Difference: DustSensors (4 vs. 5)

Revision 52022-06-01 - UliRaich

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META TOPICPARENT name="Exercises"

Dust Sensors

Introduction

In order to measure air pollution dust sensors play an important role. They are often based on an optical system where light, scattered on dust particles is measured. I have 3 different sensors which should allow me to compare results:

Changed:
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  • Plantower PMS5003. I found 2 manuals for this sensor:
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  pms5003_dust_sensor.png
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  • The Shinyei PPD42NS
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  ppd42nj_dust_sensor.png
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  • The Sharp GP2Y1010AU0F
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<		gp2y101au0f_dust_sensor.png

The Plantower PMS5003 sensor

 
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<		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
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 - 2021-01-28

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