Hi everyone.
I try to find out what is better for me to start my project. I have heater panels in my home (like this https://www.screwfix.com/p/eezi-heat-wall-mounted-panel-heater-400w/6779h) and i want to save energy. So I saw that the PID library is suitable for this project. I saw also SPI but .....i don't know.
The biggest problem for me is to understand if i have to use NPN or Digital potentiometer for this job. I will use Arduino or wemos d1.
Any help will be great !
Thnx.
PID and SPI are not alternatves.
PID is a system for working out the value to use to control something.
SPI is a system of communication.
...R
This is a mains heater, so you need an opto-isolated SSR or similar to switch it.
Furthermore it already has a mechanical thermostat for controlling it - I presume you want to remotely
control it (ie set thermostat to max and switch power into the panel externally?)
The biggest problem for me is to understand if i have to use NPN or Digital potentiometer for this job.
Neither seem appropriate. Since mains appliances run at lethal voltages, I would suggest
doing more research about how to safely control mains appliances. A SSR designed
for mains is basically like driving an opto-isolator, which is an LED electrically.
Mechanical relays are also possible, but are more complex to drive (the NPN might then be
used to drive the relay).
Ok i understand. But is SSR relay able to adjust the energy flow like a digital potentiometer?
hwa_rang098tkd:
Ok i understand. But is SSR relay able to adjust the energy flow like a digital potentiometer?
No, but you certainly wouldn't want to control a heater that way, because using a potentiometer
in series with a 400W heater would require a potentiometer rated at 100W.
You turn it on and off to control average power, just like the mechanical thermostat does.
Thx . I think about it