This pleasingly purple PCB is great for those looking to control mains voltage systems drawing up to 10 amps. On board are 2 relays that can be brought under the control of an Arduino Nano, or its more powerful processor sibling, the Arduino Nano Every.
The footprint for the Nano or Nano Every is left unpopulated as that gives the user the most options. The traditional Arduino Nano will need to mount via header pins; however the Arduino Nano Every has header pins and castellated pads, so it could be soldered flush onto the board for a very secure mount.
There are both terminal blocks as well as a barrel jack connector for the power supply on the DC side of the board. It can regulate up to 35V at the power input making this board great to slot into your 12V or 24V projects. As well as the two relay channels, every IO pin of either flavour of Nano is broken out to a header, and there are extra headers for 3.3V, ground and a collection of pins designed to make it easier to add further relay channels.
Finally, there are some rugged M4 mount holes for the board and, apart from the Nano, everything is fully assembled to get your project up and running as fast as possible!
Credit : Source Post
