inspired by https://learn.adafruit.com/trinket-audio-player/sound-playback I want to explore the possibilty of having an I2C based tone generator. Basically like the SID in a C64 but controlled via I2C. Since I have no hardware with me on my vacation, I am only able to design some PCBs.
This project has a grove I2C plug to easily connect to my #LAMEBOY - another ESP12 handheld
I want to send some IR things, so why not make a board that has IR connected and can be controlled over I2C. https://z3t0.github.io/Arduino-IRremote/
Also to test my Game Boy Pocket button+silicone pad recycling idea, I've created a tiny controller board + case. See here for more details: https://hackaday.io/project/26823-lameboy-another-esp12-handheld/log/69994-external-gamepad
BlinkM is also cool, at least they were cool before WS2812Bs were cool. RGB LEDs controlled over I2C, I already use a BlinkM clone called Ghetto Pixel on Lameboy. Google for cyz_rgb to get the firmware ;)