https://www.simhubdash.com/community-2/simhub-support/pwm-fan-issues/ All about SimHub! en-US Fri, 14 Aug 2026 04:05:36 +0000 wpForo 60 https://www.simhubdash.com/community-2/simhub-support/pwm-fan-issues/#post-3482 Wed, 13 Oct 2021 23:30:47 +0000 I have 2 PWM fans set up on an arduino mega. Using pins 11 and 12 when I apply power to the fans they spin up to max rpm and stay. Once I get into the shakeit setup screen and click test they slow down for a second the go back to max rpm. After a few minutes they will cycle from full speed to off and back every 2-3 seconds. Not sure what I'm doing wrong...

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