Today I soldered a few more of my custom air quality thingies, flashed them with the exact same program as the other ones, gave them a USB adapter and plugged them in their own spot in the house

They automatically found their path in the mesh, then they started sharing and recording their readings, which automatically appeared in my dashboard, and all I had to do was rename them there

In the picture, the number in the parentheses is the number of readings for the day (more or less one per minute) and all bars and lines represent average readings for the day; I have one graph per room to get the timelines

Humidity and temperature are on the left axis, all the other are on the right axis

(Looks like the one in the bedroom crashed again)

The one in the attic is missing however long it took me to solder the new things, since that’s the one I unplugged to use as a template

#electronics #bme680 #esp8266

This morning my ISP had an outage and I restarted their router, which happens to power my rpi0 with the web server for this project

And I forgot to restart that web server, so I lost all data from today

But before that, it was performing beautifully. There were 844 records for each node since last night, like clockwork. I happen to have cleared my previous data last night, so all the nodes were running and already on a stable mesh at the time.

Each sensor has been broadcasting its readings every three seconds, at which point my server decides to ignore most readings until the 1 minute mark (per sensor) and I’m happy that not one minute was lost for half a day of recording

I am less happy that after the web server was restarted, none of the microcontrollers found it by themselves. It looks like the entire mesh collapsed because the root node couldn’t bridge both networks again.

I understand that the root node didn’t restart the bridge between both WiFi (I didn’t set it up that way), but I would have thought that the iot mesh should have continued independently? Perhaps because it is declared as the root node? I’ll have to test this more.

I reset the ESP32 root node and it picked up the home WiFi fine, but none of the probes connected to it again (this mesh should have self healed within minutes, at most)

I went around the house to reset each ESP8266 node and yes, that is when the mesh self organized again and I started seeing the web server collecting readings again, as their BME680 sensor finished its self calibration routine

#meshnetwork #AirQuality #esp32 #esp8266 #bme680 #raspberrypi