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Small green circuit board with silver sensor chip and multiple pin headers

Pimoroni

Pimoroni PIM472 BME280 Breakout Board

SKU CH-YVMD-VWG97

Measures temperature, pressure and humidity over I2C with selectable 0x76 or 0x77 address, Qwiic/STEMMA QT connector and 3.3V or 5V compatibility

  • Bosch BME280 sensor measures temperature, pressure and humidity
  • I2C interface with selectable address 0x76 or 0x77 via cuttable trace
  • Qwiic/STEMMA QT connector for solderless wiring to microcontrollers
  • Works at 3.3 V or 5 V with reverse polarity protection on Breakout Garden
  • Raspberry Pi pinout and Arduino compatibility with Python library support

Pimoroni PIM472 BME280 Breakout Board

The Pimoroni PIM472 is a breakout board built around the Bosch BME280 sensor that measures temperature, barometric pressure and relative humidity. It connects through an I2C bus with a selectable address of 0x76 or 0x77 and includes a Qwiic/STEMMA QT connector for solderless wiring. The board works at 3.3 V or 5 V and matches the Raspberry Pi GPIO pinout on pins 1, 3, 5, 7 and 9.

Makers adding environmental sensing to a Pi

Developers who need local temperature, pressure and humidity readings for home monitoring, weather stations or Homebridge integration will find the board straightforward to use with the provided Python library. It is not suited for applications that require gas detection, particulate measurement or an onboard microcontroller to log data without a host board.

I2C address select via cuttable ADDR trace

The only hardware setting that determines whether the sensor responds on 0x76 or 0x77 is the ADDR trace on the PCB; cutting it changes the address so two boards can share the same bus. Confirm the required address before soldering or cutting, because the trace cannot be restored once severed.

Ciri-ciri utama

  • Bosch BME280 sensor measures temperature, pressure and humidity
  • I2C interface with selectable address 0x76 or 0x77 via cuttable trace
  • Qwiic/STEMMA QT connector for solderless wiring to microcontrollers
  • Works at 3.3 V or 5 V with reverse polarity protection on Breakout Garden
  • Raspberry Pi pinout and Arduino compatibility with Python library support

Spesifikasi

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Soalan tentang produk ini

Should I use the default I2C address 0x76 or cut the ADDR trace for 0x77?

Keep 0x76 if this is the only BME280 on the bus; cut the trace to switch to 0x77 when a second device already occupies 0x76.

What environmental readings does the BME280 actually deliver in a project?

The sensor returns calibrated temperature in degrees Celsius, barometric pressure in hectopascals, and relative humidity in percent.

How does the Qwiic/STEMMA QT connector limit the way I wire the board?

The connector carries 3.3 V power and I2C signals only, so the board must be daisy-chained on a 3.3 V bus and cannot be used with 5 V logic without a level shifter.

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