arduino dmx art-net
Credits: Original Code: Christoph Guillermet (karistouf) Nice updates and performance improvement by: David Von Schoorisse, MSberger
Emit to an arduino hardware, or receive data from it over network with vvvv's DMX (artnet) nodes !
Those scripts will work with arduino 1.0, and any arduino compatible with an ethernet or wifi shield.
Please notice that ethernet shields are using pins to communicate over network data to arduino. Setting digital in setup or trying to write on them will block the script. Have a look to your arduino documentation first about those used pins.
ArtNet receiver v3.1: performances improvement by MSBerger for arduino software 1.05
ArtNet receiver SoftPwm: script for arduino 23, using software pwm to create false pwm on all io pins
ArtNet sender: you can send artnet data from your arduino over network in artnet dmx packet. Sending values of sensors and buttons will be much more easier than all osc or firmata solutions ;-)
Kasper Kamperman has adapted my artnet sender script to work with the arduino software 1.0. Its included in the ArtNet sender 10 folder.
Folder OLD contains previous sketches versions
This reminds me of getting back to a very important project ...
great thanks ¡¡
hi hi ;-)
added Kasper's adaptation for arduino software 1.0.
I m not using this version ( it will take a while before this arduino new software 1.0 be stable) but i m very happy of this contribution.
Being new to the arduino world i have a couple of questions.
1-When setting up the Artnet Node in vvvv to communicate with an arduino UNO
should I set it up with an ordinary spread of 512, and then for the sender sketch, Artnet channel 13,12,11,10,9,8,6,5 and 3 would controll the output pins on the arduinoUNO board?
2-And for the reciver Sketch the same has to be done but diffrent channel
to pin mapping?
3-And for the diffrent types of inputs/outputs like digital,analog or PWM?
PWM and analog would be like a fader with value from 0 TO 1, but digital would be a toggle, value 0 OR 1?
4- As im typing my questions I see that i really would love if someone
could make a patch I could look at =)
hi, sorry for delay. Hollydays...
about your question this has nothing to do with patches:
you have to pick up values you want from the artnet array inside the sketch and distribute them to your PWM like shown at the end of the reception sketch:
//stuff to do on PWM or whatever
analogWrite(3,buffer_dmx); analogWrite(5,buffer_dmx); analogWrite(6,buffer_dmx);
if you want to write value of channel 7 to PWM 3 its easy:
about digitals, you need to make a condition, like:
if you want to control more than 6 PWM consider using softPWM lib. This means some coding in arduino in IDE and basic adaptation of the sketches
How do i select the subnet and universe?
just edit the arduino script, there is subnet and universe as variable
I'm fairly new to Arduino and I'm running into an issue with Receiver. I'm using Sender10 fine.
I'm having difficulty with the UDP libraries. I'm getting messages from the IDE such as "The Udp class in the Ethernet library has been renamed to EthernetUdp" If I change the udp.h reference to EthernetUdp.h, I get errors on the Read statement.
Can you tell me if the code is using old library references or if I need to import the correct libraries? If so, can you point me to the correct place to download the libraries?
Thanks for your help!
Keep up the good work, Christof!
well, its not me this time ;-) its david ;-)
Hi again. Im having proplem to make this work, and its probably my mistake.
But a quick question. If i upload the code without doing any modifications to it to the arduino Uno and set the ip of my computer to 192.168.1.100 shouldnt it be up and running immediatly.
EDIT: I got this working with the 0023 version (V2), But still no luck with v3 for arduino 1.0
Exelent work, i love the idea of sending artnet and getting PWM out to control something! :)
I will try to include the servo library to do a small moving ligth :)
Guys please check this out...
it a 4 universe from an arduino mega, but its slow if you use more 2 or more,,, the guy who made it will test it with arduino due, but he need to recompile the dmx library in order to do it, whell on this thread this is already done. so it would be great if you can get it touch to see if we can get 4 outputs from arduino due at 44hz, that will be crazy :)
did anybody use v3 for arduino >=1.0 and compared performance with v2 ?
I experienced that performance of v3 is much lower compared to v2.
In fact refresh/framerate of the arduino (tested with uno and mega 2560) with v3 is so low that it is not really usable.
The same artnet environment with v2 looks fine !?
The difference in performance is so big that i doubt that is only a problem with the new UDB library in arduino 1.0 ... maybe there is a fundemental problem/mistake in the sketch !?
Unfortunately my arduino/network knowledge is not good enough to be able to debug.
Any ideas/solutions out there ? Karistouf ?
... found the problem.
The performance killer was setting all buffer sizes to ""UDP_TX_PACKET_MAX_SIZE" (don´t know how big this is). I reduced this to 768 (more than big enough for the max packet size of artnet) and now performance even "feels" better than in the v2 version.
... i hope reducing/fixing the buffer size to 768 does not cause other problems ... but for me it is working fine.
Testers, feedback, improvements of course are very welcome.
The modified sketch that i named v3.1. can be downloaded here:artnet-arduino-set-v3.1
Besides the buffer size i changed some more (minor) things, that made sense to me !?
Here a little "Change Log" for my version v3.1:
Hello, I would like to know how to use ASYNCLABS Yellow Jackets (WiFi) instead of Ethernet Shield.
Can I send a floating value through ARTnet to control something? I wish to control the position of two steper motors in real time. I tried with RS232 but it is too slow, about 20 values/sec. through serial - 20 seconds for a single rotation...
In the attached test patch I want to send integer values from 100 to 500 corresponding with a 400 steps - a full rotation of the stepper. I can not receive it back throug DMX receiver nor through RS232.
In the arduino code I enabled the Serial feedback through RS232 node and it is included in the patch. Maybe I'm missing something here...
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