Indoor LED Displays

I'll show you steps to make a 7 part screen with LEDS. Combine with Arduino to generate countdown timers, easy text, and much more. I like to make original projects. I searched your whole of instructables and didn't find one similar to this. In fact, I searched google, and did not get a hold of any results. I was thinking for this whenever I cannot get my genuine 7-segment display to function! Love!
It is amazing what you could achieve with LEDs!

The way the project works:
Most of the anodes of 1 row tend to be linked collectively. You will find 3 LEDs in one row. See image. When you supply current toward line, the whole line lights up.
So, connecting all of the cathodes collectively, we used Arduino to plan each line to turn on / off. In the image above, here are the rows that Arduino is turning in: Row 1, 2, 4, 5, 6, 7,

Keep in mind, the way instrucables is initiated, the images come very first, then your explanation.

If you're thinking about making this task, please review this whole instrucable BEFORE you start to get perplexed! And, please, do not forget also check all of the pictures plus the boxes for them.

Here's a video clip of my the show making use of numbers. Another is it displaying the term, ALPHA.

Clip #220 from AJ on Vimeo.

Clip #219 from AJ on Vimeo.

1. Exactly what do you make?
The theory began whenever I was getting frustrated because i really couldn't get my 7 portion screen to work well with one of my ICs, so I decided upon making my very own, to ensure that I'd could get a grip on it in fundamentally in any manner i needed, including easy text.
2. Just how did you ensure it is?
First thing used to do ended up being get-out my sketchbook and draw straight down my a few ideas, and exactly how i might link them together.
We started focusing on this task at 11:30 pm, and kept on going until about 4:30 A.M.. I maintained operating into obstacles, these types of accidentally soldering the positive and negative prospects of 3 LEDs together! We made it with 27 LEDs, a tiny bit of perf board, some fundamental resources, cables, and most notably my newly-bought Arduino. I did this project by myself.
3. Where did you make it?
Really. . . I made this task all-in my room, back at my makeshift work desk, and downstairs inside our workplace (for development Arduino). The more we programmed, the greater amount of problems arose, so I needed to continue operating backwards and forwards between my soldering un upstairs and also the computer down stairs! I wore a path through my carpeting, down the creaking wooden stairs, across the tile, across wooden flooring within my office towards the computer system. Just how did the project connect with other activities within my life? I was capable count this for my schoolwork! I aslo used this task as a show-off to Bravo, (another group in my activities, I'm ALPHA)