Reef Angel Forum

Sigh... it didn't seem to work. I put those two lines you mentioned before the "interface" method. This is what I did: //ATO PWM output pinMode(lowATOPin, OUTPUT); pinMode(highATOPin, OUTPUT); analogWrite(lowATOPin, ReefAngel.PWM.GetActinicValue() * 2.55); analogWrite(highATOPin, ReefAngel...

Is it true that only one ATO port can send out PWM?

Also what configuration have folks had success with?

Technically there is, but it will require you to open the box and solder some jumper bridges with wires to short out the gain of the op amp that boosts the signal. Another way is to use your ATO port. They output 0-5V PWM. Something like this: pinMode(lowATOPin,OUTPUT); analogWrite(lowATOPin,2.55*8...

I respect your thoughts on this Steve, but as I understand what PWM is and as referenced in the following post from Roberto... http://forum.reefangel.com/viewtopic.php?f=2&t=2980 I don't think this is correct. A PWM determines the value between the width of each pulse, it still pulses at 10 vol...

The PWM control signal going from the RA dimming ports to PWM in on the LDD would be 50% of the full 10v (or 5v). Here is code for a PWM slope going from 0-50% for the daylight and actinic channels. Times are 9am to 8pm. ReefAngel.PWM.SetDaylight( PWMSlope(9,0,20,0,0,50,60,0) ); ReefAngel.PWM.SetAc...

How do you code it to go 50%? And I assume you mean voltage 50% and not PWM signal 50%. Roberto is this true? If so, cool. If not, I'd rather not buy a PWM dimming module, so is it possible to build and interface/ converter?

How new is your dimming module? The newer models have jumpers in them that you can change each channel from analog to PWM to from 0-10 to 0-5v. Although Roberto is correct you may have fried the input dimming channel of your drivers. Try feeding a 0-5v PWM signal into it (if you have that option) a...

Not sure where you got your information, but LDD drivers are a little different than other drivers. Check the datasheet: *** URL Removed *** They don't work with analog signals. They work with 0-5V PWM dimming. The relay boxes output 0-10V signals. According to the datasheet, the max voltage is 6V....

I just can't get them to work. Only one driver, will turn on the lights when I unplug them from the PWM connections on the relay box. How can I test to see if the LDD drivers are the issue (I do get 48 volts from it). Or if the signal is really analog out of the relay box.