Manual PWM controller board for powered fan splitters
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
pwmcontroller-cache.pretty
.gitignore
BOM.ods
BOM.pdf
LICENSE
README.rst
fp-lib-table
pwmcontroller-cache.bak
pwmcontroller-cache.dcm
pwmcontroller-cache.lib
pwmcontroller.bak
pwmcontroller.dcm
pwmcontroller.kicad_pcb
pwmcontroller.kicad_pcb-bak
pwmcontroller.lib
pwmcontroller.net
pwmcontroller.png
pwmcontroller.pro
pwmcontroller.sch

README.rst

PWM Controller

This repository contains the hardware design files (for use with KiCad) that will create a PWM controller board. The intent here is to plug this in between a motherboard 4-pin fan header and a powered fan splitter, like the Silverstone CPF04 or Swiftech 8W-PWM-SPL-ST. The pwm signal is generated by the 555 timer on the board and adjusted with the on pcb potentiometer, 12v fan power from the motherboard is used solely for the DC/DC converter and 555 timer. No power pins are connected on the output fan header.

A write up documenting this project's development can be found here:

https://blog.kortar.org/?p=437

https://raw.githubusercontent.com/mtreinish/pwmcontroller/master/pwmcontroller.png