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keth
Joined: 25 Oct 2007
Posts: 2
Location: Philippines
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 Posted: Tue Oct 30, 2007 1:24 am Post subject: problem in controlling the triac for lamp dimming |
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Hello 
i got a difficulty starting on the codes to control the triac for lamp dimming...the hardware was done and and all the pins were connected (gpo0=triac, gp4=sync, gp5=switch)...the output is ok only that i could not start to dim...
any suggestions?!! thanxxxxxxxxxxxx... |
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armo
Joined: 03 Jan 2007
Posts: 4
Location: Brasil
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| Posted: Mon Nov 05, 2007 11:17 pm Post subject: Re: problem in controlling the triac for lamp dimming |
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| keth wrote: | Hello
i got a difficulty starting on the codes to control the triac for lamp dimming...the hardware was done and and all the pins were connected (gpo0=triac, gp4=sync, gp5=switch)...the output is ok only that i could not start to dim...
any suggestions?!! thanxxxxxxxxxxxx... |
Hi, are you using some sort of a zero crossing detector? Thatīs the only way that I could make a dimmer br controled by a PIC 12F629
Alfredo |
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keth
Joined: 25 Oct 2007
Posts: 2
Location: Philippines
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| Posted: Tue Nov 06, 2007 12:47 am Post subject: yes i have the zero detect at gp4 |
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| yes and it is connected on gp4, i understand that i have to trigger the triac at a certain point, but i dont know how to generate the code? i saw some similar programs but is too complicated for me to understand and they are using some table.. could you help me with the code? just a simple dimming..thnnxxxx:-) |
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