[UPDATED 03-02-2018] SMOG sensor – 2,5 and 10 micro meter particles

[Last changes]:
07-11-2017: Additional data from richer stations, Open-Smog Integration
20-12-2017: USB power control on Raspberry Pi 3, thanks to reader
02-03-2018: New API from GIOŚ Poland

SMOG is common nowadays in big cities. Let’s put together a working, precise own SMOG sensor, first for the 2,5 and 10 μm size particles. There is one issue – the choices are many, but only few are reliable, precise and have affordable price. Finally – after a log searching, I’ve chosen Nova Fitness SDS011:

  • precision is OK
  • fan included
  • ability to mount a small tube to access external air
  • very realiable
  • UART with USB converter included
  • Low Total cost: around $40 (with Orange Pi Zero) up to $60 (with Raspberry Pi)

Continue reading [UPDATED 03-02-2018] SMOG sensor – 2,5 and 10 micro meter particles

ESP8266 and SMOG part four: Sleep mode for SDS011 in ESPEasy MEGA 2.0

The SMOG sensor project became a bit complex – along with the addition of relay. In the mean time thanks to Gijs Noorlander and yours- since you build, ask and use the sensor – we got updated version of ESPEasy MEGA 2.0 for ESP8266.

Why the new blog entry? That’s because Gijs added the included in SDS011 function that when sent over serial connections allows to put SDS011 to sleep. Simple, elegant solution to extend the life and quality of the measurements of the SDS011 – better than relay approach.

ESP8266 ESP Easy MEGA 2.0
ESP8266 ESP Easy MEGA 2.0

Now, just by means of connecting extra jumper cable we can go back to a simpler version of the sensor – a union of first version with addition of the temperature and humidity sensor form the second one.
Continue reading ESP8266 and SMOG part four: Sleep mode for SDS011 in ESPEasy MEGA 2.0