Posts by ibmbos

Now I am 80% assured that the software has some kind of problem, at least some compatibility problem with some lights..
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I got out my years-old atmega32 dev-board, wired with my enc28j60 module, wired with my 485 module, connected with my USB-ISP, burned the hex file, set the fuse,
repowered the whole system, get connected with Router and the dmx light, run Freestyler, -----------Magic? NO!! Problem still exist, output is still "distorted"...

I don't have an oscilloscope..........
When I change back to use my udmx controller, all OK..... The light runs smoothly...

OK. picture attached. Back side no componet, only some routing line.
(I still have 4 pcs of this PC board. If anyone have interest to test, just pay the shipping cost and I can send to him.)

I used the schematic of Morpheus238's two-way board, both mega32 and mega644P can be mounted.
(I only changed the RJ45 port. this should be no problem, ethernet input is good.)

And, even I set the Fuses same as wiki, the output is still "distorted".......
I am wonder why......
Best regards,

Maurice

Hi, Stefan, thanks for your reply.
For atmage32A, I used the file downloaded on this page: http://www.dmxcontrol.de/wiki/Art-Net-Node_f%C3%BCr_25_Euro
(In this page here is also a weblink for mega644P source file, from there I downloaded the files for my mega644P.)
I tried both the hex file directly downloaded and the hex-file compiled by me with the source code.

Fuse bit for mega32a, I only changed the clock bits----CKSEL=1111, SUT=11
For mega644P, I also set CKSEL=1111, SUT=11; and "Divide Clock by 8" not selected, Other bits remain not changed.

I tested on two unfamous stage lights---Not from same manufacturer. They both work good with my udmx usbdmx controller.
The software I use is Freestyler latest version.
DMXworkshop can recognise the boards.
thanks.

Maurice

This project seems to have VERY BIG Fault. Input is good, but the dmx output data is distorted. The channel value between 128 to 254 are missed. When you set RED channel 250, the channel is black. Set green value 130, it is black.
Only channel value under 128 is correctly shown.
So, this project seems of little use in practice.
I tested on both atmega32 and atmega644P. Cost me lot of time to find.......