@60hz Ahhh..... "computer" is the RPI...... I thought it was your laptop and the shield was on the RPI...... confused.... sorry.
David.

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!

@60hz When you send at 30Hz how are you refresing.
I would expect 40Hz....... something like this.......
David.

If you can get the RPI to use a virtual driver for the cheap dongle that would be good..... and worth a tutorial.

ALSO.....!!!! maybe you need to terminate the DMX line....... stop reflections on the cable....!
ALSO.....!!!! maybe a powered hub for the USB would help.

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.

@60hz I don't think I have ever seen so much information for a cheap chip...!
https://www.google.co.uk/url?esrc=s&q=&rct=j&sa=U&url=https://ftdichip.com/wp-content/uploads/2020/08/DS_FT232R.pdf&ved=2ahUKEwjTp7iV_8f9AhWSSKQEHdRNAG4QFnoECAYQAg&usg=AOvVaw1OtJDl14e0NRZCxEHMWxyg
..... links to a PDF.
Appendix A has links that tell you how to assign it to a comport....... AN 107
But..... I have to go out.... and there is A LOT to read.
Have fun....
David.

@60hz P.S. you might have a problem with Apple's own FTDI driver...... which of course you will not have on the RPI........ https://www.qlcplus.org/docs/html_en_EN/disable_apple_ftdi_driver.html
if you are trying to use another (virtual) driver.
David.
(Gone)......

@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!