Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy disc?

Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

I have no clue about electronics and don't understand what you just said!

I guess this thread was a bad idea LOL! I was just hoping that someone out there had already done this and was willing to share his set up. I guess not.

DrewSmith007 said:
Here's a video of a project I started years ago for a Cylon tail light assembly for my motorcycle. I pretty much stopped working on it when the bike got repo'd...

EDIT: Shoulda remembered to attach the link: YouTube - ‪Strobe Video.MOV‬‏

It is a 28 LED 7x4 matrix powered solely by an AVR ATTiny 4314 microcontroller (about .5" x 1" x .375") and a 5 volt supply. It only turns one LED on at a time, so it only has current limiting resistors on the 4 rows.

Your 8x8 array would need 17ish volts to have them all on at once (assuming a 2.1 voltage drop for 8 series LED's). The micro cant handle that voltage, so the rows and columns would have to be sourced and sunk through transistors.
Click to expand...
 
Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

I suggest getting a project kit called "What's a microcontroller?" from parallax. You can get it at radioshack (at least you could at one point) or at fry's if you have one near you. Of course it's available online as well. Appx $100-120. Worth it if you've ever wondered about complex electronics. There's also arduino, but I don't know anything about them or their educational kits. Probably cheaper, but they use a version of C, which is a little tougher to rap your head around.

The parallax kit will take you from no experience, to programming microcontrollers very quickly. It uses a modified version of basic, so if you know how to program in basic you'll catch on really quickly.

I would love to help you develope something like this, I just don't really have the time right now...

Good luck!
 
Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

And it wasn't a bad idea at all. At least you have an idea where to start!
 
Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

kurtyboy said:
All the info is in my first post. No sound, just lights.
Click to expand...

Not enough info for me to make it or give more precise input, as you really didn't provide any information about fitment or available working space beyond the 3cm x 5cm... If you are serious more info would be needed for example where is this 3x5 void in the disc located, how long do the LED wires have to be, what size led, how much room is there to route wires and LEDs inside, does the battery need to fit in the 3x5 space as well, does it already have a battery compartment, how are the LEDs to be laid out? I can easily make a 60, 70, 80 led light sequencer on a board about 2cm x 2cm with ease, slap it on a 9 volt and it fits in your 2x3 compartment easily, but there is clearly more involved to the final design...

Your 8x8 array would need 17ish volts to have them all on at once (assuming a 2.1 voltage drop for 8 series LED's). The micro cant handle that voltage, so the rows and columns would have to be sourced and sunk through transistors.
Click to expand...

That would be an inefficient approach, there are more efficient ways to accomplish this...
 
Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

exoray said:
That would be an inefficient approach, there are more efficient ways to accomplish this...
Click to expand...

Care to elaborate on that a little bit? I agree, it's inefficient, but the only way I know how to do it. I would love to be able to do this stuff without hours upon hours of programming...
 
Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

approx. 3cm x 5cm for the driver only. There is separate space for the battery.

The entire disc diameter is only about 8" and there is plenty room for the two rings of LEDs and plenty room for the wires. I would assume 3mm LEDs or smaller.

As for LED layout I thought it was pretty clear from the youtube link I posted of propmaster2000's disc. One ring of LEDs around the outsisde of the disc and another near the center.

Your solution sounds perfect! A 2cm x 2cm board connected to a 9v battery with pairs of wires coming off for around 70 individually addressable LEDs. As long as the sequences can be programmed via PC then that's all that would be needed. ;)

exoray said:
Not enough info for me to make it or give more precise input, as you really didn't provide any information about fitment or available working space beyond the 3cm x 5cm... If you are serious more info would be needed for example where is this 3x5 void in the disc located, how long do the LED wires have to be, what size led, how much room is there to route wires and LEDs inside, does the battery need to fit in the 3x5 space as well, does it already have a battery compartment, how are the LEDs to be laid out? I can easily make a 60, 70, 80 led light sequencer on a board about 2cm x 2cm with ease, slap it on a 9 volt and it fits in your 2x3 compartment easily, but there is clearly more involved to the final design...



That would be an inefficient approach, there are more efficient ways to accomplish this...
Click to expand...
 
Re: Electronics gurus: Anyone know a suitable LED driver -->the perfect Tron Legacy d

DrewSmith007 said:
Care to elaborate on that a little bit? I agree, it's inefficient, but the only way I know how to do it. I would love to be able to do this stuff without hours upon hours of programming...
Click to expand...

Only have one LED on at a single moment as you rotate through the lights but complete the loop fast enough so that the on/off frequency is beyond the human eyes ability to see, thus you have the illusion of multiple LEDs on when in fact only one is on at a single time...

One LED on at a time + µ overhead is probably about 25mA @ 3-5 volts total draw...

As long as the sequences can be programmed via PC then that's all that would be needed.
Click to expand...

That drives the cost up exponentially as computer software now has to be written...
 
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