Tag Archives: fan

YOUYUE 858D+ hotair station — BLDC Fan-speed mod

Posted on October 23, 2015 by robert

I’ve finally forced myself to layout a small board. It’s been far too long anyway. It consists of these building blocks: reference voltage, comparator, RC low-pass, gain. There are better methods for the job, e.g. using a digital one-shot to … Continue reading →

Posted in Electronics. | Tagged , , , , , , | 24 Comments

Small project #9 — PC-fan tacho-signal spoofer

Posted on April 8, 2014 by robert

Some time ago I got an email. Yes it still happens. Someone was having a problem with computer / server fans. These things can get insanely loud, think vacuum cleaner on maximum power. Some of the 40x40mm models spin up … Continue reading →

Posted in Electronics. | Tagged , , , , | 2 Comments

YOUYUE 858D+ hotair station — reverse engineering #6

Posted on March 10, 2014 by robert

Adding some more stuff is always fun.

Posted in Arduino., Soldering & PCBs. | Tagged , , , , , | 35 Comments