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.

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 ...

The Raspberry Pi single-board computer and all its variants have captured the imaginations of DIY enthusiasts and budding hobbyists alike. With the latest model, the Raspberry Pi 5, the mini-PC is ...