The Whistled - A Sound Controlled Relay

It’s interesting to hack one of your appliances or lighting projects into a whistle controlled intelligent one. The whistled allows you to do so by simply whistling two musical notes. To set it up, you just need to connect your 5.5/2.1mm DC connector on one end and your load on the other. To grab a sense of how it actually works, check out the presentation video below: Specifications ESD protected PCB, covered in transparent heat shrinkable tubing Voltage must be between 4.5 and 18V at the input (barrel connector) Reversed polarity protection Max current of 5A 16 bits PWM output SWD pads for programming Listening range of 15m / 50feet Cortex M4 microcontroller performing 80 FFTs / sec Maximum voltage on the screw terminals is 25 Volts (don't forget the flyback diode!) ResourcesProduct Page