Meanwell ELN-60-48P & ARDUINO???

[oceanicsquire]

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.

[TheFishMan65]

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.

[LargeAngels]

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.

[TheFishMan65]

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.

[LargeAngels]

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.

[TheFishMan65]

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?

[LargeAngels]

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.

[TheFishMan65]

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

[LargeAngels]

Originally Posted by TheFishMan65

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.

[oceanicsquire]

thanks gentlemen, I think I'll be using the P since I already bought it!

kind regards

[patrikk]

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 :

Originally Posted by TheFishMan65

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.

[Numlock10]

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.

[patrikk]

Originally Posted by TheFishMan65

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.

Originally Posted by Numlock10

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?

[Numlock10]

Not that I know of. I had 6 strings and all of them worked perfectly.

[patrikk]

Originally Posted by Numlock10

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?

[Numlock10]

I used my own code, an earlier version then the one that I have posted recenlty.