Programming ATtiny85 Keyboard with Arduino UNO ISP

Projects General Guidance
1

I'm trying to program an ATtiny85 chip with an arduino uno to make it function as a 3 button keyboard for my computer (hoping to make it functional on both Mac and PC). I am using the DigiKeyboard.h library and I am following these instructions (GitHub - duckythescientist/BinaryKeyboard: 1 and 0 are the only keys a true programmer needs) but I can't tell whether or not my code actually uploaded properly or not because the buttons won't do anything when I plug it into my computer. In order to understand what is going on, I would first like to get it to simply print 1s and 0s when the keys are pressed like a normal keyboard, but I'm not quite sure how the button press translates to typing in the code that is provided in github? Help please? I'm not all that experienced with this stuff. Thanks!

(Have set up for windows mode upon plug in and have played around with alt-x and alt-+ for windows unicode compatibility but still nothing)

2

Try programming your tiny85 for something simple and obvious that you can tell right away if it works. Like Blink. That will let you know that your Uno as programmer is working (or not!)

Then, once assured you can iron all the bugs out of your keyboard sketch.

3

So I managed to get Blink to work on the chip, but I'm still having trouble getting it print anything. My computer says 'Device not recognized' when I plug in the chip. Is there a specific way I need to format the chip in order for my computer to recognize it as a keyboard?

4

If you want your computer to use the chip as a keyboard, use a 32u4, not a Tiny85.

Check out the dfrobot beetle. It's about the same size as a digispark, but uses the 32u4 chip.

5

Ah! This chip looks very well suited for what I'm trying to do. Thanks for the suggestion!