DIY PWM Control Relay for PC Pumps & Fans

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Do All The Things !

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Published on January 13, 2024 12:00:00 AM ● Video Link: https://www.youtube.com/watch?v=VavfwKoRzRU

Duration: 29:13

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Years ago I built a footswitch mosfet relay box for watercooling pumps,
Today, I add PWM speed control with a home brew circuit

0:00 - The Current Control Box
1:40 - The Prototype
2:09 - What is PWM, and how it works
3:22 - The Square Wave
4:08 - Some Details for SwitchMode
5:03 - PWM Generator Schematic
12:06 - Schmitt Trigger Packages
14:37 - Control Box Mosfet Relay
16:26 - The Circuit Layout
17:00 - Build Timelapse
17:06 - Testing the Circuit
18:00 - Prep & Reworking
21:15 - Fab & Pre Wiring
23:45 - Circuit Installation
24:50 - Re Assembly
25:33 - Testing & The Footswitch
26:17 - Using the Molex
27:55 - Conclusions & Solutions