HALJIA Expansion Board for Micro:bit Mini Breakout Board with Buzzer Adapter Compatible with BBC Microbit V2, V1 Controller Board (Without Micro bit) DIY Programmable Kit for Beginners

• Widely used: It has extended all available IO ports on micro:bit, and led out them in the form of GVS(GND, VCC and Signal). With this board, we can extend various modules like LED light, photocell, etc.
• DIY programming: It supports Makecode graphical programming, JavaScript programming, Python and other programming methods. It better increases children’s programming fun and develop their sense of curiosity and creativity.
• On-board passive buzzer: The buzzer is connected via jumper-cap. If the jumper-cap for buzzer is taken off, P0 is used as a normal IO port. The buzzer can play all kinds of music via your programming.
• Voltage choice: You can select 3.3V or 5V, or you can adapt the voltage by yourself. Providing more convenience for external modules with different voltages.
• Fine workmanship: Solder is very clean, everything is aligned nicely. All pins on the expansion board are well labelled and neatly visible.

Introduction: This is an expansion board for Micro:bit, which is specifically used for the IO ports of Micro:bit. It has taken all the IO resources on the Micro:bit, and also has a buzzer on the board. It is connected to the P0 pin through a jumper cap. The P0 pin can be released using the jumper cap. The small size is very suitable for DIY. What’s more, it can implement a variety of functions by programming, and children can develop their creativity during programming the expansion board. All the GPIO ports on the micro:bit control board are divided into 3PIN interface (GND, VCC, Signal). Each Signal pin has VCC and GND corresponding to. You can freely switch VCC to 3.3V or 5V by changing the position of the jumper-cap; with 3 independent 3V3 and 5V pins. It is very easy to connect the micro:bit control board and other sensor modules. Features: 1. Small size: 57mm*41mm*13mm 2. Weight:20.3g 3. 5V 500mA selfrecovery fuse 4. Voltage output: Select 3.3V or 5V via jumper cap 5. Power supply: 5V 500mA 6. Extend most GPIO ports on micro:bit by GVS pins 7. Integrated a buzzer 8. Comes with a power indicator Note: 1. If P0 is used as a normal IO port, the jumper cap for buzzer must be taken off, otherwise the buzzer will sound or the IO read value will be abnormal. 2. Not include micro:bit board. Packing List: 1 x Expansion Board