User Manual

PoKeys user manual
59
www.poscope.com
List of supported sensors
- LM75 (Maxim, TI, NXP) temperature sensor for the temperature range -55 °C to +125 °C with
the resolution of 0.5 °C. The sensor has configurable address and up to 8 sensors can be
connected.
- SHT21 (Sensirion) temperature and humidity sensor for the temperature range -40 °C to
+125 °C with the resolution of 0.01 °C and air relative humidity in range 0 to 100 %.
- Si7020 (SiLabs) air temperature and relative humidity sensor
- Si1141 (SiLabs) IR and visible light intensity and reflection
- MCP3425 (Microchip) A/D converter with selectable gain
- MCP9600 (Microchip) thermocouple to temperature converter
- iAQ-Core C (AMS) indoor air quality module, measures VOC (volatile organic compound) and
CO
2
levels
- MMA7660 (NXP) 3-axis accelerometer
- LIS2DH12 (ST) 3-axis accelerometer
- BH1750 (Rohm) light sensor
- BME280 (Bosch) air temperature, relative humidity and absolute pressure
- ADS1115 (TI) 16-bit 4-channel A/D converter with selectable gain (up to 16x)
- DS18B20 (Maxim) temperature sensor for the temperature range of -55 °C to +125 °C with
the resolution of 0.0625 °C. As each sensor has its own unique sequence ID, up to 10 sensors
can be connected to PoKeys.
- DS18S20 (Maxim) temperature sensor
- DS2413 (Maxim) GPIO inputs
- DHT11, DHT21 and DHT22 (AM2302) temperature and humidity sensors
Figure 36: Thermal image of a temperature sensor being connected directly to a circuit board. The thermal conductivity
of the sensor's leads causes the sensor to register higher temperature than the ambient real temperature. Use properly
longer connections between sensor and sensor host board for the accurate readings