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michelemancini2
michelemancini2
Associate III
November 12, 2016
Question

Dimmer 4ch

  • November 12, 2016
  • 1 reply
  • 607 views
Posted on November 12, 2016 at 15:57

I would like to drive 4ch dimmer triac with input sync zero crossing.

I want to use the timer device of stm32.

How I do initialize the timer for drive 4 ch triac with input trigger sync zero crossing?
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    1 reply

    Benoit RENARD
    Benoit RENARD
    Visitor II
    December 1, 2016
    Posted on December 01, 2016 at 11:36

    Hello Michele,

    Could you please detail your question:

    - what is ch4 dimmer ?

    - You mean 4 Triacs with a load for each, triggered by a single STM32 signal (and then a single timer) ?

    - Confirm that you want to use the zero crossing to drive the Triac in phase-shift ?

    In a first approach, I can suggest you to take few minutes on the 2 following demoboard firmware that perform phase-shift controls of Triacs. This is for STM8 MCU, but syntaxe will be close. You will find these firmware in ST.com for free.

    STEVAL-IHM029V2 => for Vaccum cleaner

    STEVAL-ILD004V2 => for light dimmer.

    Hope it can help,

    Thank you

    Best Regards

    Benoit

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