New Jarduino build gets started

[WarDog]

Dude... no idea what you just said, might as well be speaking Swahilli... does it go beep beep like R2-D2? Lol.

Honestly though, I'm glad you figured it out. Are you going to be using this on your new build?

[daplatapus]

Haha, that's how I felt when I first embarked on this little adventure.

Ya, that's the plan. 3 - 18" full spectrum fixtures,

[daplatapus]

WOOHOO!!! Got it fixed. Now everything that I have hooked up is working as it should... only thing is that's 1 out of 3, lol
Hopefully it's just a matter of repeating what got done right on the first

[daplatapus]

Well, started cleaning things up a bit now that most everything is figured out. But now that I unhooked a couple things, I can't remember how they go back together.

Here's where I'm at now. I took the HLG drivers out of the box. I was originally going to put it all in the left upper cabinet of the tank stand, but that put it in the same compartment as the overflow. I eventually thought that would give me moisture issues with the electronics so I mounted everything to a piece of plywood which will sit in the roof of the cabinet. I'm still looking to extend the TFT screen and mount it somewhere where I can reach it, but honestly, even if it just sits up top, not visible, it's not that big a deal. It's not very often I'll be changing anything with it regularly anyway.

This is what it looks like now:





Now I just need to remember how the heck to hook up the HLG drivers.
I've got the LED's in series hooked up to the V- and V+. But the Dim- and Dim+ are the wires that have me stumped. I think the Dim+ goes to the PWM pin on the Arduino... And the Dim- to the ground plane of the Arduino..????
I think I may be losing my brain cells...

Anyone???

[Ron99]

Yup, Dim+ to the PWM signal and Dim- to ground

[daplatapus]

Cool, thanks! I've run into another potential problem, lol. I guess the HLG drivers need a 10V pwm signal but he Arduino only delivers 5V.
So now I need to see if the drivers will work at all (just at 50%) or how to convert the signal...

[Ron99]

I did something similar with an Arduino years ago. IIRC you need a PNP transistor or a MOSFET and a 10V power supply. The 5V PWM switches the 10V via the transistor.