If you have found the GrafiK Eye strial protocol difficult you must not have much experience with serial protocols or serial commands. It is a very simple and easy protocol to use, but yes, Homeworks, Radio Ra, Grafik Eye have different serial protocols and strings for one can not be used for the other. However, post and example, ask questions and you may find that many here, myself included, would be more than happy to help.
I am no expert but I have some experience with RS-232 control and I have sent serial commands to a Grafik Eye at least once in my life. However, my arrogance knows no limits and on a DIY board I prefer to help someone do something themselves to just giving them the answer. Why don't you post an example or explain where in the protocol you are confused. Interpreting serial protocols is a skill and this may not be the last serial device and protocol you need to translate. Or I could just write that ":A1\
" will send a preset 1 recall command; :A16\
will recall preset 16. ": D1\\x0D" is dim and ":B10Dh" is brighten No space is needed but HTML added an icon when I wrote
so I edited it to the readable :\\x20D