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Discussion Starter #1
Just in case anybody finds these interesting, after building some larger scale LED setups for a couple propagation and fishroom setups I've been wanting something different than the usual offerings from places like Coralux, Steve'sLED, RapidLED, etc. All of the boards you see offered for sale work for lower voltage builds (12-24 volts) just fine, but the LDD-L drivers are compact, easy to use alternatives to the LDD-H series for smaller builds, or when multiple smaller strings are required. I for one use them extensively for nano fixtures, or for filling in the extra colors on "full spectrum" types of builds, in conjunction with 21 volt laptop power supplies, ranging in size from 3 to 7 amps, which is plenty in most smaller to medium situations.

These can be jumpered to allow channels to be doubled up, to allow four or eight channels of control on the eight driver version, and eight channels of control on the sixteen channel version, with daisy chaining also possible for stacking boards as needed for larger scale configurations. All parts are through-hole, so easy enough for even a novice to solder up :)


Keep in mind these are sort-of a power-user board, and while they offer pretty good flexibility, they are not as of now compatible with the Bluefish mini- although with the use of a level shifter they would be, the fullsize Bluefish will work however. I have been primarily using the LDD-L with the Storm controller or the very nice 16 channel controller featured over at Ultimatereef- https://www.ultimatereef.net/threads/simple-multichannel-up-to-16-led-controller.784531/ Any controller using the PCA9685 PWM driver would be a perfect fit for a companion to this board.


I'm also working up some sketches for larger versions using the LDD-H drivers as well, but due to the larger physical size I'm not sure I'll put more than eight drivers to a single board to keep them affordable for small runs of PCBs. Suggestions are welcome.
 

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Discussion Starter #3
For anybody who cares, these are an open source design, once things are finalised the files will be open to free use by anyone interested!!!

Here's the first iteration of the "EZ" Nano board, onboard DC power and 1/8" TRS (stereo) jacks, so that all one needs to do is drill corresponding holes in the panel and allow the TRS jacks to protrude slightly, and then insert power. I'll work up a drilling template too (easy peasy) to make it easy enough to use. Sure beats air-wiring things on small fixture builds!

Since this is the "EZ" version, I've left off the jumpering feature to allow it to be a very simple board, if one wishes to parallel channels they would need to do some jumpering of their own, or go with the "Pro" version of the board.

The DC jack chosen- Kobiconn 163-179PH-EX:

https://www.mouser.com/ProductDetail/Kobiconn/163-179PH-EX?qs=Xb8IjHhkxj5l2UOaIqcGCw==


The TRS/stereo jack chosen- CUI SJ1-3533:

https://www.mouser.com/ProductDetail/CUI/SJ1-3533?qs=WyjlAZoYn50TSYIwwZxYnQ==

If anyone knows of any alternatives that may be cheaper/preferable for similar quality let me know.
 

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Discussion Starter #6
Alright, got the boards to a mostly final state for the 4 and 8 channel versions. Attached are the current board designs.

So far this has been a very enjoyable (and challenging!) project, and I'm very pleased with the boards so far. We have standard functionality across all four, with similar layout and schemes to make them easy to understand as well as making upgrades easy when moving from one to the next. Small too! The nano versions are 50mm (2") square, and the 8Up boards are 50x100mm (2x4") for nice compact builds.

Now we just need a cool logo or symbol of some sort to silkscreen onto them :)
 

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Thanks for the PCB designs which you have made, they will be very useful. I have made a lot of designs not only for PCB but also for the circuit boards if I find them I will post them here, but I can't promise anything. There are a lot of such designs not only on the internet but also in books, or you just wanted to verify how qualified we are and test our capability to solve it and see all the mistakes you have made. If I am right then you are clever enough to deceive all of us. I hope that the next time you will simply say it from the beginning and not pretend as you did now.
 

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What are you trying to say? That I'm pretending what? I'm having a hard time understanding what you are trying to convey.

These were a project of mine that I wanted to personally use, and decided would fill in a need in the DIY LED world so decided to share. It was a learning exercise for me to work out the best way to design them with input from others as to any special needs or considerations that should be taken into account. I have no formal training in PCB design and am still learning as I go.

Many of these have been finalised and posted for open use on Github, and due to little interest I haven't followed up until now on this forum-

https://github.com/Lingwendil/LDD-L-driver-PCBs-for-Aquarium-LED-lighting

As always, check that they are suitable for your purposes before having any produced. There may be small errors that have not been caught as I have not personally produced all of them yet, But I do have several finished of a couple types that work well- The 8up LDD-H board has been running the lights on my reef tank for the last year and a half with zero issues, and I have a couple extras available for anyone interested in building on one. The LDD-L EZ Nano has also been running a fixture for about the same amount of time on my nano reef and a planted setup.
 

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What are you trying to say? That I'm pretending what? I'm having a hard time understanding what you are trying to convey.

These were a project of mine that I wanted to personally use, and decided would fill in a need in the DIY LED world so decided to share. It was a learning exercise for me to work out the best way to design them with input from others as to any special needs or considerations that should be taken into account. I have no formal training in PCB design and am still learning as I go.

Many of these have been finalised and posted for open use on Github, and due to little interest I haven't followed up until now on this forum-

https://github.com/Lingwendil/LDD-L-driver-PCBs-for-Aquarium-LED-lighting

As always, check that they are suitable for your purposes before having any produced. There may be small errors that have not been caught as I have not personally produced all of them yet, But I do have several finished of a couple types that work well- The 8up LDD-H board has been running the lights on my reef tank for the last year and a half with zero issues, and I have a couple extras available for anyone interested in building on one. The LDD-L EZ Nano has also been running a fixture for about the same amount of time on my nano reef and a planted setup.
I appreciate your posts. I have no idea where that other 1 time poster came from? ...not worth the time responding to in my opinion!
 
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