Testing

Raspberry Pi with Relay I/O Board

Relay I/O Board is widely used in applications of smart home project. In this article, I will detail how to control the Relay I/O board using Raspberry Pi with Raspberry Pi Universal Expansion Board via internet. The codes and schematic diagrams used in this article was listed at the end of this article. Part I: Hardware 1. …

Raspberry Pi with Relay I/O Board Read More