Dimmer 4ch

michelemancini2 · ‎2016-11-12

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?

Benoit RENARD · ‎2016-12-01

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