Hi there,
I want to control a phase ange controler from my arduino
http://docs-europe.electrocomponents.com/webdocs/002e/0900766b8002e5aa.pdf
this datasheet spesifies 250K pot 1W @ 230Vac
What digital pot can I use with this device?
D.
It's a motor so I would like full phase angle control
I have also have time critical sections in the program that halts all other processes for 180 ms or thereabout for reading, so I do not know if I can use the arduino with zero crossing ssr for phaseangle control....
D.
I will have interruptions for mesurements each loop for 180ms so every cycle will be interrupted, so I would think accurate ssr phase control will be difficult, So maybie I will just make a optoisolated R2R bridge and talk to it with an I2C chip.
D.
I will have interruptions for mesurements each loop for 180ms so every cycle will be interrupted
You're working on a 5.5Hz system?
Where on Earth are you?
i just mean that i have a while routine that halts all processing until it gets new data.... probably very poorly written but that's how it is right now
I am interfacing Smartec UTI with pt100 temp sensor and the reading takes 100ms or so. I am taking 2 readings and averaging and other parts of the code f.ex. serial Tx-Rx needed a little delay to function properly
So if you know how to capture the data in a bettter way let me know.
(the code was taken from this site, as I did not want to bother so much with learning the UTI signal interface, and it works)
I just assumed that phase angle control with zero crossing ssr will require very accurate timing to fire the ssr, and that I will not get to fire the ssr as a consecquence.
ultimatly I will control a pump (220 Vac motor) depending on the temperature using PID
I do not have a ssr lying around now and was just thinking of replacing the pot of the phase angle control of the pump with a digital one (maximum lazyness at maximum cost, minimal code)
D.