Home-made USB -> RS232 interface
Posted: July 12th, 2007, 8:59 pm
This is from the old forum
HyperBaton
Hello,
Some friends and I did a school project where we made a DMX-receiver using an AVR ATmega168 microcontroller that controlled 4 PWMs, used to dim TL-lights.
We sent the DMX-signals to this receiver using a real DMX-controller of which the signal was then transformed to 5V logics using a RS485 transceiver.
I now want to use Freestyler DMX to send DMX-signals to this microcontroller. I have a USB to RS232 interface of which the drivers have been installed, so this USB interface is a valid COM-port. Basically, I need to send the DMX-signal using this COM-port. How can I accomplish this?
Oh, if anyone wants source code for this DMX-receiver, I'm happy to give it to you.
HyperBaton
Anyone? I just want to know if I can select one of those interfaces in the menu so that Freestyler sends DMX with a 250kHz baudrate to the appointed COM port...
HyperBaton
Well it works when I select the Enttec Open DMX...
Jack
Perhaps you can take some pics of your controller? Would be interesting!
HyperBaton
Sure, might take a couple of days though.
dcuartielles
is it possible to get the code and schematic for this one?
/d
HyperBaton
For the receiver or for the transmitter?
HyperBaton
Hello,
Some friends and I did a school project where we made a DMX-receiver using an AVR ATmega168 microcontroller that controlled 4 PWMs, used to dim TL-lights.
We sent the DMX-signals to this receiver using a real DMX-controller of which the signal was then transformed to 5V logics using a RS485 transceiver.
I now want to use Freestyler DMX to send DMX-signals to this microcontroller. I have a USB to RS232 interface of which the drivers have been installed, so this USB interface is a valid COM-port. Basically, I need to send the DMX-signal using this COM-port. How can I accomplish this?
Oh, if anyone wants source code for this DMX-receiver, I'm happy to give it to you.
HyperBaton
Anyone? I just want to know if I can select one of those interfaces in the menu so that Freestyler sends DMX with a 250kHz baudrate to the appointed COM port...
HyperBaton
Well it works when I select the Enttec Open DMX...
Jack
Perhaps you can take some pics of your controller? Would be interesting!
HyperBaton
Sure, might take a couple of days though.
dcuartielles
is it possible to get the code and schematic for this one?
/d
HyperBaton
For the receiver or for the transmitter?