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Quick and visually compelling projects don’t come easy ? Naaah, just like last time – let’s get on a very nice and easy project – attaching display onto Raspberry Pi. As we were chating on the Malinowe Pi Group, Hubert Wu pointed me to a OLED 128×64 display, monochrome. With a quite decent resolution of 128×64 and based on OLED technology this is a nice 0.96 inch display. Well, my first computer was running at Hi-Res of 640×400 and monochrome too. Priced at $3-$5 pops-up as: ”0.96″ I2C IIC Serial 128X64” in popular stores and is clearly based on original Adafruit SSD1306 – which would be my first choice!

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)

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.

Measurement of basic environmental data in our apartment – temperature and humidity is one of the most popular applications of commonly available sensors for Raspberry Pi (RPi), Orange Pi (OPi) and ESP8266.
Then we added ability to measure the SMOG otuside and inside and today we will deal with t...

Since its inception, Domoticz has tried to reconcile many different goals:

• the availability of different plug-ins and hardware
• ideas for user automation
• scripting (LUA and more recently Python) and if, then, else mechanisms
• integration of off-the-shelf third-party solutions
• integration of open-source libraries
• support for various hardware platforms, including SBCs, which often have their own hardware and performance limitations

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 and send the data to cloud.