About This Project
As an English man living in the UK, I live in a tropical climate (not!)
So only having a combination heating unit which supplies hot water (on demand) and heating controlled by a wireless thermostat and depending on the room it placed in controls the temp in that house,
problems with this system.
Wireless control looses signal all the time.
each room has different sized radiators that produce different amounts of heat with a thermostatic valve .
during the colder months heating is on 24/7 wasting energy (wasting my bloody money)
16ch relay board (using 2 relays)
3,3v to 5v conversion board made with 14.7Ohm resister ,2N 3904 transistor and number of scraps and second hand parts
Triggers & Alerts
Using the DS18B20 in each room to setup a min and max temperature in each room to trigger a secondary relay.
I have set 2 schedules 1st schedule that triggers a primary relay on and a 2nd schedule to trigger it off.
##How it works
I have linked two relays in series so the heating will only run if both relays are closed,
so if the primary scheduling relay is set to close between 18.00h and 06.00h the heating will only switch on if the secondary relay trigger point has been reached (temp below 17deg C in one of the rooms )
this is the over view so I can monitor each room temp and adjust each radiator thermostat to balance temp in the house.
easy peasy timer set up using the daily repeat
these are the triggers for the rooms max and min
Photos of the Project
the 2 relays wired in series
4x 1 wire DS18B20 ready one for each zone
##Ideas for the future
motorised valves on each of the radiators so I can adjust each one.
wall mounted display to have quick and easy access to controls and monitoring.
notification alarm when the wife even thinks about turning the heating up. (or even a small electric shock if she touches the controls )