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Project AVR Home Automation

#1 March 20, 2013 11:38:29 by brainless

Project AVR Home Automation

Hi David,

just browsed over your Home Automation project, that's cool stuff mate!!!
I am wondering how you made the AVR NetIO to be able to control DMX?
making a DMX controller with a NetIO board brings up a hell of ideas for me.
wold be nice if you could describe a bit how you made the DMX hardware part.

Thanks
Frank

#2 March 20, 2013 15:42:58 by david.eickhoff

Project AVR Home Automation

Actually, the reembox is the outcome of this prototype which is planned to be OpenSource in the next weeks. Then you can check the electronics on this project or just order such a board and make one of your own..

To answer your question, the DMX part is based on this small guy:
MAX 485 ECPA

#3 March 21, 2013 08:38:18 by brainless

Project AVR Home Automation

OK, got it, you replace the RS232 chip with the RS485 one.
but what about the firmware side? I guess the AVR NetIO will not be able to send RS485 commands by default.
especially the DMX protocoll would have to be implemented somehow.

I think I'll wait for teh Reembox release and check the description then.
actually I have enough to play with the AVR I have. :-)

Thanks!
/Frank

#4 March 24, 2013 11:45:56 by david.eickhoff

Project AVR Home Automation

we use ethersex as a firmware, that includes the dmx stuff

#5 March 26, 2013 09:43:06 by brainless

Project AVR Home Automation


Hi David,

Thanks for all the time you spend for this!

I now ordered a new NetIO and some spare controller chips.
I guess I toast one or two while trying to flash Ethersex. :-)
But that's not the point for here…

I checked your reembox and AVR Home Automation configurations,
and I wonder if it would somehow be possible to add a master dimmer for the RGB faders.
so to say to have one fader to control the maxValue of the RGB faders.
I could not find something for that, but I am also new to all the stuff here.

So, Is that possible to make?

Regards
Frank

#6 March 26, 2013 12:28:44 by david.eickhoff

Project AVR Home Automation

sliders can change multiple values. for example “dmx set 1 1 {value} {value} {value}”
but this would change them all to the same value (not actually dimming the current color)

I think such a function needs to be implemented in ethersex directly, you can easily implement a new module which
could be used for this I guess. Jonas for example implemented the fxslot extension and this what quite straight forward ( http://www.ethersex.de/index.php/DMX_FXSlot )..

#7 March 27, 2013 03:45:21 by brainless

Project AVR Home Automation

well, maybe a developer can do this. :-)
all I can develop are some formulas in Excel or a dos batch file to do some things, but that's it for me.
that's why I came to teh idea with a variable as used in batch files.

but if it's not possible then I can also live without that. ;-)

Thanks!