Want an easy soldering project and detailed project and firmware notes so you know what you're building? Try the TV-B-Gone! https://www.tvbgone.com/shop/tv-b-gone-kit-universal-build-tv-b-gone-kit/

Adafruit posted design notes for the kit and there are interesting tidbits on reverse engineering an IR signal, compressing the IR codes to fit nicely into an ATTINY microcontroller, and preserving LED lifespan by not driving them so hard: https://learn.adafruit.com/tv-b-gone-kit/design-notes

I kind of want one with a mute feature too. #electronics #selfcare