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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
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ESD protected PCB, covered in transparent heat shrinkable tubing
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Voltage must be between 4.5 and 18V at the input (barrel connector)
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Reversed polarity protection
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Max current of 5A
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16 bits PWM output
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SWD pads for programming
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Listening range of 15m / 50feet
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Cortex M4 microcontroller performing 80 FFTs / sec
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Maximum voltage on the screw terminals is 25 Volts (don't forget the flyback diode!)
Resources
