New Jarduino build gets started

[daplatapus]

Lol, ok, I'm an idiot. I was wracking my brain thinking of anything that could be the problem. The fan still hasn't been ramping up and down via the PWM signal according to the temp sensor on the heatsink. I have a DS18B20 sensor that looks like a BC549 transistor, sunk into my heatsink with thermal compound and that's controlling my fans. I also have another one that is attached to a cable and sealed in an encased water proof housing like in your manual.
So I wondered if it was working properly. As soon as I grabbed it and watched the temp on the monitor go up, I realized the fan was speeding up
Duh, I must have either screwed up the pin assignments or something. It's been a long while since I set this all up, so I have to go back and read in the manual what's making all this work.
But at least I've got an idea what's wrong now! LOL
I haven't fixed it yet, but I'm still relieved.

[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...