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 ...

Anyone creating autonomous systems using the Raspberry Pi range of mini PCs might be interested in the new Multi-iO HAT specifically designed for Raspberry Pi automation. Compatible with all Raspberry ...