Kinetic Energy Used for Wireless Doorbells

Posted on April 1, 2016 John Smith Kinetic Energy Used for Wireless Doorbells

Cherry Electrical Products has helped design a “hackable” programmable, battery-free wireless doorbell, using its specialized energy harvesting switch. The doorbell can operate wirelessly and without any battery or external power supply. Cherry Electrical Products was founded in 1953 and has been specializing in micro switches, sensors, electrical controls and touch controls.

There have been wireless doorbells for quite a while, but Cherry has brought a new product to market that allows this “hackable” conversion of kinetic energy into voltage. This is used to power a RF Transmitter that sends signals to the receiver module, which causes the doorbell to chime.

The chime unit consists of several key components, a Cherry switch receiver module, “Cuttlefish” board, Voltage regulator and LEDs, Amplifier board, and loudspeaker. These units “can be powered with 7Vdc-24 Vdc and includes a switched relay output”. The chime unit is played through a 4-bit DAC that consists of 4 digital outputs. These outputs are then transferred to the amplifier board.

This project was done by a community-operated forum that was created for people with an interest in electronics, computers, open source, amateur radio, sciences, technology, and digital art. This online community is called Bridge Rectifier.

The idea of a wireless came to fruition by Bridge Rectifier was due to having a noisy hackerspace. They were unable to hear people at the door and decided to one up the every household item. Cherry Electrical Products provided the main source; the energy harvesting evaluation kit. From there they put their knowledge and skills together to develop this great solution for wireless and battery free doorbell.

ASAP Semiconductor is a leading provider in electronic parts. We are a verified Cherry parts distributor and can provide you will all of your Cherry part needs. Contact us at 714-705-4780 or check out our website at :

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