DIY Electronic Birthday Blowout Candles

Step 1 The Circuit

Step 5 Using the Candles

To power the circuit, you need 4 batteries of 1.2V, AA or AAA size or 3 batteries of 1.5V (AA or AAA size).
Using the blowout candles is easy. Of course you need a cake to be able to use the candles :).
We organized a fictitious birthday party with a virtual cake to celebrate the project and a video of that party and the birthday candles

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