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PWM support? - Printable Version

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+--- Thread: PWM support? (/showthread.php?tid=6749)

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PWM support? - luis15pt - 09-19-2024

I have a  KC868-A16 would it be possible to control a standard computer fan 12v that has PWM ? i know there are some GPIO ports, im assuming i have to configure one of these as PWM, how do i find out which ones they represent on the actual board? The next question is how do i monitor the RPM form the fan and where do i connect and configure it ?
[Image: rRuk1Q4.png]
[Image: sh-07-sensors.jpg]

RE: PWM support? - admin - 09-19-2024

gpio32,gpio33,gpio14 support PWM output, but i have not tested, you can try to use it.

RE: PWM support? - luis15pt - 09-20-2024

(09-19-2024, 11:16 PM)admin Wrote: gpio32,gpio33,gpio14 support PWM output, but i have not tested, you can try to use it.

do you have a schematic for which outputs those are on the pcb?

RE: PWM support? - admin - 09-20-2024

[Image: sh-07-sensors.jpg]
See this YELLOW region.

RE: PWM support? - luis15pt - 09-20-2024

(09-20-2024, 11:50 AM)admin Wrote: [Image: sh-07-sensors.jpg]
See this YELLOW region.

Sorry if my message wasnt clear, how do i know which gpio32,gpio33,gpio14 connectors are? 

So i was looking for something like HT1 is gpio14, HT2 is gpio32 and HT3 is gpio33 ? pio33,gpio14

RE: PWM support? - admin - 09-20-2024

HT1:GPIO32
HT2:GPIO33
HT3:GPIO14
here is schematic of KC868-A16: https://www.kincony.com/download/KC868-A16-schematic.pdf

RE: PWM support? - luis15pt - 09-20-2024

I kind of got it to work, so i can turn on the fan using this config:
[Image: nBNpOCv.png]

But the issue is the fan will only turn on at 100% speed at around halfway of the slider, and i can not control the speed, is there something else i need to do? As currently i can only have it at 0% or 100% speed. Ive tried PWM 1 to 5 only 1 seems to work.

Also in regards to the RPM counter, i dont think the counter is working as its an increasing counter, so i might have to use something else ? I tried counter 2 to 5 same issue. Is there a way to have a RPM counter?
[Image: pK0RcAO.png]

RE: PWM support? - admin - 09-21-2024

Sorry, i am not used PWM in Tasmota. i suggest you post your questions to Tasmota forum.

RE: PWM support? - luis15pt - 09-22-2024

What if i used stock firmware will that work ? or ESPhome?

RE: PWM support? - admin - 09-22-2024

KCS not support PWM output. you can try to use by ESPHome.