[msarnoff]

I used Charlieplexing to drive four LEDs, four buttons, and a beeper from a 6-pin PIC10F200 with only four GPIOs. (and one is input-only!) It was a lot of fun working out the correct TRIS/GPIO combinations. (and fitting the whole thing into 256 instructions and 16 bytes of RAM was fun too)

https://github.com/74hc595/TinySimon

[seabird]

Have you seen any industry applications of that part? I'm seeing 51 cents/piece at 3k on DigiKey, which is pretty wild when more fully featured OTP parts are available for less than ten cents.

[tdeck]

The PIC10F200 has been around for a very long time. It used to be much cheaper relative to competitors but now there are many cheaper options.

[MadnessASAP]

I love it, that's a great little build!

[TheJoeMan]

Thanks for sharing! Now my wife wants one. I think adding a keychain hole would be cool!