My experiments so far with USB packet sniffing have already been very time consuming. Since I do not intend to use the LED channels myself, I doubt I can find the time to do this. Some modes seems to work in a completely different way than others - some modes only transmits commands when applying settings, other modes "spam" the device with commands all the time. I have not been able to figure out what is really going on with most of the LED commands. IMPORTANT: The LED functionality of this device is complicated. Additional notes are found below in the NOTES section. I have sniffed the protocol using a VirtualBox with Windows 7 and the so called "Free USB Analyzer" from HDD Software. The device connects to an internal USB connector on the motherboard. The device can also measure the rail voltages from the PSU (supplied by a SATA power connector).Įach of the six fans can be monitored (RPM measurement). 2 internal USB devices such as Corsair PSUs and CPU water coolers (acts like a hub).
COMMANDER PRO PRO
The Corsair Commander Pro is a device that can connect to I do, however, have quite a bit experience with cross-platform desktop GUI programming (mainly C++ with wxWidgets) - so if a GUI for OpenCorsairLink is needed, I might be willing to contribute if I can find the time.Īnyway, still thanks - and below are my findings regarding the protocol and workings of the Corsair Commander Pro :-) I'm an electronics engineer and programmer, but I have little to no experience in Unix/Linux system programming. Please let me know if I can be helpful in more ways. and what happens if more users are logged in at the same time, both monitoring/controlling Corsair LINK devices? Well. I think this is better than to connect/disconnect to the USB devices all the time directly. I guess a possible solution is to create a simple daemon that can run at boot time, constantly monitoring temperatures (at a set interval) and also have a small API that can be used to connect to GUI apps or panel applets, like the "MATE Sensors Applet" and similar.
That way, the temperature of a H115i or HX850i can control the fans connected to the Commander Pro.
COMMANDER PRO SOFTWARE
I know that the official LINK software is able to monitor and inform devices, such as the Corsair Commander Pro, about temperature. Oh, by the way - what is the future goal of OpenCorsairLink? I get that at the moment, it is just a small tool to set up fans and the like, with no real monitoring support. Then soon, I can have my workstation just as silent in Linux as in M$ Windows. I hope that the protocol details below are enough to implement support for this device in OpenCorsairLink. I have included a very tiny test program to show that it works. I succeeded, well almost - there is still a lot of RGB LED related stuff I have yet to figure out - but the most important things like fan control and temperature measurement are clear by now. Instead of being disappointed that there is currently no support for the Commander Pro in OpenCorsairLink, I decided to figure out the protocol myself before I post anything here on GitHub.
COMMANDER PRO PC
I use this to control various fans in my PC case. However, I also got a Corsair Commander Pro that works with Corsair LINK as well. I purchased the H115i as well as the HX850i - I guess that was a lucky choice because, as I later found out, OpenCorsairLink supports both devices already. I recently decided to build a new workstation.
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