Sending Hex codes over serial


I’m trying to control a DVR with a GC WF2SL.

If I send the command FF 55 09 (Hex) using iTest my DVR responds as it should

But I can’t figure out how to make Roomie do the same.

I’ve made several custom devices using the DDK. For this one I’ve set method to binary and as code I’ve entered FF 55 09.

Obviously I’m doing something wrong :slight_smile:

I already tried binary-ack and lineio and FF5509 (without spaces)

Who can give me some pointers?


Here’s an example of binary notation from the DDK:


To use raw binary without “\x”, you’d need to use Xcode. So the simpler method is usually to use a string type and then just use the \x escape method.

Thank you.

Wow, that did the trick!

Thanks a lot :slight_smile: