Author Options:

can someone draw a thru hole board for RGB 10w LED with 12v input? Answered

12v input from car battery
to power this LED  

something swimilar to these

but cheap and simple cos i dont wanna use SMD

some info   on LED and board



Best Answer 3 years ago

Here if you like it, is the circuit that I will lay out through-hole ?

The LM317 regulators are used as constant current series inserts to each LED color and you may need to ONLY increase the resistance of the color that is too strong for the White you want.


Thanks 4 the BA

Here is your design





COMPONENT_side.bmpSOLDER _side.bmpboth.bmpmirror.bmp

Sorry to bring this old thread back up. But the LM317s wouldn't be happy accepting a 0-12v PWM input would they? I'm trying to drive one of these RGB LEDS from a 12v PWM driver, similar to the ones you would use for RGB strip. Thanks


3 years ago

I understand (that special feeling) this week I'm really busy but next
week if you PM remind me. I will design you a triple current driver and
if you can get the parts. Then Ill also lay it out a one side PCB which
you can hand solder in a perf board.

Please let me know here, if this is what you will want to do.

i would appreciate it alot
i aint going anywhere 2/3 weeks i`m sure i`ll find other stuff to do/solder
take your time and thnx again

Building a driver board yourself using through hole components will cost you more then buying the correct driver board. But a quick google search should give you plenty of 10W RGB LED driver schematics to work from. Then you gotta source all the through hole components yourself.


To add to the point, if you want to build this yourself because you plan to $ave, forget it. Economies of scale ruin that idea, not to mention high-ish demand for DIY parts that bid up prices when people "think" they can save money that way. The only reason you would want to make it is if:

A: you already have some junk-bin part's at your expenditure or

B: because you want to learn about electronics the fun way. If that is the case, why not learn how to SMD solder as well? Nothing nowadays uses through hole, it is almost obsolete! Going the way of wire-wrapping on real breadboards! Heck if you plan to become an Engineer, you're going to need that skill anyway!

i just tinker around for engineer i need basics
i learn thru google the stuff i need for my plans/project

thnx anyway

No, I didn't make those great video's, thats dave from the EEVblog :) I also binge-watch them when I probably should be doing more important stuff lol! :)

You are of course welcome to my youtube channel "Power Max" and see the tutorial vids and weekned projects I post.

Same here. I am 100% self-taught in electronics, though that will soon change. I think you can get in touch with distant PCB manufacturing plants to get some stuff manufactured, it does not have to be local, although that would have been more convenient.

SMD is surprisingly easy, I have done lots of repair work with SMD technology, just make sure to have a good iron, and a hot air gun can also be great for reflowing. You can even buy a small cheap controller to convert a standard toaster oven into a half-decent reflow oven!!! I have not made an entire kit of something with SMD however, it is on my to-do list though.

You can also etch your own PCB from a copper clad board from radio shack, although I have not had much luck with that when I attempted it. I tried the printer toner transfer method, but it requires good gloss paper, and I could not get it to stick that well to the copper, Once I did get a good attempt, I left it to sit in 30% HCL solution and the toner dissolved away and all the copper etched away and ruined the board :(. It was only my first attempt, I am sure I did a few things wrong. I learned sharpie marker dissolves after a few hours.

cant find one with car battery input 11-14v
ready made ones are 220v ac

What is the ratings on the LED for each channel(color)? It appears to be 350mA assuming each channel draws 350mA with approx. a 9V drop, so that when all 9 dies are powered fully the total draw is about 9.45W of power.

A switching LED driver may be best suited, I think one of the one's you listed was switching, so I would look into that further, make sure you do not exceed it's absolute maximum ratings, stuff like that. Based on about 5 seconds of looking at it, it voltage and current output seems good! You can tell it is a switching converter because it has an inductor and diode in it. Maybe if you look around you can find a similar chip in a DIP package, although I know from experience when looking for a lithium battery charging chip that that is not easy. The manufacturing plants are all going SMD nowadays, making it harder to find olf through hole parts.

in my country there are no pcb manufacturing stores, so i should do it all by hand, as i consider myself a novice and still dont own oven liquid solder its a big problem for me,
and its just an experiment to see is it possible to use a 10w rgb led instead a car headlight bulb

thnx for your answer

i know cars dont need color but its just a proof of concept
a 10w led wont produce any usable driving light and the other led require more than 12v.
i will need 3 drivers for every color different voltage
i might end up buying this and the other one make it myself (its a special feeling when its your handmade product)
wish i had the drawing of that driver, i might just put it together myself and just need help to make adjustment for RED color 6-6.4v


3 years ago

Download a free copy of Eagle cad and draw it up! (I do not think you will have much luck asking people to do free work for you here, just sayin.)

i am asking maybe someone has found on the net something similar to my needs, i dont know what to draw, thats the main problem.

Once you download it, you will see how it works. There is one view for a schematic, and LTspice simulation integrated into it too! So you can simulate circuits before sending off the Gerber files to a manufacturing plant! Once the schematic view is done, just click over to the board view, and click and drag all the parts where you want them to be and trace them out. There are lots of great tutorials online that will go through step by step.