The Planted Tank Forum - Search Results
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Search Forums

Showing results 1 to 25 of 250
Search took 2.68 seconds.
Search: Keyword(s): ; Posts Made By: jeffkrol
Forum: DIY Yesterday, 01:37 PM
Replies: 27
Views: 469
Posted By jeffkrol
A meanwell LDD-h is $7... ;) And has the PWM...

A meanwell LDD-h is $7... ;) And has the PWM circuit ..
Granted you are limited in output more so than custom (w/ out a chip). But you also have a bit more complicated circuit.. (some protection...
Forum: DIY Yesterday, 04:15 AM
Replies: 27
Views: 469
Posted By jeffkrol
IF the LED's are @3.5 V at 700mA you'd need the...

IF the LED's are @3.5 V at 700mA you'd need the PS to output at least 13.5V (3.5 X 3 + 3V for LDD-H)..and 11.2A....

What is the reasoning to make it so difficult?..

Might as well just use a...
Forum: Lighting 07-29-2014, 10:46 PM
Replies: 3
Views: 152
Posted By jeffkrol
Want to be a guinea pig??? Try some "lime"...

Want to be a guinea pig???

Try some "lime" w/ maybe a bit of red/blue
https://lh4.googleusercontent.com/-jUpVukQjtwc/U150P3vS7DI/AAAAAAAALP4/edf3h4ykuXE/s640/Rebel%20and%20ES%20lime%20PCamber.png...
Forum: DIY 07-29-2014, 08:58 PM
Replies: 27
Views: 469
Posted By jeffkrol
As an O/T.. Would this be a part that works? ...

As an O/T.. Would this be a part that works?
I'm a bit confused by the gate voltage.. Adruno "works best" if you don't have to fudge the PWM circuit (which is 5V)
...
Forum: DIY 07-29-2014, 07:30 PM
Replies: 27
Views: 469
Posted By jeffkrol
http://www.electronicspoint.com/attachments/pwm-mo...

http://www.electronicspoint.com/attachments/pwm-mosfet-jpg.2846/

you'd still need a PWM control signal correct??
Or is there a different configuration.

STOP making me learn "stuff"... ;)
...
Forum: Lighting 07-29-2014, 05:18 PM
Replies: 7
Views: 180
Posted By jeffkrol
Marineland has seen the light.. ;) ...

Marineland has seen the light.. ;)
http://www.marineland.com/Products/aquarium-lighting/LED-Aquarium-Lighting/led-aquarium-lighting-for-aquatic-plants.aspx
Forum: DIY 07-29-2014, 12:24 PM
Replies: 27
Views: 469
Posted By jeffkrol
note as long as there are photons to capture...

note as long as there are photons to capture photosynthesis never "stops"..
BUT it is not real efficient.. So under low light few, if any, photons are captured, and usually not enough to make a...
Forum: DIY 07-29-2014, 12:01 PM
Replies: 27
Views: 469
Posted By jeffkrol
175V DC :eek:@ whatever current you want to drive...

175V DC :eek:@ whatever current you want to drive them at. ... That is what you would need to put 50 LED's on one series string...

5 series parallel strands and you can use a 36V power supply @...
Forum: Lighting 07-29-2014, 11:48 AM
Replies: 8
Views: 253
Posted By jeffkrol
General CREE spectrum of LED "groups" Red line WW...

General CREE spectrum of LED "groups" Red line WW ect.

http://www.electronicsweekly.com/news/wp-content/uploads/sites/16/2012/11/itemid-55381-getasset.jpg

Warm whites are high in 620-ish red......
Forum: Shrimp & Other Invertebrates 07-29-2014, 05:13 AM
Replies: 13
Views: 349
Posted By jeffkrol
Hard to tell but looks like this: ...

Hard to tell but looks like this:
http://en.wikipedia.org/wiki/Neritina_natalensis

Olive Nerites are solid -ish toned green-ish.. ;)
Forum: Lighting 07-29-2014, 05:02 AM
Replies: 8
Views: 253
Posted By jeffkrol
Arguable..660nm hit s the peak ch.A band.. And...

Arguable..660nm hit s the peak ch.A band..
And it is a ""low level" component in white LED's . Warm white has a fair amount of 620-ish red.

I don't like to leave things out.. except purple (don't...
Forum: DIY 07-29-2014, 03:39 AM
Replies: 40
Views: 1,228
Posted By jeffkrol
Cavemen used stone tools, got the job done.. what...

