Gravity: Laser PM2.5 Air Quality Sensor For Arduino

Digital PM2.5 sensor for measuring particulate concentration in air from 0.3 to 10 microns. Outputs data digitally, suitable for various environments.

Pin 1Official table 2 row 1
VCC / Positive Power
Type · power
Pin 2Official table 2 row 2
GND / Negative Power
Type · ground
Pin 3Official table 2 row 3
SET / Mode setting (More hereof later)
Type · pin
Pin 4Official table 2 row 4
RXD / receive serial port pin (3.3V level)
Type · power
Pin 5Official table 2 row 5
TXD / Transferring serial port pin (3.3V level)

Start wiring

UART

Verify supply voltage and logic levels before powering up.

Module pins: Pin 1, Pin 4, Pin 5, Pin 2. Schematik maps them to your board in the app.

Related groups

4 groups

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Pin	Position	Type	Function
Pin 1	Official table 2 row 1	power	VCC / Positive Power
Pin 2	Official table 2 row 2	ground	GND / Negative Power
Pin 3	Official table 2 row 3	pin	SET / Mode setting (More hereof later)
Pin 4	Official table 2 row 4	power	RXD / receive serial port pin (3.3V level)
Pin 5	Official table 2 row 5	power	TXD / Transferring serial port pin (3.3V level)
Pin 6	Official table 2 row 6	digital io	RESET / Reset
Pin 7/ 8	Official table 2 row 7	pin	NC / NUll

Pinout

Start wiring

Air quality

Temp and humidity

Environment sensors

Light and colour