Can I built my own interface?
Posted: July 12th, 2007, 9:02 pm
This is from the old forum
Altorfoss
Hi all
Is it possible to built an interface, what kind of protocol is used for DMX
Oke I am a dummy, can I use a RS485 interface.
As I omce built such a thing for a PLC controller for Siemens, I expect that a serial to DMX interface is as easy as that.
Wrong??
Plz answer me.....
Greetings from the Netherlands (12points plz)
Harrie
Mattotone
The enttec Open DMX is a free open source interface, you may wish to start from there.
"This DMX USB interface is based on the FTDI 232BM chip, it's a USB to serial converter."
The protocol is a serial protocol with no error checking.
http://www.dmx512-online.com/packt.html
Please beware of the new dmx Protocol with RDM which allows the lights to respond back to the controller.
HyperBaton
Easiest way I can think of would be a FTDI 232 USB to Serial IC combined with a 3.3V RS485 transceiver. You can power the transceiver straight from the FTDI chip, which draws its power from the USB port.
Altorfoss
Hi all
Is it possible to built an interface, what kind of protocol is used for DMX
Oke I am a dummy, can I use a RS485 interface.
As I omce built such a thing for a PLC controller for Siemens, I expect that a serial to DMX interface is as easy as that.
Wrong??
Plz answer me.....
Greetings from the Netherlands (12points plz)
Harrie
Mattotone
The enttec Open DMX is a free open source interface, you may wish to start from there.
"This DMX USB interface is based on the FTDI 232BM chip, it's a USB to serial converter."
The protocol is a serial protocol with no error checking.
http://www.dmx512-online.com/packt.html
Please beware of the new dmx Protocol with RDM which allows the lights to respond back to the controller.
HyperBaton
Easiest way I can think of would be a FTDI 232 USB to Serial IC combined with a 3.3V RS485 transceiver. You can power the transceiver straight from the FTDI chip, which draws its power from the USB port.