Powering led peripherals

A question best asked here.

I am looking to add an arduino, some fans (probably 2x noctua s12-pwm), and make use of the pwm function of my driver (hlg-60h-700b) which powers my 9x vero-10 fixture. The arduino is primarily for smart lamp control and cooling. I'm having trouble understanding how to power the peripherals.

My led driver isn't up to the complete task as it only just runs the lights. To my understanding, I need a supply that provides the following; 12v @1a for the arduino, 12v @ 0.12a for each fan, and 10v for the hlg's pwm.

While I understand how to power LEDs, I've got no idea where to start with the rest. I'm basically trying to avoid having a bunch of unreliable wall-warts around. I'm not after a direct answer, but if my fellow diy'ers could guide me along I'd be most appreciative.

Ready...

Typhon LED controller allows you to control 4 LED channels independently. Perfect for ANY LED drivers that accepts either 5V or 10V PWM input controls, such as Meanwell LED Driver (10V input PWM)
Note: Max of 2 LED drivers can be wired to each channel.

• Four independently controlled channels with either 10V PWM or 5V PWM output.
• Ability to set timing (on/off), maximum intensity, and fade time for each channel.
• Real Time Clock.
• LCD screen displaying real time and level of intensity for each channel.
• Upgradeable Software using FTDI USB Cord.

http://www.boostled.com/product_p/typhon.htm

or DiYe with Arduino...

http://www.nano-reef.com/topic/321511-typhon-based-led-controller-on-the-cheap-seriously/

Cheers guod.

I read through both of those threads many moons ago when building my first controller, but unfortunately I couldn't find any information eluding how to supply power to more than just the arduino from one power source, without providing too much voltage or current by accident. I've spent a considerable amount of time going through controller threads, most people just seem to piggy back their fans on their drivers, and power the arduino with a wall-wart.

I guess I could go with a modified micro-atx supply, but I would still prefer a specific psu selected for the task with known reliability and specifications. I've layed down quite a bit of money, so would like to keep the standard up.

12 Volt for all. 2 Amps will serve the Arduino and some fans. the rest is nothing.
the 10V Rail is good for 4-6 drivers.

guod said:

12 Volt for all. 2 Amps will serve the Arduino and some fans. the rest is nothing.
the 10V Rail is good for 4-6 drivers.

Click to expand...

Put this together on a breadboard. I have stepped down to 10v successfully (thank you), but the veros remain dim. Transistor is a BC640. Have tried a 1k resistor between ~9 and the 640's base. Using the fader example sketch, serial shows brightness value is changing as it would be expected. Not too sure where I may have gone wrong.

the BC640 is an pnp Transistor

you have to change the circuit for this type.
and yes, a 1k resistor has to be between base and the arduino output,

Cheers.

The pwm logic is inverted (0=full, 255=0), I'm assuming this is because I've used two transistors. Is there any advantage to using two, or will just the non suffice? There is many conflicting diagrams out there...

One issue, the driver dims until the LEDs are off, but when ramping back up they don't come back on until about 40%. Is there a work around for this, is this a malfunction or is there a specific reason for this? Or a work around maybe?

Update on the return from low dimming issue. Seems that when using a 100k Pot I still have the issue. I can't find anything in the datasheets about it either.