The integrated circuit used in this detector is uncommon today. We found it in a documentation from the 70s. Detection is done by an optical camera with LEDs and a photo sensor.
Found in a Popular Electronics from the 90s, this game can be seen in other configurations on this site. The...
This single-channel remote control transmitter operating in the FM range uses common components and...
Although it is a common configuration today, this circuit was taken from an old publication. The...