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I think your over it with the Photo Red XPE's, I would run them softer.

My Buddy went to order the 4 shelf version yesterday for a kitchen herb garden. Its like 400$cdn for the unit and 450$cdn for shipping, Its too much and because of that they lost a sale. He is already in Canada also so shipping shouldn't be that much.

Umm that is a good question, I would say ground it to the case but its plastic so I don't know, it is only low voltage maybe that's why they don't add the ground wire. My HLN series drivers have a green/yellow ground wire and they are the same voltage. When looking at the block diagrams of...

I thought the efficiency would have suffered more, I guess 2 CXA30** on the HLG-120H-C1400B would run above 90%. I should just order some already, my heat sinks will be here this week. I need to get a new power monitor (last one melted) so I can check the efficiency myself. My main problem is...

You are running drivers maxing out the voltage and as such the string can only pull 1A. I run them maxing out the current having room to spare on the voltage so I get the full 1.4 amps. When I turn my pot (100k resistor or PWM 0-10v) I notice the dim right away and so does my meter, I can fade...

Nice Drivers, I notice that the LPC-100 list.. INPUT VOLTAGE RANGE 90-264 VAC and the LPC-150 lists... INPUT VOLTAGE RANGE 180-305 VAC Which is not suitable for everyone. Just wanted to point that out in case anyone missed it.

Well if your just looking for 1.4 amps then you can get LPC-60-1400 on ebay, they are NON PFC and Not dimmable, but cheap. Not as cheap as those JLX but I hear those run real hot and who knows when they will be back in stock.

There is a HLN-80H-42* which is 1950mA and the LPF-90D-42* which is 2150mA. Both are dimmable, Power factor corrected and available now, which the LPC series are not.

I guess that answers your pot mounting question. How low can you dim with the internal dimmer? I think only 50% with the A version but haven't had confirmation yet. Just for anyone else who reads this looking for the external dimmer, its the B version of the driver. The B version can be dimmed...

Thanks SDS, I built it the next day with 4 channels for independent control over colors. It works great, but I did come across a problem. With the Mean Well 3-in-1 dimming function of the HLN series (I think its the same in the HLG) I had to bridge dim+(blue) and dim-(white) with a 1K ohm pull...

I have one of these at work but never had to use it for anything, I'm sure it would break. http://www.fastenal.com/web/products/details/7003965

I got a response from cutter about the photo red stars, I had asked... And he responded with... So I'll order the 665nm stars, they seem to be the cheapest and I don't have to learn how to reflow solder with my stove.

I know the Mean Well drivers can be dimmed with resistance, 1-10 analog volts, or 1-10v pwm. It should act the same no matter what way you do it with the built in 3-in-1 dimmer function. It works be telling the driver to reduce output current. Do you mean instead of reducing the current to...

I believe the LPF-60D-42 is a better match for the 3070 as you would not need to use anymore than 42 volts. At 1.25A the 3070 only uses 36-37 volts getting you around 42 watts which the 48v maxes out at. The 42v version will driver it 1.43A getting you around 52 watts. Also the LPF (IP67) driver...

Supra, it seems odd to me that the 10mm stars are $2.77usd and the loose ones are $4.18usd, are they the same chip? also where do you see the group listed on mouser and digi-key? sorry if its obvious. Scotch, Did you order from mouser (P5 670nm)? those have to be reflowed on to a sinkpad...

I have come across the whorled phenotype before, supposedly it is common in the UBC Chemo. I did come across an interesting mutation the other day I have never seen before. Its a leaf from my buddies outdoor grow, he took a cutting to sex it and I noticed the leaf. Its a male Asshole plant from...

For anyone looking to power their COB's stronger than 50 watts (why?). I was looking through some Mean Well Spec sheets and came across a dimmable driver for 1 CXA, it runs 25.2 - 42 volts @ 2.15A. Its the LPF-90D-42 and though a bit pricey will give you around 90 watts. I would think you need...

Locally I had access to Arctic Silver 5 and Noctua NT-H1. I chose the Noctua because it was rated better in this chart which differs a bit.

When I was researching the fan I read that the 4" inch model was the loudest, smaller motor = higher pitch and easier to hear. I bought the 6" versions as it was supposed to be noticeably quieter. Also I found when I it up to a fan controller it was also about 1.5-2x, the triac dimmer was...

I don't know if you mentioned what exhaust fan your using but I used to use a fan similar to this, it was effective but loud; even when slowed it down you could always hear it. I ordered up a TD-Silent fan and when I plugged it in my partner immediately ordered a second. They can be wired in...