i2c keyboard
Posted: Tue Jul 09, 2019 11:19 pm
Hi all! I'm looking for any thoughts/feedback on this idea. I've got a proof of concept i2c keyboard pcb working that uses the tca8418. I mainly made it for use in microcontroller based projects but it works well with raspberry pis.
Here it is plugged into the i2c breakout jack on a HyperPixel 4 display (no soldering used).
![Image](https://cdn.hackaday.io/images/8376871561435265646.jpg)
![Image](https://cdn.hackaday.io/images/3043531561435290195.jpg)
A closeup of the key layout:
![Image](https://cdn.hackaday.io/images/3085871561168102103.jpg)
I've got a couple project logs here with more info:
More details on the PCB: https://hackaday.io/project/162281-teen ... king-on-v2
Using it on the HyperPixel 4 display with a raspberry pi zero: https://hackaday.io/project/162281-teen ... connection
This is sort-of a successor to the Teensy Thumb Keyboard PCB (see also: github repo, Example RasPi3b+ build). That used a Teensy 3.2 or LC and all through hole parts.
Here it is plugged into the i2c breakout jack on a HyperPixel 4 display (no soldering used).
![Image](https://cdn.hackaday.io/images/8376871561435265646.jpg)
![Image](https://cdn.hackaday.io/images/3043531561435290195.jpg)
A closeup of the key layout:
![Image](https://cdn.hackaday.io/images/3085871561168102103.jpg)
I've got a couple project logs here with more info:
More details on the PCB: https://hackaday.io/project/162281-teen ... king-on-v2
Using it on the HyperPixel 4 display with a raspberry pi zero: https://hackaday.io/project/162281-teen ... connection
This is sort-of a successor to the Teensy Thumb Keyboard PCB (see also: github repo, Example RasPi3b+ build). That used a Teensy 3.2 or LC and all through hole parts.