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SparkFun BME280 Breakout Hookup Guide

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Contributors: MTaylor
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Assembly

Attaching the headers

If you got a board without headers, you will need to solder to the PTH pads. Regular wires can be soldered in, but for a more configurable breadboard experience you may want to attach headers.

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Use a breadboard to align and hold the pins

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Prepare to solder

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Solder on the pins

For generic operation solder both headers (left). If you only need I2C (middle), or SPI (right), only attach those headers.

I2C Connection

The sensor pulls the I2C lines to 3.3V, so they can be directly connect to the redboard's A4/A5 pins, or the SDA/SCL pins (as long as they're configured by Wire). Make sure to power the sensor from 3.3v! The power and ground pins are connected, so you only need to connect to one side.

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Diagram showing I2C connection to the BME280. You could also use the dedicated SDA and SCL lines found on most Arduino boards.

SPI Connection

The SPI connection isn't quite straightforward when connected to a RedBoard. The Logic Level Converter is required to bridge between the 3.3v requirement of the BME280 and the 5v IO of the RedBoard. 3.3v microcontrollers such as the fabulous Teensy 3.2 can be directly connected.

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Diagram showing SPI connection to the BME280

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