BST
Active Member
Aren't potentiometer a resistor? Can I get around one in a (b) driver like this?
Double check before assembling my light
- Thread starter GroDank101
- Start date
jeepster1993
Well-Known Member
The driver will run just fine without a pot. Just at 100%. That is fine if that is your intent.
Not sure about a switch...(I was told to not use this connect to turn off the lights, as the driver is still is running...or something like that)
Not sure about a switch...(I was told to not use this connect to turn off the lights, as the driver is still is running...or something like that)
BST
Active Member
Fuck it I'm rolling it
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GroDank101
Well-Known Member
At first I had my cobs set up like this 
But I think it would be better like this
Since I want to run the wires in between the fins on the back of the heatsinks. I just need to make sure I don't hit any fins on the back when I drill the holes though. I really hope I don't hit the fins when drilling. Does this sound like a good idea?
But I think it would be better like this
Since I want to run the wires in between the fins on the back of the heatsinks. I just need to make sure I don't hit any fins on the back when I drill the holes though. I really hope I don't hit the fins when drilling. Does this sound like a good idea?
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GroDank101
Well-Known Member
My b version driver was causing my cobs to flicker quickly to random brightnesses. I'm going to switch potentiometers and try again. But I'm not sure what caused them to flicker. They never go completely off but just flicker brightness.
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sixstring2112
Well-Known Member
Try capping the dim leads and running it at full power.if it works fine like that you have a bad pot or bad wiring to it.its just a cheap part,they can be faulty.
GroDank101
Well-Known Member
@sixstring2112 ok I understand. sucks that my A version is stuck on 175w, or I could match them up.
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GroDank101
Well-Known Member
Got the lights ready, now just need to attach the positive and negative leads from the driver and it should be working and ready to hang up and attach the fans.
And is it OK to leave my dimmer leads just cut off like this?
And is it OK to leave my dimmer leads just cut off like this?
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sixstring2112
Well-Known Member
yes but it would be safer to put some electrical tape on the ends,or just screw a wire nut on each one
VegasWinner
Well-Known Member
The Dawg
Well-Known Member
BST I Pm You And Informed You That The Pot Need A 10k Resistor. Below Is A Pic Of The 1 I'm Currently Working On
BST
Active Member
So there's now two resistors in the circuit (pot + resistor). ??? What's the 10k do on that side?BST I Pm You And Informed You That The Pot Need A 10k Resistor. Below Is A Pic Of The 1 I'm Currently Working On
View attachment 3784519
I'm confused between the A & B drivers. I know the differences. But can't one get more output by cutting out pot? Which this basically is.
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GroDank101
Well-Known Member
I taped off the b version dimming leads. And everything is running, drawing 391 watts total not including the active cooling 140mm fans, 175w for one and the other maxed at 216w according to my killawatt. I still need to add a potentiometer to my B version. the two 140mm fans only draw 3 watts total.
The grow area is a 4x2' so that's about 49 watts/sqft.
The grow area is a 4x2' so that's about 49 watts/sqft.
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BST
Active Member
So what your saying is the kill switch does give the b version more juice. Throw kill under pot.
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GroDank101
Well-Known Member
Now that I got my potentiometer working, I have both lights matched at 175w, for a total 350w over 4x2' which is 43.75 watts per square foot. 
GroDank101
Well-Known Member
I noticed a hotspot in my connection. This is on the first positive connection in the series from the driver to cob #1.
I think I know why. This connection has silver stranded 18 gauge. The rest has coppper stranded 18 gauge. Maybe I should replace all the silver stranded with copper stranded. Thanks for any help on this issue.
I think I know why. This connection has silver stranded 18 gauge. The rest has coppper stranded 18 gauge. Maybe I should replace all the silver stranded with copper stranded. Thanks for any help on this issue.