Air Quality Monitor (PM 2.5, Temperature & Humidity Sensor)
Laser-scattering air quality monitor measuring PM1.0, PM2.5, and PM10 particle counts alongside temperature and humidity. Compatible with Arduino and STM32.
Pinout
- PIN1Official table 2 row 1
VCC / + (+5V)
Type · Power - PIN2Official table 2 row 2
GND / -
Type · Ground - PIN3Official table 2 row 3
SET / Set pin/TTL level @3.3V, high level or suspending is normal working status, while low level is sleeping mode.
Type · Power - PIN4Official table 2 row 4
RXD / Serial port receiving pin/TTL level @3.3V
Type · Power - PIN5Official table 2 row 5
TXD / Serial port transmitting pin/TTL level @3.3V
Type · Power - PIN6Official table 2 row 6
RESET / Module reset signal /TTL level @3.3V, low reset
Type · Power - PIN7Official table 2 row 7
NC /
Type · Unknown - PIN8Official table 2 row 8
NC /
Type · Unknown
| Pin | Position | Type | Function |
|---|---|---|---|
| PIN1 | Official table 2 row 1 | Power | VCC / + (+5V) |
| PIN2 | Official table 2 row 2 | Ground | GND / - |
| PIN3 | Official table 2 row 3 | Power | SET / Set pin/TTL level @3.3V, high level or suspending is normal working status, while low level is sleeping mode. |
| PIN4 | Official table 2 row 4 | Power | RXD / Serial port receiving pin/TTL level @3.3V |
| PIN5 | Official table 2 row 5 | Power | TXD / Serial port transmitting pin/TTL level @3.3V |
| PIN6 | Official table 2 row 6 | Power | RESET / Module reset signal /TTL level @3.3V, low reset |
| PIN7 | Official table 2 row 7 | Unknown | NC / |
| PIN8 | Official table 2 row 8 | Unknown | NC / |
Pin details
8 connections- PIN1Official table 2 row 1
VCC / + (+5V)
Power - PIN2Official table 2 row 2
GND / -
Ground - PIN3Official table 2 row 3
SET / Set pin/TTL level @3.3V, high level or suspending is normal working status, while low level is sleeping mode.
Power - PIN4Official table 2 row 4
RXD / Serial port receiving pin/TTL level @3.3V
Power - PIN5Official table 2 row 5
TXD / Serial port transmitting pin/TTL level @3.3V
Power - PIN6Official table 2 row 6
RESET / Module reset signal /TTL level @3.3V, low reset
Power - PIN7Official table 2 row 7
NC /
Unknown - PIN8Official table 2 row 8
NC /
Unknown
Start wiring
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: PIN1, PIN3, PIN4, PIN5, PIN6, PIN2. Schematik maps them to your board in the app.
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