# Opendmx ft232 no output
**URL:** https://discourse.processing.org/t/opendmx-ft232-no-output/8934
**Category:** Electronics (Arduino, etc.)
**Created:** [March 4, 2019, 4:16pm UTC](https://discourse.processing.org/t/opendmx-ft232-no-output/8934 "2019-03-04T16:16:44Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@spiderdab](https://discourse.processing.org/u/spiderdab)
#### Post date: [March 4, 2019, 4:16pm UTC](https://discourse.processing.org/t/opendmx-ft232-no-output/8934/1 "2019-03-04T16:16:44Z")
Hi, first time writing on this new platform, but have been on the old forum for years.
I need to implement a particular dmx software to control some dmx winch.
The problem I have is I want to use a entec opendmx usb converter, which uses a ft232 chip. So raw serial commands should be sent out (dmx protocol is well documented around).
The problem is if i open the serial at 250000 baud and send something, the rs485 outputs nothing (looking with DSO). The same works perfectly with other software as QLC+.
Any idea?
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### Author:  [@spiderdab](https://discourse.processing.org/u/spiderdab)
#### Post date: [March 6, 2019, 12:19pm UTC](https://discourse.processing.org/t/opendmx-ft232-no-output/8934/2 "2019-03-06T12:19:33Z")
Or, to make it easier…
Do you know if, to speak serially to an ft232 chip, I need to import some library or anything different than just open a Serial and send something?
I’ve double checked permissions and it seems ok, it goes on the dialout group, and I’m part of it.
The FTDI chip is directly connected to a max485 chip to translate serial to rs485, but I have no signal on the 485 output, whatever i send.
The same hardware used with a software like QLC+ works as expected.
[HERE](https://github.com/orcaomar/processing-opendmx/blob/master/opendmx/src/OpenDmx.java) there is a link to a library that does what I want, but it works only in Windows, since it uses FTDI\_D2XX dll.
Can someone help me how to talk to that chip in Linux?
Thanks, Davide
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### Author:  [@spiderdab](https://discourse.processing.org/u/spiderdab)
#### Post date: [March 6, 2019, 3:19pm UTC](https://discourse.processing.org/t/opendmx-ft232-no-output/8934/3 "2019-03-06T15:19:51Z")
Nevermind, I’ve found a different solution…
The control over ftdi232 means mainly the ability to set the transmit/receive state, turning HIGH or LOW two pins on the rs485 chip.
Since for the moment I need only to transmit, I’ve put a resistor to PULLUP those pin to 5v.
Now it’s so simple to transmit DMX…
Thanks all.
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### Author:  [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)
#### Post date: [March 8, 2019, 11:43pm UTC](https://discourse.processing.org/t/opendmx-ft232-no-output/8934/4 "2019-03-08T23:43:36Z")
Glad you worked it out – thanks so much for sharing your solution!