The purpose of this circuit is to indicate which of the two cars crosses the finish line first on a slot car lane. The circuit is from an 80's Popular Electronics.
This circuit, which can be used as a shield, was found in a 1980s documentation. The circuit can be...
We found this circuit in an English publication of 1976. It can be easily assembled by changing the...
This switch is triggered by the touch of the sensors, which can be two metal plates. These plates...