Bat Detector - Reconstructed
One of our Belfry bat detectors stopped working, so we took it apart and reassembled it using a bread board.
A bat detector is a surprisingly simple circuit:
* Ultrasonic Microphone - Picks up bat vocalizations.
* Amplifier Chips - Makes signal louder.
* Frequency Divider - Lowers frequency to human audible range.
* Speaker - Outputs signal, for all to enjoy.
There are also some capacitors to power the chips and the speaker, an LED that flashes with the bat pulses, and a 9V battery.
Not as weather proof as it used to be, but it works again.
Bat Detector - Reconstructed
One of our Belfry bat detectors stopped working, so we took it apart and reassembled it using a bread board.
A bat detector is a surprisingly simple circuit:
* Ultrasonic Microphone - Picks up bat vocalizations.
* Amplifier Chips - Makes signal louder.
* Frequency Divider - Lowers frequency to human audible range.
* Speaker - Outputs signal, for all to enjoy.
There are also some capacitors to power the chips and the speaker, an LED that flashes with the bat pulses, and a 9V battery.
Not as weather proof as it used to be, but it works again.