cr2032

quickly configurable low-power BLE to GPIO bridge and gpioASM runtime

Tiny Electronic Dice

Replacement PCB for the VG2430 or IVR2430 rechargeable cells on the SNK Neo Geo MVS MV1B and MV1C

u-blox NINA-B3 BLE node, based on nRF52840 and SHTC3

🐭 Dormouse — a coin-cell (CR2032) Zigbee 3.0 temperature + humidity sensor on the Silicon Labs MGM210L (EFR32MG21). Firmware + KiCad hardware + Home Assistant integration.

Ghost-shaped Halloween LED badge with an ATtiny13A, CR2032 battery and optional SAO connector. KiCad source, BOM and fabrication files.

Ruler Dino: The bench ruler that measures, sizes screws and tests your wires. KiCad 10, heypcb.ai merch.

Sprout, the plant buddy: A circuit-board sprout that cries a little blue tear when your plant is thirsty. KiCad 10, heypcb.ai merch.

Hoot, the fridge reminder owl: The fridge owl that blinks at you until you've taken your meds and had your water. KiCad 10, heypcb.ai merch.

Blob, the social battery badge: The name badge that tells people whether to come say hi. KiCad 10, heypcb.ai merch.

Pumpkin-shaped Halloween LED badge with an ATtiny13A, CR2032 battery and optional SAO connector. KiCad source, BOM and fabrication files.

Torch Cat: Boop the cat's nose and its eyes light up your keyhole. KiCad 10, heypcb.ai merch.

Bat-shaped Halloween LED badge with an ATtiny13A, CR2032 battery and optional SAO connector. KiCad source, BOM and fabrication files.

Basic CR2032 tester - KiCad source files and Bill of Materials

This is a small device for testing the light tightness of vintage cameras using @pimoroni Tiny2040 & BH1745 powered by a CR2032 button cell

Cable Bunny: Is it a charge-only cable? Ask the bunny. KiCad 10, heypcb.ai merch.