Author Topic: Open source hardware usb keyboard receiver interface board or chip  (Read 1685 times)

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Offline azAmps

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Long time reader 1st time poster.

I work with servers and I have a need for a custom keyboard. It would have about 100 buttons (keys), each would send an ascii string to the server. I need it to be wireless because I need to close the cabinet.
Im looking for a wireless usb dongle receiver. It needs to id itself as a keyboard on boot. I think Im just not searching for the correct terms. Can anyone point me in the right direction, does something like this exist?

Yes I know there are certain keyboards with macros etc, that I could program these string into.  and some other software based solutions. This is for a high security data center application and most of those devices are not allowed.
 

Offline nidlaX

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Re: Open source hardware usb keyboard receiver interface board or chip
« Reply #1 on: February 24, 2018, 09:31:04 pm »
There have been many many implementations, but this is the one I remember by name: https://github.com/tmk/tmk_keyboard

Note: If you need specific examples of a wireless implementation, there are projects that add Bluetooth to the TMK base controller. You can probably also roll your own protocol using some Nordic transceivers.
« Last Edit: February 24, 2018, 09:33:49 pm by nidlaX »
 

Offline donotdespisethesnake

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Re: Open source hardware usb keyboard receiver interface board or chip
« Reply #2 on: February 25, 2018, 08:26:16 pm »
Yes I know there are certain keyboards with macros etc, that I could program these string into.  and some other software based solutions. This is for a high security data center application and most of those devices are not allowed.

If your usb dongle identifies as a keyboard, then anyone can send keyboard data to it, bypassing security. You need to rethink your solution.
Bob
"All you said is just a bunch of opinions."
 

Online ogden

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Re: Open source hardware usb keyboard receiver interface board or chip
« Reply #3 on: February 25, 2018, 10:35:13 pm »
If your usb dongle identifies as a keyboard, then anyone can send keyboard data to it, bypassing security. You need to rethink your solution.

It's obvious - anybody who plugs USB keyboard into PC or server, can send keyboard data to it. He do not need to rethink solution. He need wireless keyboard with secure wireless connection. USB can stay as it is.

[edit] In case physical security of keyboards needed, then there are solutions as well:

http://www.belkin.com/us/Products/business/c/cybersecurity-secure-kvm/
« Last Edit: February 25, 2018, 11:10:59 pm by ogden »
 

Online ogden

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Re: Open source hardware usb keyboard receiver interface board or chip
« Reply #4 on: February 25, 2018, 10:41:37 pm »
Yes I know there are certain keyboards with macros etc, that I could program these string into.  and some other software based solutions. This is for a high security data center application and most of those devices are not allowed.

What about those?

https://www.microsoft.com/accessories/en-us/aes-encryption
 

Offline spaz

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Re: Open source hardware usb keyboard receiver interface board or chip
« Reply #5 on: March 05, 2018, 09:36:40 pm »
disregarding high security and wireless key stroke injection conundrum.

another open hw open fw keyboard designs are the ones from input club.
https://github.com/kiibohd/pcb
https://github.com/kiibohd/controller
the controller fw has some support for Nordic semi's bt ?cs.

some options to start you off:
- HHKB Pro2 with Hasu BT Controller upgrade, which makes it programmable bluetooth keyboard. simple mod : but not cheap.

- Anne Pro, BT has macros (but a bit ?), also cheaper. <http://www.obins.net/>

- Or if you just want to build a simple bluetooth hid thingy<https://www.adafruit.com/product/1535> is a quick start.


 

Online SiliconWizard

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Re: Open source hardware usb keyboard receiver interface board or chip
« Reply #6 on: April 02, 2018, 05:43:09 am »
Yeah - for security reasons, I would not implement that as a standard keyboard, but as a completely custom controller with encryption.

 


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