Tag Archives: sds011

[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

ESP8266 and SMOG part three: sensor protection, cloud upload

Last time we updated our simple SMOG sensor with display (OLED) and added BME 280 to verify the SMOG measurements – the environmental sensor – as we know that humidity over 70% can add up to the SMOG.
It’s time now to protect our sensor.
Continue reading ESP8266 and SMOG part three: sensor protection, cloud upload

ESP8266 and SMOG part two: OLED display, measuring conditions

Last time we build a simple SMOG sensor, it’s time to add display (OLED) and to verify the SMOG measurements – the environmental sensor – as we know that humidity over 70% can add up to the SMOG.
Continue reading ESP8266 and SMOG part two: OLED display, measuring conditions

ESP8266 and SMOG: Quick and snappy SMOG sensor with WiFi interface – first, basic version

Recently, we built a smog sensor which measures PM2.5 and PM10 ppm particles common in SMOG. This time let’s focus on something easy to do, without deliberations on extending life of the sensor. The Nova Fitness SDS011 (also versions 018 or 015) has proven to be quite accurate, with a good life expectancy, even with nearly theoretical unsupported air humidity above 70%. Today I will try to show you the mobile version of the sensor, using the cheapest elements, and then expand it with a temperature and humidity sensor, display – up to the cloud version. To start with – let’s build the basic version.

NOTICE: The ESPEasy MEGA 2.0 software that we use here – has been updated in January 2018 with much better SDS011 support. When finished with this version check out the updated one (fourth version)

Najmniejszy system weryfikacji smogu
Smallest SMOG measurment system

This is a very easy project that can be completed withinin 10 minutes.
Flash the software,  connect 3 cables and read the result via WWW. Something that can be shown at school (or as a school project) or at the local community – as an effective SMOG meter.
Continue reading ESP8266 and SMOG: Quick and snappy SMOG sensor with WiFi interface – first, basic version