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Unread 05/05/2011, 01:07 AM   #1
oceanicsquire
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Meanwell ELN-60-48P & ARDUINO???

Hey guys I recall reading somewhere that the Meanwell ELN-60-48P driver are more difficult to incorporate with an arduino style controller than the 48Ds?

Could anyone explain if thats true of not or share their own experiences.


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Unread 05/05/2011, 06:40 AM   #2
TheFishMan65
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IMO not true. The Arduino supplies a 5 volt PWM signal. All you need to do is convert that to 10 volts with a transistor for the P series. Most people (I believe) run the D in a PWM mode when connected to an Arduiino.


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Unread 05/05/2011, 07:06 AM   #3
LargeAngels
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Also agree not true. Many people run the D's just like the P's with Arduino. Just power the Arduino with a 10V supply and then use the Vin pin on the board to supply the transistor like TheFishMan65 said.


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Unread 05/05/2011, 07:32 AM   #4
TheFishMan65
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I think the issue is that with the P 25 is 10% 51 is 20% up to 255 is 100% for brightness. But with the D a mapping is needed and is posted in one or more of the Arduino LED build threads.


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Unread 05/05/2011, 08:32 AM   #5
LargeAngels
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The P does have lower limits of 11% and the D lower limit is 5%.

Here is one thread building an Adruino and a simple program using the P or D with simple step functions to ramp the light up and down.

http://www.reefcentral.com/forums/sh....php?t=1987110

To use the full 0 to 255 range of pwm a different program for the ramp is needed and a different LED driver is needed if you want to go bellow the 11% of the P.


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Unread 05/05/2011, 09:06 AM   #6
TheFishMan65
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LargeAngels, I thought the P went all the way down and the D was 10%, but don't remember where I got that so can you link to your information?


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Unread 05/05/2011, 09:19 AM   #7
LargeAngels
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http://www.meanwell.com/search/eln-60/default.htm

Last page. I didn't know either until I got one. That is why I ordered the parts to build the 3 CAT driver.


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Unread 05/05/2011, 09:37 AM   #8
TheFishMan65
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Thanks. To clarify the 5% on the D is if you use 0-10 volts. If you run it in a PWM mode I think it has a higher (or maybe same) limit as the P.

Now the CAT I understand


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Unread 05/05/2011, 10:27 AM   #9
LargeAngels
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Quote:
Originally Posted by TheFishMan65 View Post
Now the CAT I understand

Yes, I read through all +60 pages of the thread. My boards are on their way. Thanks for all the info on that.


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Unread 05/05/2011, 11:13 AM   #10
oceanicsquire
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thanks gentlemen, I think I'll be using the P since I already bought it!

kind regards


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Unread 06/23/2013, 03:53 PM   #11
patrikk
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sorry if I bring this thread back from the dead I felt like it was better to keep the info in one thread instead of having some info in multiple thread without having the hole picture.

My question is how would I connect the Meanwell ELN-60-48P drivers with my Arduino UNO?
I read :
Quote:
Originally Posted by TheFishMan65 View Post
IMO not true. The Arduino supplies a 5 volt PWM signal. All you need to do is convert that to 10 volts with a transistor for the P series. Most people (I believe) run the D in a PWM mode when connected to an Arduiino.
ok so I need a transistor which one is needed or would be the better choice? then how should it all be connected the drivers Arduino the extra 10V PS and the transistor? I was planing on using a PWM shield for my Arduino with will be connected to pin 4 and 5 on the UNO.


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Unread 06/23/2013, 07:52 PM   #12
Numlock10
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patrikk,

This is the diagram that I used to connect my ELN-P drivers to my Arduino.



I used an N2222 for Q1.

Have never had any issues. It does invert the siganl so you just need to fixup the code so 0 is full power and 255 is off.


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Unread 06/24/2013, 03:58 AM   #13
patrikk
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Quote:
Originally Posted by TheFishMan65 View Post
IMO not true. The Arduino supplies a 5 volt PWM signal. All you need to do is convert that to 10 volts with a transistor for the P series. Most people (I believe) run the D in a PWM mode when connected to an Arduiino.
Quote:
Originally Posted by Numlock10 View Post
patrikk,

This is the diagram that I used to connect my ELN-P drivers to my Arduino.



I used an N2222 for Q1.

Have never had any issues. It does invert the siganl so you just need to fixup the code so 0 is full power and 255 is off.
thank you. when you mention that you never had any problems, have other people had problems with that setup?


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Unread 06/24/2013, 04:06 AM   #14
Numlock10
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Not that I know of. I had 6 strings and all of them worked perfectly.


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Unread 06/25/2013, 05:10 AM   #15
patrikk
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Quote:
Originally Posted by Numlock10 View Post
Not that I know of. I had 6 strings and all of them worked perfectly.
ok great.

Did you use your own code or some other?


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Unread 06/25/2013, 06:09 AM   #16
Numlock10
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I used my own code, an earlier version then the one that I have posted recenlty.


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