Running LED array with Arduino

Other Hardware LEDs and Multiplexing
1

Hello everyone,

Some of you may have read my other thread on which arduino to use, this is the same project.
The project is a DIY led light fixture for my aquarium, along with temperature sensors, lcd touchscreen, and other things.

Right now all I've been working on is trying to get the arduino wired to the led driver.

I'm using drivers from Stevesleds (www.stevesleds.com) in combination with an Arduino Mega 2560.

Here's a portion of the schematic for the led driver:

1023×565 49 KB

I imagine I connect one of the pwm pins on the Arduino that is referenced in the coding to pin #2 on the driver (pwm input).
The problem is I'm not sure what to do with pin #4 on the driver (5V output).

I really appreciate any help ahead of time.

2

sounds like it would go to the + side of your led(s)

3

Pin #4 could connect to the 5V pin on the Mega and you might also need a wire from #1 to GND on the Mega as well as GND of the power supply but the circuit could be using the PWM line as the ground return so try it without first. Does the manual say how much current pin #4 draws as it may be to much for the Mega 5V regulator.