EMC2101 - Can't change the speed of the fan(s)

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jglogau
 
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EMC2101 - Can't change the speed of the fan(s)

Post by jglogau »

I can't change the speed of the fans I am using, which is a Evercool.

The wiring is right, but maybe I've burned something out.

Used a number of EMC2101 but there's no difference. I've used the standard example and the LUT versions, doesn't make a difference, all one high speed.

What makes me very concerned is that when I started I believe the basic code did change the speed. I hope I didn't burn something out. I have different fans to try but I think I've bricked 4 EMC2101

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Franklin97355
 
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Re: EMC2101 - Can't change the speed of the fan(s)

Post by Franklin97355 »

How do you connect and what do you connect the EMC to? What code are you using and can you post pictures? Thanks.

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jglogau
 
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Re: EMC2101 - Can't change the speed of the fan(s)

Post by jglogau »

The main processor is the ESP32S3 with screen. There is a multiplexer attached because there is the address conflict with the 2 EMC2101's.

When the power is on for the EMC2101's one of the fans is low and the other is high but they both are spinning at a high speed.

I've also attached the code, besides the pictures.

Thank you for your assistance.
Attachments
IMG-0942.jpg
IMG-0942.jpg (207.17 KiB) Viewed 174 times
Sensors.py
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IMG-0943.jpg
IMG-0943.jpg (132.96 KiB) Viewed 174 times

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jglogau
 
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Re: EMC2101 - Can't change the speed of the fan(s)

Post by jglogau »

Hi:

Still stuck, can't get the sample CircuitPython code to change the speed of my fans.

I have tested the fans with a knob based module and I can change the speed, so its not the PWM fans.

Must be doing something wrong but can't figure out what it is.

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adafruit_support_carter
 
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Re: EMC2101 - Can't change the speed of the fan(s)

Post by adafruit_support_carter »

The example code would need to be adapted for use with the I2C muxer.

Try connecting just a single EMC2101 directly the Feather ESP32S3 (don't use the muxer) and then run the example code:
https://github.com/adafruit/Adafruit_Ci ... pletest.py

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