FanControl x735-v2.5-C++

C++ implementation of the x735 fan control software for the raspberry pi to control and read the installed fan speed.

First things first: How can I get it?

git clone https://github.com/schorsch1976/x735-v2.5-C-.git.

This is my public (but not main repository). It is used to publish released versions and for bug/issue tracking.

Why rewritten?

My goal was to use a "vanilla" debian bullyeye on the raspberry pi4 but still have the fan not running on maximum speed. The python3 libraries used at the original and the forked version from thorkseng dont work on a vanilla debian system.

So: One of the most fundamental and widespread programming languages is C/C++ was used.

Used libraries

x735-v2.5-C++ uses the following third-party libraries (in 3rdparty/):

libgpiod to read and control the GPIOs upstream

Used tools

cmake 3.13
gcc >= 8.2 or clang >=6

OK, but how can I compile `x735-v2.5-C++` first?

It's not hard to compile x735-v2.5-C++ yourself though:

sudo apt install cmake g++ build-essential libgpiod-dev
git clone https://github.com/schorsch1976/x735-v2.5-C-.git
cd x735-v2.5-C-
bash install.sh

Now the binaries are installed in /usr/local/bin. Also the service file is installed and the fan should already be running.

OK, How to read the fan speed?

georg@rpi4-rt:~$ x735-fanspeed 
RPM: 2007

Does it use much CPU power? My Pi4 is already sweating heavily ...

OK, but how can i get rid of it again?

...
cd x735-v2.5-C++
bash uninstall.sh

schorsch1976/x735-v2.5-C-