Detect Migrating Birds With a Plastic Dish and a Cheap Microphone
Cars That Think
JULY 4, 2024
A microphone attached at the focal point of the dish is connected to a preamplifier [middle left], which in turns feeds an external sound card [middle right], which connects to a host computer via USB. To power the preamp, I used a 7-ampere-hour, 12-volt gel-cell battery, which is overkill.
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