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PostPosted: Sun Jun 09, 2013 12:42 am 
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Joined: Mon Dec 10, 2012 5:46 pm
Posts: 4
Have you got an APEX or Profilux lighting controller? Want to use it with an LED driver that only accepts 5V PWM? Here's how to get around the problem. Build your own 10V Analog/ 5V PWM convertor! This convertor uses the ever popular Atmel328 micro-controller as an Analog to digital convertor, so if you're familiar with Arduino based projects it should be easy. Here's a photo of the finished convertor-

Image

I've attached all the project files including the firmware and a parts list. The Gerber files can be sent directly to ITeadstudios in China for PcB production http://imall.iteadstudio.com/
The Board (.brd) and schematic (.sch) files can be viewed and modified by using the EAGLE software. Don't have EAGLE? Get the freeware version here- http://www.cadsoftusa.com/downloads/?language=en
The software used to program the convertor was written in Arduino 23. You can down load the Arduino IDE here- http://arduino.cc/en/Main/Software ( look for version 23. Arduino 1.0 and up is not compatible)

I'll answer more specific questions if needed, so just give me a yell!


Attachments:
Gerber files for ITeadstudio .zip [54.37 KiB]
Downloaded 189 times
Image,Partslist,& Controller Sketch.zip [22.22 KiB]
Downloaded 225 times
.Brd&.Sch files.zip [59.25 KiB]
Downloaded 202 times
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PostPosted: Sun Jun 09, 2013 4:50 pm 
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Joined: Fri Nov 30, 2012 1:54 pm
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Nice! So what's the advantage of making this vs buying an arduino uno? I'm guessing cost?

The interface is more clear also.


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PostPosted: Sun Jun 09, 2013 8:30 pm 
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Joined: Mon Dec 10, 2012 5:46 pm
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mistergreen wrote:
Nice! So what's the advantage of making this vs buying an arduino uno? I'm guessing cost?

The interface is more clear also.


This convertor seems to be more popular with the Reefing crowd, as a lot of them have already invested heavily in commercially built "Reef tank control systems" E.g. NEPTUNE, PROFILUX, Ect.. These controllers are older designs that work very well, but they're outputs tend to be analog in nature rather than Digital. The trouble comes when users of these control systems try to adapt to controlling newer Led drivers that rely on a 5V PWM signal. Some of the original manufacturers have produced "adapter modules" to satisfy demand from their customers, but they tend to be very overpriced, if they're available at all. That's why I created this little Gem. It's cheap to build, easy to install & pretty much "set and forget"


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