Pressure & Humidity Sensor Whisker

AST1025

Whisker Kickstarter Item


Note: This item is currently only available on Kickstarter, it will be for sale on our site after the Kickstarter is complete and rewards have been fullfilled



DESCRIPTION

This Whisker lets you measure Humidity and Pressure via the BME280. This sensor is an upgrade from the BMP280 used on our Barometric Pressure TinyShield because it also includes a Humidity Sensor. 

The Whisker Adapter TinyShield (ASD2022) incorporates level shifting and a local power supply to ensure proper and safe operation over the entire TinyDuino operating voltage range up to 5V.

To learn more about the TinyDuino Platform, click here

    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
        •  Due to the low current, this board can be run using the TinyDuino coin cell option.

      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 Whisker to upper top Whisker Connector): 3.70mm (0.15 inches)
      • Weight: 1 gram (.04 ounces)

      NOTES

      • You can also use this Whisker 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



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