Electronic Project Kits (79 items)

This powerful ultrasonic generator is ideal for deterring rats, mice, wild rabbits, birds, etc. When connected to a suitable piezo speaker, the module produces an ultrasonic tone with a constantly ...

This module monitors the charge status of a 12V lead-acid car battery and recharges it automatically when the voltage falls. When the battery is full, the module shuts off the charging process and ...

Switches on other devices with the built-in relay contact after pushing the button and automatically switches them off again after a set time. The time can be stopped any point by pressing the seco...

This electronic light-operated switch automatically turns on lights or other appliances when darkness falls and switches them off again at daybreak. The module can also work in reverse, i.e., on at...

This module consists of an LED soldered to a constant current circuit. It can be connected to any voltage between 4 and 30V DC. The LED shines with almost constant brightness regardless of voltage ...

Avoid the nuisance and damaging effects of a discharged car battery with the Kemo M148A battery guard module. The module cuts power to accessories if the battery voltage drops below the set minimum...

This solar charging controller module can be connected between a 12V DC solar cell (open circuit voltage 14 to 30V DC) and a 12V DC battery to prevent overcharging of the battery.

Rain Sensor 12 V/DC If the sensor plate gets into contact with rain or slushy snow / hail, it switches on a relay. Sun blinds may be retracted with that, skylights may be closed or a simple rain al...

If the 2 sensor connections of the module come into contact with water, the built-in relay switches on. Sirens, other cutoff relays, etc. may be triggered with that.

The Kemo M168 Car Voltage Spike Protector permanently suppresses all voltage spikes in the on-board power, protecting sensitive on-board electrics against damage during jump starting or battery cha...

The Kemo P5123 Miniature Piezo Tweeter Speaker has an aluminium spherical cap for especially low distortion and constant high pitch radiation. It is highly suitable for ultrasonic vermin scarers du...

A handy selection of 50 electrolytic capacitors.

This low-cost project uses an 8-pin microcontroller to allow a customisable alarm to be created.

This low-cost project uses an 8-pin microcontroller to create a random output electronic dice display with LED spots. The kit includes extensive project notes that go from an introduction to the co...

Empty PCBs for the 555 Project Kit (Rapid part 70-0225).