Power:bit with Coin Cell Batteries and micro:bit V2 Go

Note: There are two options of Power:bit board to choose from:

• Power:bit Board WITH 2 x CR2025 Coin Cell Battery, and a micro:bit V2 Junior (comes with micro:bit V2 board and a USB micro B cable)
• Power:bit Board WITHOUT micro:bit board.

Power:bit + 2 pcs CR2025 + micro:bit V2 Junior	Power:bit ONLY (without micro:bit)

Note: The Power:bit Expansion board works with both micro:bit V1 and micro:bit V2.

This is a very good power board for micro:bit. The Power:bit is a pocket-sized extension board. It is powered by two CR2025 button batteries and carries a buzzer on the board. Due to its small cute size and abundant electric power, it is quite suitable to be applied to micro:bit wearable devices like pedometers, timers, portable music broadcasters, and so on.

Main Components:

Power Switch

The end marked I is for power ON, and the other marked O is for power OFF.

1x4 Pin Connector

It can export pins like P1, P2, 3V, GND. We can use it to do some extensions.

Two CR2025 Battery Sockets

You can place two 2025 batteries（or 3V button battery) into the socket.

Buzzer

The buzzer is controlled by the P0 port.

Quick Start

Hardware Connection

Fix micro:bit onto power:bit with 5 screws. Then place a pair of 3V CR2025 batteries (included in this kit) into the battery socket of power:bit. When we slide the switch to the end marked I, the whole device is powered on. When we slide the switch to the end marked O, the whole device is powered off.

Programming

Click to open Makecode online editor, and write your code to make micro:bit screen displays a flashing heart.
You can see the whole program from the link here:https://makecode.microbit.org/_MP28fbDmUMfz

• Powered by two CR2025 coin cell batteries.
• Works with both the micro:bit V1 and micro:bit V2
• The buzzer on board is connected to P0 port on micro:bit.
• P0, P1, P2, 3V, GND can be lead out by pins.
• Enable to match micro:bit and acrylic watch band.

Specifications:

• Version: V1.4
• Working Voltage: 2.7V - 3.3V
• Weight: 10.7 g
• Dimension: 51.55mm x 41.88mm

Pins and Connectors:

• Power:bit with Coin Cell Batteries and micro:bit Junior V2 Kit
  • 1 x Power:bit 
  • 7 x 3x5 Countersunk Screw
  • 2 x CR2025 Coin Cell Battery
  • 1 x micro:bit V2 Junior Kit
    • 1 x micro:bit V2 mainboard
    • 1 x USB micro-B cable

• Power:bit Board WITHOUT micro:bit board.
  • 1 x Power:bit 
  • 7 x 3x5 Countersunk Screw

• Wiki page with example makecode, by Elecfreaks