The following notes may assist new users with the configuration.
When flashing nodeMCU select the upload file that matches your setup i.e. the docs suggest latest_en.bin. In our experience this will only provide PM sensor data… if you have a temperature, humidity, pressure sensor like the bm280 then you will need to select latest_en_BMx_280… or other that matches your sensors.
If you have flashed latest_en.bin in error you will need to Erase the flash and then re-flash the correct file. This will then require you setup the wifi again as per the docs.