MonkMakes Power Board for micro:bit

With the micro:bit Go Bundle you have a complete set to get started coding right away. This bundle includes a micro:bit board, micro USB cable, battery holder and 2x AAA batteries.

The BBC micro:bit is a pocket-sized computer that introduces you to how software and hardware work together. It has an LED light display, buttons, sensors and many input/output features that, when programmed, let it interact with you and your world. The new micro:bit V2.2 with sound adds a built-in microphone and speaker, as well as an extra touch input button and a power button.

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Perfect for sharing the micro:bit with friends, the micro:bit club is a 10 pack containing all the pieces needed to enjoy micro:bit in STEM groups, coding clubs, school classes, scouts, guides and cubs or any other social gathering (contains 10 BBC micro:bits V2, 10x USB cables, 10 x battery holders ; 20x AAA batteries).

The micro:bit is a pocket-sized computer that you can code, customise and control to bring your digital ideas, games and apps to life. Measuring 4cm by 5cm, and designed to be fun and easy to use, users can create anything from games and animations to scrolling stories at school, at home and on the go - all you need is imagination and creativity.

The micro:bit is completely programmable. That means each of its LEDs can be individually programmed as can its buttons, inputs and outputs, accelerometer, magnetometer and Bluetooth Smart Technology. The micro:bit has a website full of coding languages, lesson plans, tutorials, and fun ideas to help you get creative

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The MonkMakes Sensor Board allows you to detect sound levels, temperature and light levels. It features ring pad connectors for use with crocodile clips make it easy to connect to the board to a microbit.

Sound Level: It senses sound level with a MEMs, which is a microphone on a chip that also features a pre-amplifier circuit. You can then use the plot bar graph block in the Microsoft MakeCode editor to display the result on the microbits LED matrix.

Temperature Level: The temperature output from the board is a voltage that indicates the temperature. This is then measured using an analog input on the micro:bit. If you want your temperatures in Fahrenheit, then multiply the temperature in degrees C by 9, divide the result by 5 and then add 32.

Light Level: The light sensor uses a photo-transistor to measure the light level and produces an output voltage that increases as the light level increases.

Features:

3V and GND connections can be made from either side and allow you to power a second board such as the MonkMakes Relay Board or MonkMakes Speaker.

LED ‘power on’ indicator.

Reverse polarity protection.

All three sensors are analog and can be connected to pins P0, P1 and P2 using alligator clips.

Detects sound level with a MEMs (microphone on a chip) and a pre-amplifier.

Uses a thermistor to measure temperature.

Light level detection with a photo-transistor (0 to 1023).

All three sensors are analog and can be connected to pins P0, P1 and P2 using alligator clips.

Dimensions:

Length: 63.2mm.

Width: 55.7mm.

Thickness: 1.6mm.

The 7-segment for micro:bit is a four digit 7-segment display for micro:bit. You can use it to display numbers, but it can also display letters and other characters, albeit with the limits imposed by the 7 segments of each digit.

Powered directly from micro:bit pins it can be used to send messages to the display using the micro:bit’s Serial blocks or a custom MakerCode extension.

The MonkMakes Plant Monitor makes it easy to build a simple “smart plant” project with the BBC micro:bit. It measures soil moisture (using a corrosion-resistant capacitive sensor), plus temperature and relative humidity, so students can log data, set alerts, or create an automatic watering warning system.

Key Features:

3-in-1 monitoring: soil moisture, temperature and relative humidity.

Capacitive moisture sensing (no electrical contact with the soil), helping resist corrosion.

Simple micro:bit connection via alligator/crocodile clip rings.

Human-readable UART serial interface for quick integration with code.

Additional analogue output (moisture only) for optional analogue reading.

Built-in RGB LED for clear, visual status feedback.

Classroom Uses:

Plant care investigations: compare watering patterns and environmental conditions.

Data logging and graphing activities (STEM / Computer Science / Geography links).

Build rule-based alerts (e.g., “too dry”, “too humid”) using the RGB LED.

Note: As with any soil probe, keep the electronics section dry and only insert the sensing prongs into the soil.

The MonkMakes CO₂ Mini Kit for BBC micro:bit allows students to measure and explore carbon dioxide (CO₂) levels in indoor environments using real sensor data. Designed for education, this compact kit is ideal for projects linked to air quality, climate science, and environmental monitoring.

The kit connects easily to the BBC micro:bit and uses a reliable CO₂ sensor to provide accurate readings, making it suitable for classroom investigations, STEM clubs, and project work. Students can log data, set alerts, and visualise changes in CO₂ levels over time using MakeCode or Python, helping to build skills in data handling, coding, and scientific enquiry.

This kit is particularly useful for lessons around ventilation, indoor air quality, sustainability, and climate awareness, making abstract environmental concepts tangible and measurable.

Key features:

CO₂ sensing kit designed for BBC micro:bit

Measures indoor carbon dioxide levels for air quality studies

Ideal for STEM, science, geography, and environmental projects

Supports MakeCode and Python

Compact format, suitable for classroom and student use