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Use a USB keyboard and mouse with a non-ADB NeXT

 
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drakar



Joined: 23 Sep 2016
Posts: 17

PostPosted: Mon Feb 12, 2018 9:54 am    Post subject: Use a USB keyboard and mouse with a non-ADB NeXT Reply with quote

Now you can use a USB keyboard and mouse on your non-ADB NeXT!

There's only 100mA of power available from the NeXT so you need USB peripherals that don't use much. Standard keyboards only use around 10-20mA. Ones with tons of LEDs or complex macro functionality use more.

Optical mice can use quite a bit (~65mA or more), but I've had good luck with wireless ones as the receiver uses a tiny amount of power. My old Logitech wireless mouse works great. Mouse movement is very different between the two protocols so it doesn't feel exactly the same, but it's close.

Right now it supports standard, separate keyboards and mice. Hubs or composite (2-in-1) devices won't work. Future firmware (upgraded via thumb drive) could support them.

A 5-pin cable connects it to the soundbox or monitor - you can modify a 6-pin PS/2 cable or I have them available pre-made.


Available now at https://drakware.com

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Rob Blessin Black Hole
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Joined: 05 Sep 2006
Posts: 681
Location: Ft. Collins, Colorado

PostPosted: Mon Feb 12, 2018 12:08 pm    Post subject: Reply with quote

Hello Drak: Cool Stuff , I placed an order. best regards Rob Blessin
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barcher174



Joined: 07 Dec 2012
Posts: 603

PostPosted: Mon Feb 12, 2018 5:06 pm    Post subject: Reply with quote

Here's a thought. Maybe you could put a micrUSB power connector on the device so people could use a USB hub to get around the power limitations?
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drakar



Joined: 23 Sep 2016
Posts: 17

PostPosted: Mon Feb 12, 2018 6:03 pm    Post subject: Reply with quote

I didn't think of that, I could add it for version 2. For this one I was just focused on one connection from the NeXT with no external pieces to worry about.
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barcher174



Joined: 07 Dec 2012
Posts: 603

PostPosted: Mon Feb 12, 2018 6:42 pm    Post subject: Reply with quote

I forgot to say it before, but excellent work! I could see this being really useful for KVM setups.
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barcher174



Joined: 07 Dec 2012
Posts: 603

PostPosted: Tue Feb 13, 2018 1:29 am    Post subject: Reply with quote

Another thought I had. With an external power source could you also set the Next power button to be a key or key combination instead of a physical button?
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drakar



Joined: 23 Sep 2016
Posts: 17

PostPosted: Tue Feb 13, 2018 6:46 am    Post subject: Reply with quote

Yep, if the USB part was powered up you could watch for a key and then signal the system to turn on.
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Rob Blessin Black Hole
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Joined: 05 Sep 2006
Posts: 681
Location: Ft. Collins, Colorado

PostPosted: Tue Feb 13, 2018 12:11 pm    Post subject: Reply with quote

Hello Drak and Brian: Would it be possible in V2 to have the additional power supplied by a bios / watch battery as less cords to plug in? Best regards Rob
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Rob Blessin President computerpowwow ebay sales@blackholeinc.com http://www.blackholeinc.com
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drakar



Joined: 23 Sep 2016
Posts: 17

PostPosted: Wed Feb 14, 2018 9:03 am    Post subject: Reply with quote

A battery might work but it would have to be bigger than a coin cell to keep everything running for any amount of time. I'd like to keep the cables to a minimum too.

All good feedback though! I'll see what I can come up with.
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Rob Blessin Black Hole
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Joined: 05 Sep 2006
Posts: 681
Location: Ft. Collins, Colorado

PostPosted: Wed Feb 14, 2018 12:18 pm    Post subject: Reply with quote

9V Smile
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