WS281X: 3 Pin Led strips - D0, GND, +5 VCC Make Sure to give common Ground between RPI and the strip, regardless you are using an external power supply or not.

Raspberry Pi Trading released a new version of Raspberry Pi OS last week with the highlight being the Picamera2 Python library for Raspberry Pi cameras, along with small changes such as the ability to ...

Raspberry Pi 4とモータードライブ基板を使ってステッピングモーターをPythonで操作する一連の手順をまとめます。 モータードライバ基板 ステッピングモーターはRaspberry Piから特殊な波形（PWM：パルス幅変調 Pluse Width Modulation）を受信する事により駆動します。

More often than not, an IoT master device uses the SPI (serial peripheral interface) and I 2 C (inter-integrated circuit) protocols to exchange data with EEPROMs or sensors that are operating in slave ...

While the Raspberry Pi has very good support for an I2C bus, a lot of very cool chips – including the in system programmer for just about every ATtiny and ATmega microcontroller – use an SPI bus.