Tasmota thermostat

This is simple thermostat specifically for the SonOFF NSPanel not the pro version. It is based on the Tasmota firmware and uses the built-in temperature sensor and relay to control the temperature in a room.

Features

• Set the desired temperature
• control the relay to turn on/off the heater (L1)
• Display local outside temperature fetched from open-meteo.com

Installation

You need to install tasmota on the device first.

Video tutorial: https://www.youtube.com/watch?v=sCrdiCzxMOQ

2. Upload the autoexec.be file found in this repository. You can start a webserver with the following command if you have python3 installed:

python3 -m http.server

Then just note the IP address and port number and use it in the following command into the tasomta console: Note that you need to check the variables in autoexec.be and adjust them to your needs, for example the location of the outside temperature. You can re-upload the file after changing it.

Backlog UrlFetch http://192.168.1.6:8000/autoexec.be; Restart 1

After reboot, use the following to flash the display in the console:

FlashNextion http://192.168.1.6:8000/nsx.tft

Configuration

The temperature sensor in the SonOFF NSPanel is not very accurate. If you enter this command in the console, you improve it bit. Not going to be berfect but better.

ADCParam1 2,12400,8800,3950

or this is a new one which is even better:

AdcParam1 2,12000,9900,3950

The panel has two physical buttons which are used to set the desired temperature (touch also works of course) To avoid the default behaviour of the buttons controlling the power outputs, you can enter this command in the console:

SetOption73 1

other references

The Panel has a NX4832F035_011C screen and the following instructionset was used in the autoexec.be file:

https://nextion.tech/instruction-set/

Tasmota flashing commands (from the youtube video)

esptool.py flash_id
esptool.py read_flash 0x0 0x400000 nspanel.bin

Template (from https://templates.blakadder.com/sonoff_NSPanel.html)

{"NAME":"NSPanel","GPIO":[0,0,0,0,3872,0,0,0,0,0,32,0,0,0,0,225,0,480,224,1,0,0,0,33,0,0,0,0,0,0,0,0,0,0,4736,0],"FLAG":0,"BASE":1,"CMND":"ADCParam1 2,11200,10000,3950 | Sleep 0 | BuzzerPWM 1"}