Dimmer

[sayzer]

Hi Steve,

As you well know, it took about a month for me to figure out that this line does not work:

@ device intrc_osc_noclkout, wdt_on, mclr_off, protect_off

It should be either like
@ device pic12F675, intrc_osc_noclkout, wdt_on, mclr_off, protect_off
or
like

@ DEVICE pic12F675, INTRC_OSC_NOCLKOUT
@ DEVICE pic12F675, WDT_ON
@ DEVICE pic12F675, PWRT_ON
@ DEVICE pic12F675, MCLR_OFF
@ DEVICE pic12F675, BOD_ON
@ DEVICE pic12F675, CPD_OFF
@ DEVICE pic12F675, PROTECT_OFF

[Atom058]

Thanks guys! I knew I would be embarrased by the solution and I was right!

OK, Now I have made the circuit change and have made the switch changes. I get the 5V outputs on pins GPIO.0 and .1 which go low when I press the up or down buttons. I do not, however, get any output from GPIO.2 which is the triac trigger. My guess is that the problem lies in the ACDetect routine. I see in previous posts that there were many references to this routine and it went through several revisions. Can someone verify that I have the correct routine?

I have attached the code as a text file and the circuit design as a pdf. Would appreciate comments.

Thanks again! Atom058

[Atom058]

Hello again - Did I stump everyone? Surely someone has a comment...

Would really like to get this working!

Thanks in advance! Atom058

[mister_e]

You have the right version.

It's suppose to work unless you have some hardware issue OR device prograemmer issue.

[Atom058]

Mister-e - Thanks! I will go over my circuit again. It helps knowing that the code I am trying to run is the correct version - I can focus my attention elsewhere. If you (or anyone else) can offer some troubleshooting ideas, they would be appreciated.

Atom058

[Atom058]

Well, I did find (part of) my problem - It was a bad solder at GPIO.4 so it was never seeing the zero crossing. Having fixed that, I now can dim the light up and down just like it is supposed to. However, (bet you saw this coming) when it is between full on and full off, it flickers randomly. The dimming works but it flickers until it gets to full on or full off. I am sure that this is a timing issue but can't see where to get at it. I am at 60 Hz, 120V. I am using the code as previously posted.

I know that some of you (Mister_e) feel like you are beating a dead horse with this dimmer project, but if you can help me get through this, I will post my final code, circuit diagrams and parts lists so that anyone can build this and you will never have to deal with it again (hopefully!).

Thanks (Mister_e)!

Atom058

[mister_e]

interesting. to me it's sounds like a an delay offset in the Zero Crossing. Done by the transformer AND the 470uF cap.

Can be solved in software.

Give me the transformer information, part #, voltage etc. I will work on this.