Monday, February 23, 2009


Today is the day. I have finally got the Logic Display figured out. The solution was actually very simple....use the flasher circuit you already have. That's right, and I don't know why I just didn't stick with it in the first place, I'm talking about the PIC LED Flasher I bought back when this blog first started

Look familiar? I also tried to use it with the first prototype Logic Display (see the June 28th, '08 through November 4th, '08 blog postings). Using it meant adding 2 more LEDs to the circuit, but oh well. So here are the pictures and videos of the results:

The plastic tube is to keep the light from the LEDs contained and focused on the Fiber Optics which will be hanging above the LEDs through the other end of the pipe. Next I just have to prep the fiber and we will be done.


Sunday, February 15, 2009

Logic Display, take 3

Well I found the problem with the flasher circuit for the Logic Displays....I had the LEDs backwards, thus I had the battery backwards so the LEDs would light up backwards thus the circuit was connected to the battery backwards thus it wasn't working. Once I fixed the LEDs polarity and had the battery connected the right way the circuit worked....but then a new problem presented itself. If you look at the diagram (see the Jan. 11 posting) there's a componet named "P1." This part is a button. Once you connect the power, you have to puch the button until the last LED is lit and then releasing the button starts the chase sequence. I can't see having to always push a button on R6 just to make one set of lights work everytime I turn on the power. REJECT! Luckly, I have already found yet another canidate to flash the lights for the Logic Display, but before I give any more details, I'm going to test it first. Till then....


Sunday, February 8, 2009

Would it help if I got out and pushed?

[Title is quote from SW: Ep5: ESB].

Well....I tried the flasher circuit for the Logic Displays today....and the LED's just stayed on....all of them. No blinking at all. Either I've done something wrong or the circuit is bogus. I'll keep trying and hope I find the problem, but if not then it's back to the drawing board. Maybe I should just buy a logic display....


Wednesday, February 4, 2009


I finally got the remaining parts I need to make the prototype Logic Display circuit. I'm off this Sunday so that's when I will mess around with it.

Till then....