Jack-O-Lantern: 2032 Flash

Halloween themed PCB for the 2025 Halloween Contest at OSHWLAB:

Flashing LED Circuit Jack-O-Lantern Style PCB;
- All basic parts except the coin cell holder
- Uses 2032 coin cell battery for power on BT1 (Left eye)
- Use the spare coin cell slot for storage of the battery when you want to turn it off.

Circuit needs small mod to work:

- Do not populate R3 (area shown in purple)
- Apply solder bridge to connect the traces shown with red dotted line.

Enjoy and make sure to like! :)