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This python application sets a Radio Thermostat WiFi thermostat back when pin #15 (BCM numbering) on the Raspberry PI (named AlarmPi) goes high and returns it to the currently running program when the pin #17 (also BCM numbering) goes high.
I have this connected to a relay board in my alarm system box. The relay board has three contacts ... a common, a normally open and a normally closed contact. When the alarm system is armed, the relay closes and the normally open contact is connected to the common / the normally closed contact is disconnected from the common. When the alarm system is disarmed, the normally closed contact is conneced to the common and the normally open contact is disconnected from it. The Raspberry pi pin #15 is conntected to the normally open contact and pin #17 is connected to the normally closed contact.
When the alarm is triggered, the relay will flip off and on. I use the gpiozero library to sense when the pins are held down for a number of seconds. This prevents the AlarmPi from constantly trying to change the thermostat when the alarm is tripped.
I also found that the thermostat sometimes will fail in the call to figure out the lowest thermostat setting for the day. I have the code trying to figure it out a number of times with a delay between them. If it fails that number of times, the AlarmPi will
text my phone a message to say that it was not able to do the setback functionality so that I can do it via the thermostat app on my smartphone.
Things you will need to cusomize:
- Create a twilio_account_settings.py file with the following values defined:
TWILIO_ACT TWILIO_AUTH_TOKEN CELL_PHONE FROM_PHONE
All these values (except your cell phone number) will be created when you sign up for your twilio account.
- Insert your own thermostat name in the TSTAT_IP variable in wg_radio_thermostat.py