpg)
(http://www.blackholeinc.com/images/set1/photos/ADBtoNONADBsoundboxconversion.jpg)
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on January 14, 2017, 06:36:28 am
The case is conductive. You need to isolate the bottom of the circuit board. What is happening is the pins below the large cap are shorting and blowing the mono amp. It's a standard part and you should be able to find replacements. It's only a matter of time before the others blow as well. I use rubber bumpons stuck to the bottom of the board.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on January 14, 2017, 06:47:41 am
Here are replacement Mono amp ICs:

http://www.ebay.com/itm/5PCS-audio-amplifier-IC-DIP-8-TDA7052A-TDA7052A-N2-TDA7052AN-/361687879206?hash=item5436470e26:g:V5IAAOSw0UdXsZM4

Bumpons:

https://www.amazon.com/3M-SJ5302-Bumpon-Blister-Bumpons/dp/B01ACPT2LU/ref=sr_1_3?ie=UTF8&qid=1484376329&sr=8-3&keywords=bumpons

Good replacement speakers (sound fine and give plenty of clearance in the case to do whatever you want, VGA etc..):

https://www.amazon.com/gp/product/B00H8VXQ8M/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on January 14, 2017, 08:42:24 am
Quote from: "barcher174"The case is conductive. You need to isolate the bottom of the circuit board. What is happening is the pins below the large cap are shorting and blowing the mono amp. It's a standard part and you should be able to find replacements. It's only a matter of time before the others blow as well. I use rubber bumpons stuck to the bottom of the board.

Awesome that makes sense , did not realize the case was conductive , I'll pick up some bumpons asap or in the interim would electrical tape work as well?
Ordered all 3 items , kind of funny all these years and never tried powered speakers which are built into a dell flat panel with speaker bar and plugging into the NeXT sound card , they sound good.thanks again !
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: barcher174 on January 14, 2017, 09:23:32 am
Yes, electrical tape would also work.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: Rob Blessin Black Hole on January 29, 2017, 07:55:34 am
Hello Brian: To let you and everyone know we replaced the audio chips on several soundboards that had blown because of contact with the case ,
the replacement IC chip does work but the volume is really low hardley audible compared to the original NeXT IC's when run through and original NeXT speaker ,
however powered speakers work great as they not dependent on the mono amp IC. I have not tried the after market microphone and
really small speakers yet but please note they have tiny lead wires
and we will have to buy connectors with leads rather than solder them to the internal speaker connector ,
the advantage will be more room for the VGA passthrough and load boards etc , still it is all really cool and I'll keep you posted.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on January 29, 2017, 10:09:10 am
Dear All,
for those who may be interested, here please find my latest (and last) take on "ADB to non ADB soundboard conversion".
The box is perfectly sized and, since it's all aluminium, it also doubles as heat sink for the power resistor (the red switch cuts it off in case it's not needed).
The second 15 pin connector can be used with Apple legacy monitors (for the moment not wired for avoiding too much cluttering).
The speaker is very small but does a decent job.
Looks a little bit like a spaghetti board, but I preferred to keep it as modular and reversible as possible.
Finally, as Brian suggests, video / hsync and vsync should run over shielded cables to keep video output quality at a decent level.

(https://dl.dropboxusercontent.com/u/47587908/Photo1.jpg)
(https://dl.dropboxusercontent.com/u/47587908/Photo2.jpg)
(https://dl.dropboxusercontent.com/u/47587908/Photo3.jpg)
(https://dl.dropboxusercontent.com/u/47587908/Photo4.jpg)
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: SlateBlue on April 11, 2017, 08:53:43 pm
Quote from: "paolo.bertolo"Dear All,
for those who may be interested, here please find my latest (and last) take on "ADB to non ADB soundboard conversion".
The box is perfectly sized and, since it's all aluminium, it also doubles as heat sink for the power resistor (the red switch cuts it off in case it's not needed).
The second 15 pin connector can be used with Apple legacy monitors (for the moment not wired for avoiding too much cluttering).
The speaker is very small but does a decent job.
Looks a little bit like a spaghetti board, but I preferred to keep it as modular and reversible as possible.
Finally, as Brian suggests, video / hsync and vsync should run over shielded cables to keep video output quality at a decent level.

(https://dl.dropboxusercontent.com/u/47587908/Photo1.jpg)
(https://dl.dropboxusercontent.com/u/47587908/Photo2.jpg)
(https://dl.dropboxusercontent.com/u/47587908/Photo3.jpg)
(https://dl.dropboxusercontent.com/u/47587908/Photo4.jpg)

Your image links are broken.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on April 13, 2017, 06:47:58 pm
Something has changed with dropbox, pics are not loaded automatically.

Here I try again...

https://www.dropbox.com/s/0n2jrprnjfhy60z/IMG_2569-1.JPG?dl=0
https://www.dropbox.com/s/hcbl9bvj68zi91p/IMG_2570.JPG?dl=0
https://www.dropbox.com/s/bv89t11qruwrhjc/IMG_2286.JPG?dl=0
https://www.dropbox.com/s/g67hdvm0jx73n1s/IMG_2287.JPG?dl=0
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: nextchef on April 13, 2017, 07:56:11 pm
Dropbox got rid of the "public" folder that you were probably using to host the images recently.
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: paolo.bertolo on April 13, 2017, 08:59:43 pm
Quote from: "next chef"Dropbox got rid of the "public" folder that you were probably using to host the images recently.


Yes, it's like that. Don't know if the new links are now active, but they should be. Any advice concerning the most efficient way to post pictures on this forum?
Title: NeXT ADB soundboard to NON ADB conversion?
Post by: SlateBlue on April 13, 2017, 10:37:04 pm
The new links work, but the images themselves are not loaded in the thread. I have to click each link, which is fine. I upload photos to my Imgur and use the img tag to embed images within my posts. The drawback to this is that images don't work if links are broken. The advantage is that it saves storage space on this server.