yea just the resistors. Heres a post in the beta tester stuff. I had received a ver 1 & 2 while testing. I only built the ver 2. The post can be found at You are not allowed to view links.
Register or
LoginRe: Beta-Portable Wired/Wireless DMX Tester (See first post for specs and features)
« Reply #208 on: October 19, 2011, »
Quote
FYI for any of you beta testers that were given Rev1 boards. There is a mod that needs to be done to add two resistors to the control side of the board. The two resistors needed are part of the BOM.
Oh, by the way, the symptoms associated with not having these resistors in place is that it will not send DMX out via the RJ45 jack when there's no Ex/Rx installed. So it's only an issue without the wireless option.
I've posted a photo that shows how to identify the Rev1 board as well as the mod. Rev2 boards do not required this mod.