DESCRIPTION This Wireling lets you measure Humidity, Pressure, Temperature, and the approximate Altitude all from the small BME280 sensor. This sensor is an upgrade from the BMP280 used on our Barometric Pressure TinyShield because it also includes a Humidity Sensor. New to Wirelings? Check out the Wireling Overview! Note* 5-Pin Wireling cables not included and sold separately. TECH SPECS Bosch BME280 Sensor Specs Digital interface I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz) Operating range -40…+85 °C, 0…100 % rel. humidity, 300…1100 hPa Humidity sensor and pressure sensor can be independently enabled/ disabled Register and performance compatible with Bosch Sensortec BMP280 digital pressure sensor RoHS compliant, halogen-free, MSL1 Pressure Sensor RMS Noise 0.2 Pa, Equiv. to 1.7 cm Offset temperature coefficient ±1.5 Pa/K, Equiv. to ±12.6 cm at 1 °C temperature change Humidity Sensor: Response time 1 s Accuracy tolerance ±3 % relative humidity Hysteresis ±1% relative humidity TinyDuino Power Requirements Voltage: 3.0V - 5.5V Current: 1.8 µA @ 1 Hz humidity and temperature 2.8 µA @ 1 Hz pressure and temperature 3.6 µA @ 1 Hz humidity, pressure, and temperature 0.1 µA in sleep mode Pins Used A5/SCL - I²C Serial Clock line A4/SDA - I²C Serial Data line Dimensions 10mm x 10mm (.394 inches x .394 inches) Max Height (from the lower bottom of Wireling to upper top Wireling Connector): 3.70mm (0.15 inches) Weight: 1 gram (.04 ounces) NOTES You can also use this Wireling without the TinyDuino – modifying the connecting cable by removing the opposite connector and stripping/tinning the wires, you can solder the connector cable to any other microcontroller board of your choice! DOWNLOADS Bosch BME280 Datasheet Schematic Eagle Files Sample Arduino code CAD 3D and 2D Files
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