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The Plantower PMS5003

The PMS5003 uses a serial interface with a baud rate of 9600 Baud.

Here are the pin descriptions from the data sheet:

plantower_pins.png

The pinout table for the PMS5003 connection is given below (the colors correspond to my cable and yours may well differ). The Plantower sensor may be connected to a PC using a USB to serial interface or to the ESP32 with the pin connections in the table.

Readout programs can be downloaded from my github repository https://github.com/uraich/dust-sensors/tree/main/plantower

Pin number 8 7 6 5 4 3 2 1
signification nc nc reset (active low) Tx (3.3V level) Rx (3.3V level set pin (3.3V or open: normal working status) Gnd Vcc: 5V
on ESP32     D0: GPIO 26 D1: GPIO 22 D2: GPIO 21 n.c. Gnd 5V
cable color n.c. n.c. black gray white violet (n.c.) blue green

-- Uli Raich - 2022-06-01

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