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Also would you say the 24V pin or DIM pin on the driver is the voltage input that goes from power supply to the driver?
Let's take a step back. And troubleshoot properly.
1) So you have 6 LED series chain that works.
2) You have one SINGLE module that works (full brightness)
Correct?
We can tackle the 2nd DUAL module and diming next.
You probably have this.
https://www.stevesleds.com/The-Double--Digital-Dimming-LED-Driver_p_164.html
But look at the SPEC.
ON THE STEVE V8 Module (INPUTS) LEFT SIDE
THE 24V is INPUT from your POWER SUPPLY. Along with G for Ground
That is all you need to power up the MOdule and Runng your LED's at full brightness.
*** IF YOU HAVE PROPER # of LEDS based on he Voltage you are providing ** (which Steves' spec says up to 24Volts)
The then you have DIMMING CONTROL (3 choices)
1) I didn't find any details, but I think DIM is the PWM input so that you and control dimming from a PWM signal.
2) 5 V appear to be a (0-5 Volt) input to control the Dimming with a ARDIUNO which can run at max 5 Volts.
3) then you have ON BOARD control (POT). A simple POT at Correct Resisitance will dim manually by turning a POT Nob. You can only DIM down.
Ok. Perfect.
But get rid of 5 volt connection, and DIM wire for now.
Does the 2nd module work the same way?
but if you want to get dimming working......We can tackle that too.
Dimming will most likely just be a POT between the TWO PINS label pot.
You don't need 5Volts to run it.
Then it should DIM.I have a potentiometer wired into those 2 pins.
Then it should DIM.
I have a different kind of controller, and a POT does the dimming.
Is your pot ok.
You can actually test this way.
Nothing Connected to POT PINs. Will give full or min brightnesss.
Short will give opposite.
By short do you mean a jumper wire from the + to - POT pins or?
If it works like my Module, a SHORT BETWEEN POT (-) and POT (+) will be the opposite of OPEN, thus OPPOSITE of MAX Brightness, or MAx CURRENT.
In between SHORT AND OPEN, is resistance that sets brightness (Half, Quarter, or 3/4).
So if YOUR LEDS are FULLY ON when nothing connected to POT....They will go MIN or OFF when SHORT ON (+- POT)
Just briefly short the two wires going to POT. It should blink the LED's off, or min brightness.
That means part of the Dimming circuit is busted. Possibly a transistor.No change
That means part of the Dimming circuit is busted. Possibly a transistor.
There could be another reason, but I highly doubt it. Maybe the 5 Volts needs to be hooked up thru the pot. DOUBT IT, but you never know.
There is a clue that says ARDIUNO INPUT. Ardiuno is 5 Volt.
So is it possible you need to wire 5 Volt output thru the Pot to Vary the Voltage. But that doesn't make any sense.
Do you want to try the same with one of the Channels on your DUAL driver?
I just tested my current driver.
1) If nothing hooked up to POT, I get full brightness.
2) A short goes off.
3) Reisistance dims
I may be wrong....
but it appears your SINGLE Driver won't dim because the transistor that does the dimming control is FRIED.
Sorry to say this.
But I could be wrong. Doubt I am wrong.
The good news, is your LEDs are good.