Greets all... new around here and could really use a little help. I'm building a 1/9th scale R2-D2 robot from Star Wars and have been racking my brain trying to figure out a way to get it to light up properly. I'm using some fiber optics in a fine grid pattern to get the "logic" panels to light up in a random-ish sequence and just can't get he circuit to work. I found a program called Yenka and designed something that works fine there but when I try to test the circuit on a breadboard it don't work. Here's the situation...
On the front and rear of the domed head are 4 areas that I have to light up (also a steady on holoprojector light on the front but I'm not too worried about that). There are front and rear rectangular "logic panels" that will be lit with fiber optics driven by 2 different color sets of 3 LEDs a piece (front being "blue/white/blue" and the rear being "red/yellow/green"). Now there are also 2 round "mood" lights on the front and rear that will be driven by 2 different colored LEDs (front will be "blue/red" and the rear will be "red/green"). The logic panel LEDs should pulse in a trianglur wave pattern (fade in/fade out) at a rate of once every second. The mood lights however will be doing the same only at a rate of once every 20-30 seconds or so (timing isn't critical as long as it's within the ballpark area).
The power supply I want to use will be either 4 AA batteries (6V DC) or a Universal AC Adapter. I'm trying to stay away from IC chips and do everything with restistors/capacitors/transistors for lack of space. I've been trying to get this to work for the past month and still no luck and I'm not exactly sure what I'm doing wrong. So here's the basic scehematic I came up with:
I know thre's gotta be someone out there that knows what I'm talking about here and could help me get this circuit working. If you set u pthe circuit yourself on a breadboard you'll see. I'm sure I'm missing something here and hope that someone can help me out here because it's driving me crazy to say the least. I've been blogging my entire R2 build here:
Classic MPC R2-D2 Uber Build
I really appreciate any help that anyone can give. Thanks in advance!
On the front and rear of the domed head are 4 areas that I have to light up (also a steady on holoprojector light on the front but I'm not too worried about that). There are front and rear rectangular "logic panels" that will be lit with fiber optics driven by 2 different color sets of 3 LEDs a piece (front being "blue/white/blue" and the rear being "red/yellow/green"). Now there are also 2 round "mood" lights on the front and rear that will be driven by 2 different colored LEDs (front will be "blue/red" and the rear will be "red/green"). The logic panel LEDs should pulse in a trianglur wave pattern (fade in/fade out) at a rate of once every second. The mood lights however will be doing the same only at a rate of once every 20-30 seconds or so (timing isn't critical as long as it's within the ballpark area).
The power supply I want to use will be either 4 AA batteries (6V DC) or a Universal AC Adapter. I'm trying to stay away from IC chips and do everything with restistors/capacitors/transistors for lack of space. I've been trying to get this to work for the past month and still no luck and I'm not exactly sure what I'm doing wrong. So here's the basic scehematic I came up with:
I know thre's gotta be someone out there that knows what I'm talking about here and could help me get this circuit working. If you set u pthe circuit yourself on a breadboard you'll see. I'm sure I'm missing something here and hope that someone can help me out here because it's driving me crazy to say the least. I've been blogging my entire R2 build here:
Classic MPC R2-D2 Uber Build
I really appreciate any help that anyone can give. Thanks in advance!