Animal repellent schematics

Build your own ultrasonic mosquito repellent and reclaim your summer evenings! This simple circuit, using just a $4047 IC and a piezo tweeter, offers a powerful, cost-effective solution to banish mosquitoes.... [read more]

Design a powerful ultrasonic sound generator to train your dog and create a quieter home. This innovative circuit, utilizing a 555 timer and a miniature piezo beeper, targets frequencies between 11 and 22 kHz – ideal for canine training and deterring unwanted barking. Unlock your dog’s potential and build a sophisticated anti-bark device today.... [read more]

Build a captivating automated deterrent system to shield your outdoor spaces from nocturnal wildlife with this innovative circuit. This 6V lamp, featuring a 3W light source, activates automatically at dusk and deactivates after a precise 60-minute cycle, providing effective protection while maximizing energy efficiency.... [read more]

Build your own 22KHz insect repellent circuit using a CMOS 4047 phase-locked loop to safeguard your garden from unwanted pests. This innovative design, developed by Graham Maynard, leverages a 3.25 inch Motorola Piezo and 120mA power supply for effective pest deterrence.... [read more]