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PWM support?

Posted: Mon Mar 20, 2023 12:26 pm
by JoDaNl
Hi,

I've been working on an alternative 'brick' implementation using an ESP32. See : https://github.com/JoDaNl/BookesBrick
Software is converging an I'm running my fridge-based temperature chamber with this setup.

I'm now considering modifying my mashtun. This is an ' all-in'one' 30L kettle...with a horrible built-in controller...hence my wish to convert this to the Bierbot-ecosystem.
The kettle has 2 electric heating elements...which I'm planning to control by using 2 Solid-State-Relays.
Using SSR's would also open the way to control the heating by PWM control.

This brings me to the question(s)
- is PWM officially supported?..I do see in the bierbot API (a_number_epower_0).
- if so, has anybody practical experiences with this ?

Jos.

Re: PWM support?

Posted: Mon Mar 20, 2023 12:32 pm
by Bernhard
Hi Jos,

thanks for reaching out. Your assumption is correct! Currently, PWM is not (yet) supported. You can vote for the PWM feature here: https://bricks.bierbot.com/#/features.

In the meantime you can use your SSR in relay mode (just full on or complete off) - which also saves you a lot of cooling effort.

Cheers,
Bernhard.

Re: PWM support?

Posted: Mon Mar 20, 2023 9:09 pm
by JoDaNl
HI Bernard,

Thanks for the swift reply...appreciated.
I voted for PWM!

Regards,
Jos.