Using an Arduino or Raspberry Pi to perform a task in the real world is certainly a project we’ve seen here before, and certainly most of these projects help to make up the nebulous “Internet of ...

This automatic door opener can be made using readily available components. The electromagnetic relay at the output of this gadget can be used to control the DC/AC door-opener motor/solenoid of an ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Megan Wollerton We’ve added information about Chamberlain’s plans to block ...