@60hz I don't think I have ever seen so much information for a cheap chip...!

That's a lot of stuffs to read indeed!

But..... I have to go out.... and there is A LOT to read.

have a nice evenings
I think I will try with a raspberry and see what happend!

Yes, I checked in Qlc+ and it says 30hz with this device.

So I used the same patch and tried 33.33 in metro to have 30hz... but maybe I am wrong.
And There are many "mode" also, but don't know how to apply this in pd.

No worry I am using Raspberry yes, that's why I replied to this topic.

Right now it's working ok under MacOSX, but I am sure I will have issues with a Pi 4 and all serial related stuffs... and I really like to be able to make pd communicate with other USB-DMX devices than Enttec!

I tried using Ethernet shield and arduino... After configuring a fixed ip to my arduino Mac address, I can receive my sensor data to pd!

But the project is much more complicated than I thought because I need to add a router, + an Enttec usb-dmx box to my raspberry Pi...

Wow thanks @whale-av for this new idea.
Actually I can see the cheap usb-dmx wire device with [comport], but when I connect pd to it and try to send a DMX frame, nothing happen. The same with another Eurolite USB-DMX512 PRO MK2... only Qlc+ works with those devices!

Using [comport] listening to Enttec DMX in, I can print the frame sent with the cheap usb-dmx wire...
sometimes: 126 5 198 1 0 0 $1 $2 ... 231
sometimes: 126 5 197 1 0 0 $1 $2 ... 231

But sending the same frame at 30hz do nothing.

Thanks @jameslo This is an idea I thought about, but it is way too expensive (340eur for 2 interfaces!).

I tried this cheap usb-dmx wire but I cannot send data from [comport] as Enttec does...

The DMX shield is receiving arduino sensor data and is supposed to send them to puredata on a long distance.
Ok thanks @whale-av, I will try with an ethernet shield then... But I thought a simple DMX broadcasted signal would be perfect for my need... since there is no data check etc...

Because I have DMX shield and sending Data is already working, I thought it was easier to do all in DMX...
I know very few about ethernet data but I guess I could do the same using [netrecieve] ? Then I will need a router on the Pi...

I am trying to read sensor data from 2 arduino, then send them far away on different DMX channel to puredata. Pure Data patch will then make some process and sound and finally control motors on the DMX switch.

Wow, incredible... so this hardware cannot send and receive at same time!
So when using DMX, input is fowarded to the out and that's all?

It seems it will change to output mode when you send data in, but how to return to input mode?

-> after a few time when I try to send data and reading with comport, my dmx device go crazy.

I don't understand the use of 2 channel on such a device then... Maybe I need to have another universe and another DMX interface...

Here is what I did: