Since no open-source software or other information about the Oregon WMR 300 USB protocol was around, I had to test and decode every single packet. Find out the detailed USB protocol here. [...]

Since back in the time when I purchased the brand-new weatherstation (sadly without a deeper research beforehand), no software running on linux was available to communicate with the Oregon WMR300, I had to reverse engineer all the protocols used. I will try to guide you through the set-up of the required software systems to communicate in this part, and go into detail on how to decode and store the received data in the next post. [...]