Kitronik
Air Quality and Environmental Control HAT for Raspberry Pi
The Kitronik Air Quality Control HAT for Raspberry Pi lets you monitor, log, and react to environmental data using the BME688 sensor. It measures temperature...
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The Kitronik Air Quality Control HAT for Raspberry Pi lets you monitor, log, and react to environmental data using the BME688 sensor. It measures temperature, pressure, humidity, air quality index, and eCO2, with an on-board OLED display and ZIP LEDs for visual feedback. An RP2040 co-processor handles the analogue inputs and LED control.
Beyond sensing, the HAT provides connection points for external devices including analogue sensors, servos, motors, and heater pads — enabling reading-based actions and automated responses. It conforms to the Raspberry Pi HAT standard and is powered directly via the GPIO connector.
Key Features
- BME688 Sensor – Temperature, pressure, humidity, air quality index, and eCO2
- 128×64 OLED Display – Black and white screen for data visualisation
- 3× ZIP LEDs – Programmable status indicators (controlled via RP2040)
- Piezo Buzzer – Audio alerts and notifications (GPIO26)
- 2× High-Power Outputs – GPIO13 and GPIO19 (1A max each)
- Servo Output – GPIO6 with supply voltage
- 3× Analogue Inputs – ADC0, ADC1, ADC2 via RP2040 (each with 3.3V and GND)
- Additional Breakouts – GPIO22, GPIO23, GPIO24 + 3.3V and GND on solder pads
- I2C Bus – GPIO2 and GPIO3 for BME688 and OLED
Compatibility
Works with all Raspberry Pi versions featuring the 40-pin GPIO connector: Pi 2, 3, 4, 5, Zero, and Zero 2. Tested with Pi 2, 3, 4, 5, and Zero 2.
Specifications
- Dimensions – 65 × 56.5 × 10.2mm
- PCB Thickness – 1.6mm
- Power – Via Raspberry Pi GPIO connector (5V or 3.3V as required)
Ideal For
- Indoor air quality monitoring and data logging
- Environmental control and automation projects
- STEM education with Raspberry Pi
- Smart home environmental sensing
Package Contents
- 1× Kitronik Air Quality Control HAT for Raspberry Pi
pip install KitronikAirQualityControlHATResources
Jargon buster
Plain-language definitions for the technical terms used above.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- OLED
- OLED stands for organic light-emitting diode, a display type where each pixel produces its own light. It matters because OLED screens are thin, high-contrast and easy to read for small status displays, but they can be more sensitive to image burn-in than some other display types.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- RP2040
- The RP2040 is a dual-core Arm Cortex-M0+ microcontroller chip from Raspberry Pi, used on many maker boards and offering programmable I/O, multiple GPIO pins and reasonable processing speed. Code and accessories built for that chip should work where RP2040 compatibility is listed, though demanding tasks such as reading a camera can require careful pin allocation and timing.
- servo
- A servo is a motor with built-in position control, usually told to move to a specific angle by a control signal. It matters when you need repeatable movement, such as steering, arms, flaps, or linkages, rather than continuous spinning.
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