Adafruit
20mm Coin Cell Breakout Board (CR2032)
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A simple sewable breakout board with a CR2032 coin cell battery holder pre-soldered on and 0.1" pitch breakout pins for easy connection. Ideal for powering v...
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A simple sewable breakout board with a CR2032 coin cell battery holder pre-soldered on and 0.1" pitch breakout pins for easy connection. Ideal for powering very low-current projects or adding a battery backup circuit to a real-time clock or similar module.
Key Features
- CR2032 Coin Cell Holder – Pre-soldered 20mm coin cell socket
- 0.1" Pitch Breakout – Header pins for breadboard or PCB connection
- Sewable – Mounting holes for e-textile and wearable projects
- Fully Assembled – Ready to use out of the box
Ideal For
- Battery backup for real-time clocks (RTC)
- Low-current wearable electronics
- Breadboard prototyping with coin cell power
- E-textile and sewable projects
Package Contents
- 1× 20mm Coin Cell Breakout Board (assembled and tested)
- 1× 0.1" Header Strip
Note: CR2032 coin cell battery is not included.
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
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Power & Batteries
Wearables & E-textiles
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