Cavemen used stone tools, got the job done.. what is your point.. ;)
wouldn't be because he wants his royalty check huh..naaaahhhh... ;)...
Forum: Lighting 07-28-2014, 07:28 PM
Replies: 8
Views: 253
Posted By jeffkrol
as long as you use costant current and the Led's...

as long as you use costant current and the Led's can handle the mA ... no problem running different colors in series..

Why 620 nm reds.. not 660??
Forum: DIY 07-28-2014, 06:12 PM
Replies: 27
Views: 469
Posted By jeffkrol
Life is as simple or hard as we make it.. ;) ...

Life is as simple or hard as we make it.. ;)
http://www.pcbheaven.com/userpages/images/LED_driving_and_controlling_methods_14.png
...
Forum: Equipment 07-28-2014, 05:59 PM
Replies: 6
Views: 222
Posted By jeffkrol
As a guess those output gauges show a high max...

As a guess those output gauges show a high max limit.. (second one "black line" @150psi.. red at 200 approx)..:eek:

Getting a replacement finer gauge on the output may be problematic (chance of...
Forum: DIY 07-28-2014, 05:40 PM
Replies: 27
Views: 469
Posted By jeffkrol
first he bought "eggs" and stars separate.. ...

first he bought "eggs" and stars separate..
second see O2 surplus for variable current driver schematics..
Based on the Allegro Microsystems A6211GLJTR-T "chip"

V(in) is a tad restrictive.. ...
Forum: DIY 07-28-2014, 01:48 PM
Replies: 27
Views: 469
Posted By jeffkrol
first off consider a Typhon... or a Corallux...

first off consider a Typhon... or a Corallux controller.. unless you want to go the "uno" path. Basically both the above are built on adruno chassis..
The Typhon has a bit cruder "steps" than the...
Forum: Lighting 07-28-2014, 01:32 PM
Replies: 8
Views: 253
Posted By jeffkrol
Like gus said.. and within a restriction I...

Like gus said.. and within a restriction I agree.. unless you are going to put "types" on separate channels the blue is unnecessary..

you need (and this depends on what you like) a 2:1 ratio of...
Forum: Lighting 07-28-2014, 04:30 AM
Replies: 3
Views: 145
Posted By jeffkrol
you have hard choices because "if" you like the...

you have hard choices because "if" you like the functionality of the Sat plus the only easy alternative is this:...
Forum: DIY 07-28-2014, 03:53 AM
Replies: 40
Views: 1,228
Posted By jeffkrol
Good to know when I want to replace my street...

Good to know when I want to replace my street lights.. ;) .. err.. they have a place and are another tool in the lighting arsenal..;)
I'm fairly new to this but I have yet to find any MH used in...
Forum: Lighting 07-28-2014, 03:37 AM
Replies: 20
Views: 716
Posted By jeffkrol
Temps look on the safe side.. Possibly even good...

Temps look on the safe side.. Possibly even good enough w/ out fans..depending on the mounting..

http://www.leds.co.uk/news/85
257F... :eek: JUST for reference and that is junction temp.. not...
Forum: DIY 07-28-2014, 03:01 AM
Replies: 40
Views: 1,228
Posted By jeffkrol
not without "helicopters" .. ;) We shall see...

not without "helicopters" .. ;)
We shall see how long they last @2-3A.. when a fan fails or improper design.. not to mention finding or the cost of said drivers.
Last I saw @3A they get quite...
Forum: Lighting 07-28-2014, 02:48 AM
Replies: 4
Views: 170
Posted By jeffkrol
a good compliment at a fair price.. ...

a good compliment at a fair price..
http://www.aquatraders.com/LED-Aquarium-Lighting-EVO-Freshwater-Plant-p/56547p.htm

only downside is 6500k is a bit "coolish" but should compliment your planted...
Forum: Lighting 07-28-2014, 02:37 AM
Replies: 5
Views: 255
Posted By jeffkrol
do you want an easy DIY? or a canned solution.? ...

do you want an easy DIY? or a canned solution.?
If you want a simple, yet flexable solution.. Just get a 5M reel of "neutral white" 5630SMD LED's, a power supply, a controller and a few aluminum...
Forum: Lighting 07-27-2014, 03:34 PM
Replies: 5
Views: 255
Posted By jeffkrol
I'm not buying it.. LED's have surpassed those...

I'm not buying it.. LED's have surpassed those already:
add a 660nm red to a "cool white" LEd and you have 80% of an Arcadia..
http://www.aquahobby.com/products/img/arcadia_original_tropical.jpg
...
Showing results 1 to 25 of 250

 
Forum Jump

All times are GMT. The time now is 07:24 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012