https://www.instructables.com/Use-a-1-ATTiny-to-drive-addressable-RGB-LEDs/
Use a $1 ATTiny to Drive Addressable RGB LEDs: Arduinos are wonderful and easy to work with, but there are some projects where you need a microcontroller, or...
useattinydriveaddressablergb
https://hackaday.com/2011/09/23/attiny-hacks-infrared-guidance-and-navigation/
After [trandi] got his hands on a cheap R/C helicopter he realized the difficulties in actually flying a remote control helicopter. Instead of giving up, he...
infrared guidanceattinyhacksnavigationhackaday