Product Description This circuit generates a frequency 10-30 KHz that creates a sonic zone disturbing to mosquitoes. A piezo board creates the frequency equal to the frequency generated by the mosquito...
Product Description Gives alarm sound when water is detected. Incorporated alarm buzzer. Water sensor can be placed at a distance by cutting the board and using wires to connect the...
Product Description Make your voice sound like a robot with this cool voice changer solder kit. Add vibrato effect, or use the pitch buttons to make your voice sound lower...
Product Description Universal Mono DIY Preamplifier Kit Boost audio signal to your amplifier with the Velleman K1803: Universal Mono Preamplifer Kit. This kit requires an intermediate level of soldering experience,...
Product Description Velleman general purpose low-cost thermostat mini kit with ntc temperature sensor. Output Relay with LED indicator. Temperature range: +5 to +30 degree Celsius, Relay power rating: 24Vdc/AC 3A....
Product Description Four high-intensity LEDs light up and react simultaneously to every sound. For different funny and practical applications e.g. sound indicator, simple sound-to-light unit for music. The unit can...
