OK folks, I humbly ask for your help. I built my first MR16 board a while back and am finally getting to testing it.
Here's my story:
Powered up (without DMX signal connected) and all connected lights on constant.
I'm using a 12 volt regulated PS. No smoke.
Powered off and connected DMX (from DMX DIY dongle)
Powered up and no blinky flashy
Tried programming a new DMX starting address
Still no blinky flashy
Reflashed the PIC with hex from wiki, still nothing.
Now I get nothing even without DMX connected.
I'm thinking it's either the 485 chip or the 7805 voltage reg but I thought
I'd ask the experts before I start tearing into it.
http://www.christmasinkent.com/images/MR16front.JPG (http://www.christmasinkent.com/images/MR16front.JPG)
http://www.christmasinkent.com/images/MR16back.JPG (http://www.christmasinkent.com/images/MR16back.JPG)
PS: I did finally work my way through the dreaded comm port access denied issue by using Vixen 2.5.0.8 and updating to the latest FTDI driver (2.6.0.0). I testing it with my DIY DMX dongle, Lynx Express and Vixen works fine.
OK I just built another MR16 board and same deal so I'm stupid twice.
I must be missing something simple...