Electronic Canary. Makes a nice Bird Chirping sound every once in a while

Electronic Canary - Makes a nice Bird Chirping sound every once in a while HOME
Reverse engineered circuit diagram of a commercial Electronic Bird. This one was built into a plastic christmas ornament and runs off a 9V battery. Note that L1 is actually just an audio transformer with an unused secondary winding. I do not gaurantee the accuracy or safety of any information herein.

Circuit

Here is another commercial circuit of the same type as shown above, but this one runs off a single AA cell and is therefore able to use fewer parts. It is not as loud as the one above. I do not gaurantee the accuracy or safety of any information herein.

Circuit

Another reverse engineered Bird Chip trinket. The speaker for this one is built into a plastic christmas tree ornament but the electronics is built into a wall wart that plugs into a 120VAC outlet. L1 is once again just an audio transformer with an unused secondary winding. I do not gaurantee the accuracy or safety of any information herein.

Circuit
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