Bought this at a thrift store yesterday. Don't have a clue what it is. Took it outside to get some photos of it and it starts making noise. No plugs or jacks on the outside and what looks like a photoelectric cell on the front. Obviously homemade. Any clues will be appreciated. Thanks.
Monte
I would guess a bird caller or ultrasonic mosquito repeller.
Duno, it sounds chirpy. :-)
Seem to remember from a few years ago now, in some of the "101 Easy Electronic Projects" flavoured magazines, a project that used a photovoltaic cell (photo resistor??) to trigger an audio synth chip; the rate at which it chirped depended on how much light was shining on it (or something like that).
Solar powered cherper.
Sounds like a solar powered noisemaker intended to emulate a bird. Probably for scaring rodents or other animals away from a garden or similar place.
Just guessing.
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