How about making a small FM transmitter? Originally designed by ... islands of the same PCB glued on top to form nodes for the circuit to connect to. Besides being an extremely easy way to make ...

The FM transmitter circuit itself is based off one of [Art Swan]’s builds, but instead of the solderless breadboard construction you would expect to find in a small demo circuit, [Angelo] went ...

The role of a transmitter in a basic control circuit. Image credit: Maxim Integrated Sensor transmitters are primarily used to produce an output with a higher transmission range than the sensor itself ...