Anyone done this before? I have 9 somfy RF roller shades? Had 1 person tell me that I have to purchase a $500 controller to perform this. Hoping there is a cheaper workaround. Thanks in advance for any help.
Integrating a standalone RF system is always a challenge. I don't have an answer to your specific question, but it did get me noodling on the topic of any viable alternative approaches: Depending on the price/availability of the Somfy RF remote + your comfort with pulling one apart and tinkering, you could consider doing something similar to this:
I recently ran into the same problem while trying to get Somfy's Universal RTS Interface II (URTSI II) to work on an Irule interface using Global Cache RS232/Ip controller.
I used a female DB9 soldered to a peice of cat-5 with a crimped RJ45 connector. The pin out that worked for me was: