Raspberry Pi Relay HATs are two a penny, but few come with a dedicated mobile app. Meet the PiRelay, a HAT that can manage up to 240 VAC/7 A or 125 VDC/10 A loads across four relays. The PiRelay costs ...

Raspberry Pi enthusiasts building projects incorporating relays may be interested in a new piece of hardware created by Sequent Microsystems, offering up to 32 relays in a single project. This ...

Ditronix has announced a multi-phase power and energy monitoring board in the form of a ‘Hat’ for Raspberry Pis. Called ‘IPEM PiHat’, it is based on Microchip’s M90E36A monitoring and power ...

One of the things that makes Raspberry Pi’s small and inexpensive single-board computers interesting is the 40-pin connectors that makes it possible to connect expansion boards called HATs (which ...

The Strawberry4Pi 2 is an IoT HAT designed for the Raspberry Pi with a difference. The HAT costs just US$29 but comes pre-installed with its own OS and a mobile app that can control your internet ...

Recently, [Edward Schmitz] wrote in to let us know about his Hackaday.io project: SigCore UC: An Open-Source Universal I/O Controller With Relays, Analog I/O, and Modbus for the Raspberry Pi. In the ...