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Product description: SparkFun MicroMod Environmental Function Board - SparkFun WRL-18430
SparkFun MicroMod Environmental Function Board - a board equipped with a number of environmental sensors such as an air quality sensor (Sensirion SGP40). humidity and temperature sensor (Sensirion SHTC3) and CO2 sensor (Sensirion STC31). It has a MicroMod M.2 connector, so you can connect any MicroMod processor board that is part of the SparkFun MicroMod ecosystem to it.
The kit does not include the SparkFun MicroMod processor, which is required for proper operation of the module.
The module comes with a range of environmental sensors from SparkFun.
Technical Specification SparkFun MicroMod Environmental Function Board
- Interface: M.2 MicroMod Edge
- Input voltage range: 2.5 V to 6 V
- 5 V via USB connector on motherboard
- 3.7 V to 4.2 V through Li-Pol battery connector on motherboard
- Voltage of the logic part: 3,3 V
- Voltage stabilizer: AP2112 3.3 V / 600 mA
- Built-in sensors
- Sensirion SGP40 air quality sensor
- Humidity and temperature sensor Sensirion SHTC3
- Sensirion STC31 CO2 sensor
- Communication interface: I2C
- I2C interface address for each sensor
- 0x59 (SGP40)
- 0x70 (SHTC3)
- 0x29 (STC31)
Specification of air quality sensor
- Type: air quality sensor
- Built-in circuit: Sensirion SGP40
- I2C interface address: 0x59 (default)
- Operating voltage range: 1.7 V to 3.6 V
- Current consumption
- 2.6 mA during continuous operation
- 34 µA when idle (heater off)
- Output signal
- Digital raw value (SRAW): 0 to 65535
- Digitally processed value (VOC index): 0 to 500 VOC index points
- Switching behavior
- Time to reliable detection of VOC events: < 60 s
- Recommended sampling interval
- VOC index: 1 s
- SRAW: 0.5 s to 10 s (typical 1 s)
- VOC index - ranges
- 0 to 100 - air quality: excellent
- 100 to 200 - air quality: good
- 200 to 300 - air quality: slightly polluted
- 300 to 400 - air quality: moderately polluted
- 400 to 500 - air quality: very polluted
SparkFun MicroMod Environmental Function Board - SparkFun WRL-18430.
Module from SparkFun - rear view.
Humidity and temperature sensor specification
- Type: humidity and temperature sensor
- Embedded chip: Sensirion SHTC3
- I2C interface address: 0x70 (default, not configurable)
- Operating voltage range: 1.62 V to 3.6 V
- Relative humidity
- Measuring range: 0% to 100%
- Typical accuracy: ± 2% RH
- Resolution: 0.01% RH
- Temperature
- Measuring range: -40°C to +125°C
- Typical accuracy: ±0.2°C
- Resolution: 0.01°C
- Typical current consumption (varies with mode)
- 4.9 µA to 430 µA (normal mode)
- 0.5 µA to 270 µA (low power mode)
- Built-in STC31 chip (allows humidity and temperature compensation)
Specification for CO2 sensor
- Type: CO2 sensor
- Embedded circuit: Sensirion STC31
- I2C interface address
- 0x29 (default)
- 0x2A, 0x2B, 0x2C (configurable)
- Operating voltage range: 2.7 V to 5.5 V (typical 3.3 V )
- Calibrated for CO2 in N2 in air
- Measuring ranges
- 0 to 25% vol. in N2
- 0 to 100% vol. in air
- Typical accuracy
- 0.5 vol% + 3% of measured value in N2
- 1 vol% + 3% of measured value in air
- Resolution: 16-bit
- Repeatability: 0.2% vol.
- Temperature stability: 0.025% vol/°C
- Start-up time: 14 ms
What is MicroMod? What is MicroMod?
MicroMod is a modular interface ecosystem that allows you to easily and quickly connect your SparkFun MicroMod microcontroller to various peripherals - sensors and accessories. The system uses the M.2 standard, so you can quickly and seamlessly swap available processor boards, depending on your current needs. This solution significantly simplifies the whole prototyping process.
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