The Plantower PMS5003

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

The pinout table for the PMS5003 is given below (the colors correspond to my cable and yours may well differ)

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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