Optiboot (an older version) is installed by default on the Arduino Uno and (as of 2018) official Arduino Nano boards. It can be installed on all older mega8, 168 or 328 based Arduinos. As of 2019, ...
A large, WiFi-connected seven-segment clock built from addressable LED strips, driven by an ESP32. Each digit is drawn on a NeoPixel (WS2812) strip, the time is synchronised over the internet, and the ...