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:

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
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
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

-- Uli Raich - 2022-06-01

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