Reefkeeper lunar pod port

[oreo57]

Anyone probe this?

would like to add colors not available..
kind of assuming its 3.3v w/ minimal current possible 20-40mA

think I can use something like these.
https://lighthouseleds.com/led-component-lighting/clear-top-dip-leds/5mm-led-flat-top.html

 

[oreo57]

nobody huh..

 

[Gorgok]

You could always just make that trip a relay instead, since it lighting 2 white/blue LEDs means its at least 3V.

 

[oreo57]

Yea, just trying to help out another poster who needs one extra channel..
If it's like the "lunar module" its a simple $1 set of diodes and a plastic housing which is all they would need..
unf I don't have the unit but seems a direct drive voltage. Just worried about current (constant?)

http://www.reefcentral.com/forums/showthread.php?t=2624453

http://www.forum.digitalaquatics.com/viewtopic.php?t=343

Postby Digital Aquatics » Mon Nov 10, 2008 7:05 pm
There are a number of things that can be done differently to drive LEDs. Because we do not warranty/support the modification of any module, we can not provide the requested data. I will say if you are interested the information can be gathered with a little work. We just can't post it as doing so may suggest we support activity that we don't.

Thanks,
Scott

well..

 

[Gorgok]

I could believe they just put some limiting resistor in the module itself. Just to make sure it doesn't draw any more than the micro in the brain box can output... Then the port would just have to expose the Vcc via a digital pin of the micro, and the module would run like any blinking led on an arduino. If they are really fancy its one of the pwm pins (can it dim?).

I would err on the side that its non-limited and could fry the micro without external limiting. At least that way hooking it up wont kill the RK...

 

[oreo57]

I could believe they just put some limiting resistor in the module itself. Just to make sure it doesn't draw any more than the micro in the brain box can output... Then the port would just have to expose the Vcc via a digital pin of the micro, and the module would run like any blinking led on an arduino. If they are really fancy its one of the pwm pins (can it dim?).

I would err on the side that its non-limited and could fry the micro without external limiting. At least that way hooking it up wont kill the RK...

Yes it can dim AFAICT..

As an experiment, changing pods1+2 to Lunar function reveals that they were set to intensity 5 and ramp 0. Saved with the settings of intensity 80 and Ramp 0 (and my tank having entered Night Mode at this point of the evening) yields intensity at 20(!).............http://www.forum.digitalaquatics.com/viewtopic.php?t=11724.

So the ports are fully software controlled and based on software set "function"..

BUT ONWARD:

Each port, whether it is on the MLC or the ALC, are designed to handle one pod. That's two total on the ALC and six total on the MLC. Any other use could damage the module and void your warranty.

so best guess.. 5V,

Each digital output pin of an Arduino Uno can supply no more than 40 mA

available on each port..
https://lighthouseleds.com/led-component-lighting/clear-top-dip-leds/5mm-led-flat-top.html

2 in series plus small current limiting resistor..1/4 6.8Ohms.."maybe" 15Ohm..