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.

Developers, makers and hobbyists that enjoy building projects using the Raspberry Pi mini PC may be interested in a new I/O Raspberry Pi hat that has been created by Doug Gilliland. The Ultimate I/O ...