An IR transmitter/receiver pair are positioned on either side of the fan. When the blade passes in between then, the receiver shuts off a transistor connected to one of the Arduino’s external ...

They turned to an Arduino along with some beefy ... can wirelessly charge the batteries using a Qi transmitter that lines up with the associated receiver when in the home position.

Showing his journey in building a DSM2 RC transmitter using the Arduino platform and hardware ... but it worked best with one long range version as the receiver, and a standard module for ...