Micro FM Transmitter

This circuit is commonly credited to Japanese multimedia artist Tetsuo Kogawa. It takes audio input through a 1/4″ phono jack and, constructed as shown, without the optional antenna connections, will broadcast an FM radio signal about 30 feet. This is the standard model of Mr. Kogawa’s simplest FM transmitter, which... Read more »

My Robot, Makey

Makey is an autonomous robot programmed to follow objects around and avoid obstacles. It has a fully enclosed chassis and uses tank steering. Read more »