Before the Raspberry Pi came out, one cheap and easy way to get GPIO on a computer with a real operating system was to ...

Framed Washington Metro map uses Raspberry Pi Pico W and WMATA departure API to light 144 LEDs live. Laser-cut matboard masks 144 LEDs; data refreshes so you can see every train's position from home.

Pin configuration by user is available. See Configuration section. Wire length between Pico and SD card is very sensitive. Short wiring as possible is desired ...

This small application can turn your Raspberry Pi into a Matter lighting device. Once setup and commissioned, it allows control of a configured GPIO pin via Matter on/off commands. The GPIO output can ...

Most of us first hear about the irrational number π (pi)—rounded off as 3.14, with an infinite number of decimal digits—in school, where we learn about its use in the context of a circle. More ...