Easy DIY LED Driver
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- Опубліковано 16 жов 2024
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In this video we make a DIY High Power LED driver for a 10 watt LED. We use an android app called "electrodroid" to help calculate the resistor values we will use for our 2 LM317s.
From my understanding of working with LEDs, is that they are current sensitive and only need current regulation to produce the correct and constant lumen level. It was interesting to learn about the "Electrodroid" app and how to use the LM317 for Voltage or Current regulation. My home's outside LED lamps each have a single module that converts 120VAC to a constant current DC source to run the leds wired in series.
I keep finding these wonderful nuggets of knowledge on your channel!!!
this is the sort of project I've been looking for. thanks
Always love your approach to curcuits,makes things easy.Thank You.
Thank you!
After seeing the app you used I hit the app store and got it, I'm very pleased with it, extremely useful, intuitive and a nice GUI. Very slick indeed, thanks for the tip, (even all sorts of Arduino pinouts for many boards). Cheers.
Nice! I think that is one of your best videos. That electrodroid looks really handy.
Why are you so clever, it's just not fair. At least I can steal some of your knowledge, just gotta find a way to keep it. As always, many thanks.👍😷🇬🇧
I said not another CV CC 317 tutorial. Then you used the app. Even when I think you will disappoint - you don't. BTW - I guess you love your OWAN just as much as I now do. Another two thumbs up.
Thanks, I am glad yo liked it. I use the Elctrodroid app every day. Makes me seem smarter than I actually am lol
Why would you need a power indicator LED? It's pretty easy to tell when this thing is on!
CoolDudeClem Then you could check if the power led is off that there’s something wrong in the circuit, something failed.
I used it to power a 5 Watt COB with the same power usage and it worked well.
I was afraid of the resistors getting to hot as the first thing I read was using them would not work and I need to Buy a driver. I think they were just trying to get me to. Buy more stuff.
Thanks and I love watching your vids.
I'm looking to use a leds that have 1 positive and 4 negative for white and RGB. The 74hc595 doesn't works but I heard theres another ic that could do the job maybe you could do a video on it and use a fancy program. Like fritzing. Cheers
how long does it last
I need some drivers for a couple 12v led lights switching on from a 12 v battery but staying on for about 4 hours
can you adjust the brightness with a PWM ?
This tutorial was delivered so well. Subscribed!
Awesome! Thank you.
Easy, yup. How efficient do you think this setup is?
great instruction video! i still have a question... im complete noob in
electronics, but i can build things following instructions... i want to
make my own led worklight from makita 18V 9A battery. now the question
is about the amps... can i build by the same scheme you are building
here or do i need any other parts because of higher amp input? i did use
electrodroid app and i cant see anywhere to adjust amp input. for volt
input i adjusted 18v and i dont see any difference on my app comparing
to your app. I also want to make my worklight a bit stronger as 10w...
was thinking about 30-40w... how does this affect in to the building of
driver circuit? also how do i connect led chips? parallel? thanks again
on your time and hopefully for answer as well!
Email me arduino0169@gmail.com
Thanks a lot for this
Excellently easy to follow. Thanks!
The only possible problem I can see is the resistor on the current control stage will need to be a much higher wattage.
I'm a little confused about not needing the voltage regulator, say you use a laptop PSU at 19,5 V (which as I understand is constant voltage) and you have 4 LEDs with a fv of 3V @ 1 amp would, it adjust volatge to 12 V ? since the circuit only draws 12V ? nice vid by the way
and is there no voltage drop over the LM317 ?
Do you even need the first regulator?
Don't think you can get 11V out with only a 12V source, and that's using a low drop out regulator. I have six of these on a heatsink that is powered with an old track light transformer. With no regulation at all, driving them at 750ma each with no problems for years. I don't think you need current regulation unless you are driving at full power.
You could skip it. This is just an example of the classic circuit.
If you use it on an automotive, the charging voltage jumps up to 14.7v I think that is what the first regulator is for.
Hi!
I bought a led driver which reqiures 5-32vdc input. Can i simply use an adapter with an output of 5vdc/2.5A? If so, what's the difference if I'm going to use like 12v or +32v as an input of my driver? Thanks!
"Good", very good 😉
Loves these videos, pls don't stop!!!
madmac wing new videos every day at 5pm eastern.
Are you using dc source for making this circit
are lm317s gets too hot ?
Can I just use a magnetic transformer and a bridge rectifier?
Hi mate.
A video request... I would love to learn how to build my own cc led driver with pwm functionality. I'm using mean wells buck led drivers and they work great but I would like to be able to build with different output current.
kapoo!! saludo of argentina
Great instruction. Thks.
Does anyone know if you can get JLCPCB or someone else to mass manufacture this circuit? I want to make a product where the led doesn’t break after 5 minutes due to being overdriven...
Ty bud.
To do this in parallel with 5 more 10W LED’s how many more LM137 current regulators would you need?
Do you mean connecting 5 more leds all in parallel with each other?
I thought the big 10W led was quite a good indicator that it was on, no need for the other one! :D
stewartrv The indicator LED is in case the 10W isn't working, at least you will know you have power.
I tried hooking my high powered LED right up to my bench power supply and it didn't work. Do I need an LED driver?
No it should work , led driver are used when you have to use leds for long periods of time
Stupid question maybe, but isn't your sketch wrong? Should the resistor not be placed on the adjust pin, i calc at least a 8w resistor otherwise. If I look at the build the resistor is on the adjust pin. I have a bad habit of drawing the circuit and not looking at the build sometimes, but it felt not ok, a 1/4w resistor in series with a 10w led ;-) . I apologize if i'm wrong.
Check out: www.ti.com/lit/ds/symlink/lm317.pdf
Look at figure 8.3.7
Finally got it, "I" may be big but "U" is a lot less. To calc "P" for Rs = 1.25V*0.800A=1W resistor power consumption. Thanks, you got a new subscriber ;-).
Now what would be the best way to be able to dim the led?
Run PWM and change the duty cycle
the 1R6 should not be a 1/4W - with 800mA it will dissipate more the 1W of heat
Quick question isn’t that cc Circuit going over the rated wattage of the resistor.
+RJ Anderson probably, works ok for the demo. You would need a higher rated resistor to run continuously.
Thanks for the great video!
I'm going away now.
I plan to build this circuit 🙄
the second LM317 is enough.
Makes no sense the first voltage regulator
Yep.
Nice sir (y) - but how about @60v & @100mA ?? Please - make tutorial about dat ;)
This seems like a terrible design, while easy the regulator has to dissipate 20% of the power.
LM317's are usually used to create reference voltages rather than just dropping the power.
Now add potentiometer
Jesus. Those components must be heavy. All that hard breathing just moving your arms?!?
He's getting head from your mom under the table
I am trying to make a driver for a 12v 75w 30A led with the LM317 work ?
great instruction video! i still have a question... im complete noob in
electronics, but i can build things following instructions... i want to
make my own led worklight from makita 18V 9A battery. now the question
is about the amps... can i build by the same scheme you are building
here or do i need any other parts because of higher amp input? i did use
electrodroid app and i cant see anywhere to adjust amp input. for volt
input i adjusted 18v and i dont see any difference on my app comparing
to your app. I also want to make my worklight a bit stronger as 10w...
was thinking about 30-40w... how does this affect in to the building of
driver circuit? also how do i connect led chips? parallel? thanks again
on your time and hopefully for answer as well!
Great question,a shame that nobody tried to answer it...