This little gem features an atmospheric pressure sensor, temperature sensor and humidity sensor in one cute little module.

The module is powered by a Bosch BME280 sensor, small in size and with low power consumption, featuring I2C/SPI Interface.

SPECIFICATIONS

• Operation range (full accuracy):
  • Pressure: 300...1100 hPa
  • Temperature: -40…85°C
• Interface: I2C and SPI
• Average current consumption (1Hz data refresh rate):
  • 1.8 μA @ 1 Hz (H, T)
  • 2.8 μA @ 1 Hz (P, T)
  • 3.6 μA @ 1 Hz (H, P, T)
• Average current consumption in sleep mode: 0.1 μA
• Humidity sensor:
  • Response time (τ63%): 1 s
  • Accuracy tolerance: ± 3 % relative humidity
  • Hysteresis: ≤ 2 % relative humidity
• Pressure sensor:
  • RMS Noise: 0.2 Pa (equiv. to 1.7 cm)
  • Sensitivity Error: ± 0.25 % (equiv. to 1 m at 400 m height change)
  • Temperature coefficient offset: ±1.5 Pa/K (equiv. to ±12.6 cm at 1°C temperature change)
• Supply voltage: 3.3 V
• Size: 15 x 10 mm
• Weight: 1 g
• The diameter of the mounting holes: 3 mm

PINOUT

• VCC - Supply voltage 3.3 V
• GND - Ground
• SCL - Clock signal I2C / SPI
• SDA - Data line I2C / MOSI in SPI mode
• CSB - Chip Select
• SD0 - MISO in SPI mode