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Digital Interface
Data interface: 2 pin for the serial data communication interface, the use of universal asynchronous receiver and receiver (UART); 1 pin fo r
the control signal interface, the use of high and low level control, all the high average 3.3VTTL level.
Interface pin definition:
PIN1
VCC
PIN2
GND
PIN3
SET
PIN4
RXD
PIN5
TXD
PIN6
RESET
PIN7/8
NC
SET = 1 (High level) when the module works in a continuous sampling mode, the module at the end of each sampling after the sampling data, the
sampling response time is less than 600ms, the data update time is less than 2S.
SET = 0 (Low level) module to enter low power standby mode
The following table defines the data for the module(PMS3003): 24 bytes
The default serial baud rate: 9600Kbps
Check bit: no
Stop bit: 1
Start symbol 1
Start symbol 2
Frame length high eight bit
Frame length low eight bit
Data 1 high eight bit
Data 1 low eight bit
Data 2 high eight bit
Data 2 low eight bit
Data 3 high eight bit
Data 3 low eight bit
Data 4 high eight bit
Data 4 low eight bit
Data 5 high eight bit
Data 5 low eight bit
Data 6 high eight bit
Data 6 low eight bit
Data 7 high eight bit
Data 7 low eight bit
Data 8 high eight bit
Data 8 low eight bit
Data 9 high eight bit
Data 9 low eight bit
Data and check high eight bit
Data and check low eight bit
Note: Collecting data is data for atmospheric environment. Data 4 = PM1.0 Data 5 = PM2.5 Data 6 = PM10.
This module can be directly connected to the computer, the data line driver for CH340, please download the corresponding drive file according to
different system.
DC5V
GND
Set pin /TTL level @3.3V
Serial port receiving pin /TTL level @3.3V
Serial port to send the pin /TTL level @3.3V
Module reset signal /TTL level @3.3V
NC
......
......
......
Data 1 indicates PM1.0 concentration, (CF = 1, standard particulate matter), Unit: µg/m3
......
......
Data 2 indicates PM2.5 concentration, (CF = 1, standard particulate matter), Unit: µg/m3
......
......
Data 3 indicates PM10 concentration, (CF = 1, standard particulate matter), Unit: µg/m3
......
......
Data 4 indicates PM1.0 concentration, (Atmospheric environment), Unit: µg/m3
......
......
Data 5 indicates PM2.5 concentration, (Atmospheric environment), Unit: µg/m3
......
......
Data 6 indicates PM10 concentration, (Atmospheric environment), Unit: µg/m3
......
......
......
......
......
......
......
......
Check code = Start symbol 1 + Start symbol 2 +......+ Date 9 low
......
3
0 x 42 (fixed)
0 x 4d (fixed)
Frame length = 2 * 9 + 2 (Data + check bit)
Data 7 (Retain)
Data 8 (Retain)
Data 9 (Retain)
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