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💬 MySensors equiped Clock Radio

openhardware.io 6 Apr 2017, 20:55 last edited by openhardware.io 6 Apr 2017, 20:55

https://www.openhardware.io/view/369/MySensors-equiped-Clock-Radio
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hek Admin 6 Apr 2017, 21:05 last edited by

Love the big red button!
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To provide a large enough pulse to drive the ceramic transducer , you need a lot of energy, so they pump up the 5v with an inductor/transformer to provide a high voltage pulse. This is 60v or more… The more Energy you produce the farther the pulse will travel…. Everything thing else on the board run at 3.3 to 5V. Add a large Capacitor of 100 µF are so between the 5v and ground on the device, this may clean up your problem.. Some CPU modules just can’t supply enough current quick enough that’s needed when the pulse is triggered. These are very inexpensive device, we’re luck to see them work at 1/2 the spec range.
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thanks for you reply Fumée Bleue.
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id also second the use of 18650s
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Is this design for some existing enclosure?

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