smôl Environmental Peripheral Board

BME280 Pressure, Humidity and Temperature sensor:

• Typical current consumption:
  • Humidity measurement: 340µA (Typ)
  • Pressure measurement: 714µA (Typ)
  • Temperature measurement: 350µA (Typ)
  • Standby: 0.2µA (Typ)
  • Sleep: 0.1µA (Typ)
• Temperature Range:
  • Full Accuracy: 0°C-65°C (32°F-149°F)
  • Operational: -40°C-85°C (-40°F-185°F)
• Humidity Range: 0-100% RH
• Pressure Range: 300-1100 hPa (30,000-110,000 Pa or approx. 4.35-15.95 PSI)

SGP40 Air Quality sensor:

• Typical current consumption:
  • 2.6mA during continuous operation (at 3.3V)
  • 34µA when idle (heater off)
• Output signal:
  • Digital raw value (SRAW): 0 - 65535 ticks
  • Digital processed value (VOC Index): 0 - 500 VOC Index points
• Switch-on behavior:
  • Time until reliably detecting VOC events: <60s
  • Time until specifications are met: <1h
• Recommended sampling interval:
  • VOC Index: 1s
  • SRAW: 0.5s - 10s (Typ. 1s)

VEML7700 Ambient Light sensor:

• Typical current consumption:
  • Operation: 45µA (Typ) (100ms refresh time)
  • Shutdown: 0.5µA (Typ)
• High accuracy ambient light sensor:
  • High sensitivity photodiode
  • Low noise amplifier
  • 16-bit A/D converter
  • I2C bus communication interface
• Measurement range:
  • 0.01 lux to 167000 lux
• Resolution:
  • 0.005 lx/ct,

smôl Specifics:

• Interface: I2C
  • BME280 Address: 0x76
  • SGP40 Address: 0x59
  • VEML7700 Address: 0x10
• GPIO:
  • None

Properties:

• Length: 1.60" (40.6mm)
• Width: 0.42" (10.7mm)
• Height: 0." (mm) max.
• Weight: g (0.0oz)
• PCB thickness: 0.8mm