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large led circuit
Le Chuck:
When do we get to start seeing pics of what you've been working on? Is this all the same project or what? I'm totally curious.
Nephasth:
--- Quote from: SavannahLion on June 09, 2013, 12:49:00 pm ---@Nephasth
I'm looking long and hard at those strips. I like them but the "groups of three" actually works against me.
They'll be controlled via a microcontroller. I was working it out last night and decided to split them into fourth groups. It changes the make up a little bit requires an additional circuit but I get some gains out of it.
--- End quote ---
You could alway make your own circuits with the SMD LEDs so you're not restricted to the groups of 3: ebay link.
SavannahLion:
--- Quote from: Le Chuck on June 09, 2013, 12:53:19 pm ---When do we get to start seeing pics of what you've been working on? Is this all the same project or what? I'm totally curious.
--- End quote ---
It's all the same project... er... most of it I think. I'm not exactly sure if I asked anything about any other ideas unrelated to my current project.
I'm currently working on the electricals and part of the cabinet in an effort to avoid the "it's almost done, now let's see how well it plays." In other words, the electricals and the internals of the cab are being constructed first then the shell is getting "wrapped" around it. The cabinet is going to be unplayable until it is actually completed.
That's the idea anyways, we'll see how well it works. :dunno
SavannahLion:
This is just a taste of what I'm working on.
I'm kind of too lazy to figure out how to convert my cell phone video to something compatible with the forum or upload it to YouTube, so you'll have to be satisfied with the stills. :dunno
I am working on a write up, mostly while I'm at work to avoid erm... during my breaks. :angel:
Short explanation. The photos show red and blue LEDs. The red is what I tested with while trying to figure out my blues. Sharp eyes will spot that the blues are actually what's connected. Note the difference in the green LED on the red board in each photo. LED2 is acting as a light sensor. ;D I worked out a pretty decent auto-ranging solution (I hesitate to call it an algorithm) that seems to work most of the time. When it doesn't, it does correct itself in short order. I'm working on fine tuning the software.
The attached circuit diagram is the most basic and depends on the standardized features found with the board I'm using. It's Arduino compatible so I imagine any Arduino (though I don't use the platform) board has the same features. The components inside the dotted line are crucial to the circuit but are part of the red board itself. I just can never remember how those pins are connected. I did leave out that AREF is connected to +5v through an inductor. Another detail I always seem to forget.
For the curious, the question I asked relates specifically to LED1 though it isn't specifically shown (I still haven't selected a MOSFET to use). I was short on pins which prompted the question, but I decided to design a different circuit which netted me a 17% gain in available I/O pins. None of the information is wasted though, the new design draws heavily from this particular thread and I now have much finer control over the LEDs and have self diagnostics. :cheers:
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