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 |
|---|---|---|---|---|---|---|---|---|
| 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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