7-segment for micro:bit by Monk Makes

The Monk Makes 7-segment display for micro:bit is a four-digit marvel. It's not just for numbers; it can show letters and other characters too, though with some 7-segment limitations. It's a breeze to connect, needing only one micro:bit pin and power. Powered directly from micro:bit pins, it lets you send messages via the micro:bit’s Serial blocks. Ideal for sensor readings and clock-making. Connect power pins GND and 3V, and link the Rx pin to any micro:bit pin. You can also bolt it to the micro:bit. With block code examples, you can display numbers like '1234' or text like 'Byte'. Clear the display with '/', and use buffered mode to avoid flickering. There are examples for a countdown timer, thermometer, and even MicroPython use. Troubleshooting tips are available for issues like low brightness or non-refreshing displays.

Using this 7-segment display is easy. First, connect the power pins GND and 3V between the micro:bit and the display. Then, connect the Rx pin of the display to any micro:bit pin. You can also bolt the display to the micro:bit if you prefer. To display numbers or text, use the micro:bit’s Serial blocks. Remember to set the baud rate to 9600. If you want to clear the display, send the special character “/”. For repeated updates, use buffered mode by sending the “,” (comma) character. When using MicroPython, initialize the UART and write the desired text or number. Note that the display may be less bright when using batteries. If it's not refreshing, introduce a longer delay between refreshes or reset it by momentarily un-clipping the positive power lead.