This circuit periodically reverses the rotation of a motor to change the position of eggs in an incubator. The circuit is from Electronics Now magazine, May 1995.
This TTL dice was found in an old American 1980s documentation, but can still be easily assembled....
This circuit for several frequencies was obtained in an American documentation from the 90s. The...
November 2016 - Vishay's new proximity sensors VCNL4100 for display presence and activation,...