This product supports 5V power supply voltage, output signal TTL
Is 5V, higher than this voltage, the product will burn out,
Please remember!
This product uses the principle of laser scattering and can obtain the concentration of suspended particles in the air of 0.3 to 10 microns.
Remarks: The pitch of the interface is 2.54, and the 90-degree pin interface is used without special instructions;
Product specification
Product size: L*W*H=71*70*23mm
Protocol :
Serial communication protocol: 9600 8N1. (Rate 9600, data bit 8, no parity bit, stop bit 1)
Serial port reporting communication cycle: 1+0.5 seconds
Data frame (10 bytes): message header + instruction number + data (6 bytes) + checksum + message tail
Byte number name remarks
0 packet header AA

1 Instruction number C0

2 Data 1 PM2.5 low byte

3 Data 2 PM2.5 high byte

4 Data 3 PM10 low byte

5 Data 4 PM10 high byte

6 Data 5 0 (reserved)

7 Data 6 0 (reserved)

8 Checksum Checksum

9 Trailer AB

Checksum: the sum of bytes from data 1 to data 6.

PM2.5 data content: PM2.5(ug/m3) = ((PM2.5 high byte*256) + PM2.5 low word

Section)/10

PM10 data content: PM10(ug/m3) = ((PM10 high byte*256) + PM10 low byte)/10

1. First install the USB to TTL driver software;
2. USB to TTL serial cable, connect PM2.5 sensor, plug in computer;
3. After power on, open the serial port debugging assistant software, select the serial port used by the USB to TTL serial line, and use the baud rate of 9600.