Need some advice.

[mister_e]

You may try to switch to asm interrupt or Darrel's instant interrupt to see if it works better.

A real schematic would help...

To generate 10uSec with PAUSEUS, you need at least a 10MHz crystal. If you're using a 4MHz, you'll need to use asm NOP or GOTO

A scope is handy for those things. 1 channel on the Main AC, the other on the PIC output... now you see if you're really in-synch. Be careful if you do that, unless we might see some smoke messages

[cphillips82]

my interup seems to work fine it just that the owin owout commands seem to really take alot of time and the interupts are missed in the process. i'll try to draw up a schematic.

[cphillips82]

here is a quick diagram, I know thats not a moc3021

[cphillips82]

here abit smaller

[mister_e]

my interup seems to work fine it just that the owin owout commands seem to really take alot of time and the interupts are missed in the process. i'll try to draw up a schematic.

This is why i've suggested to use Darrel's instant interrupts

[Acetronics2]

Hi,

The MOC 3041 ( and not 3021 ...) permitted to avoid all the zero detection AND the interrupts ...

burst mode is really not a problem with heating systems ...

Alain

[cphillips82]

not too sure what you mean "burst mode" is that like on 1 sec off 4 secon = 20% heat?. I'll try instant interupt but I'm a little affraid of asm..... I hate it!

[cphillips82]

and let the fun begin! can somebody tell me what error: variable wsave3 request 416 beyond ram_end 79 means? I have 3 errors like this in my first attempt at compiling. I installed mpasm and the include files for instant interupt.

[Acetronics2]

not too sure what you mean "burst mode" is that like on 1 sec off 4 secon = 20% heat?. I'll try instant interupt but I'm a little affraid of asm..... I hate it!

Hi,

this is it ... in the end BUT, exactly ... the half waves are "full" , THANKS to the MOC 3041.

for your example you will have 100 half waves ON ( always an integer ! ) @ 50 Hz = 1s followed by 400 "half waves OFF" @ 50 Hz = 4 sec ...


as the DS1820 needs ~ 750 ms for conversion, just fix your regulator period to 1 sec ( in your example .2sec ON and .8 sec OFF ) and you'll have a .5% resolution in power ...

far more than you need ... but very easy for your regulating soft calculations.

Alain

[sayzer]

Why not just skip the busy state of the temp conversation??

If the temp conversation is in progress, do not wait, just pass it.