Dmx dimmer: problem with dmx library and dimmer library

Projects Programming
1

Hi! I want to ask a suggestion. I'm trying to develop an AC dimmer controlled by DMX, but I have a problem using the DmxSerial library (to read the dmx data) and the RBDDimmer library that control the dimmer. The dimmer doesnt work when I include also the dmx serial library. I think it could be a problem of incompatibility between the two libraries (maybe they use something together such as interrupt ?)
Someone know a solution ?
Thanks

2

It might help if you could post your code; in case you have forgotten, please use code tags using the </> button intghe reply window.

Please provide links to the DmxSerial library and the RBDDdimmer library.

That would more than likely result in a linker error (something in the line of multiple __vector, not sure of the exact mesage).

3

Thank you for answering... Here's the library:
https://www.arduino.cc/reference/en/libraries/dmxserial/
https://github.com/RobotDynOfficial/RBDDimmer

The code is really simple for now:

#include <DMXSerial.h>
#include <RBDdimmer.h>

const int dimmer_1 = 11;

dimmerLamp blinder_1(dimmer_1);

const int led = 13;

void setup() {
  pinMode(led,OUTPUT);
  
  DMXSerial.init(DMXReceiver);

  blinder_1.begin(NORMAL_MODE, ON);
  
  blinder_1.setPower(0);

  delay(1000);
}

void loop() {
  blinder_1.setPower(255);
}

The dimmer works if i comment the line

 DMXSerial.init(DMXReceiver);

PS. the code for now doesn't use dmx signal.

No compile error.

thanks

4

I have never used the dmxserial library, but use a different system for receiving dmx.
Receiving data at 250kbps continuously (seriously, DMX is a constant flow of data with a short 80us break) put';s quite a lot of strain on the CPU.
Usually you will be better of using a single frame receiving method on an AVR.
I have no idea how the AC dimmer works, either, but you haven't shown the wiring as yet.
I guess a zero-cross detection method is used from what i can tell from the SRC, and the combination of that with DMX reception, will just not work on an AVR. A faster processor will be required.

5

Ok so it is probably a problem related to the performance of the arduino nano. Too slow to get the dimmer works correctly.
Thanks

6

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