Air Quality and Temperature
Next is the ams CCS811 air quality and temperature sensor. Note the
routed out region around this sensor. That provides a buffer against thermal
changes stimulated by the circuitry on the rest of the PCB. As with the
BME280, it is possible to change the I C address of this sensor. Closing
jumper JP2 on the reverse side of the board causes the sensor to adopt
address 0x5A, and by default it will be 0x5B.
Luminosity
The last onboard sensor is the Broadcom APDS-9301. It’s capable of
detecting and reading light levels from nighttime through broad daylight.
Keep in mind that the sensor will saturate if exposed to direct sunlight. By
defaul, the sensor will have an I C address of 0x39. By adding a solder
jumper toward 0 on the jumper pads labeled JP3 on the back of the board,
the address can be changed to 0x29. By adding a solder jumper toward 1,
the address can be set to 0x49.
Jumpers on Back of the Board
There are five jumpers on the back of the board.
2
2
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