electronic pest repellent schematic

Electronic Mice Repellent Circuit

P. Marian - 04/17/08

This electronic mice repellent emit high frequency sound waves to create an acoustically hostile environment that effectively repels [...]
electronic door lock circuit

The Simplest Electronic Door Code Lock Circuit

P. Marian - 04/17/08

This is the simplest electronic door lock that has a remarkable code implementation because it uses only one [...]

Ultrasonic Dog Repeller Circuit

P. Marian - 04/14/08

This ultrasonic dog repeller circuit will chase away angry dogs. It is build with the all known 555 [...]
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