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AVR Atmega dehumidifier controller board update

Posted on Thursday, September 12th, 2013 in AVR by DP

dehumidifier_atmega_02

Davide Gironi posted an update on his AVR Atmega dehumidifier controller board we covered previously:

The main issue that i’ve fixed is the microcontroller crash, that happens sometimes. I’ve noticed that sometimes the controller stop running, crash or doesn’t works as expected.
After some experimets, i’ve noticed that probem was due to Electromagnetic Interference (EMI), EMI happens when the compressor and fan starts or stops.

This entry was posted on Thursday, September 12th, 2013 at 11:00 am and is filed under AVR. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “AVR Atmega dehumidifier controller board update”

  1. Raj says:

    A proper way for preventing EMI impacting your circuit is using an optocoupler for relay and an rc snubber circuit on your ac load.

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