I'm going to create a Word Clock after being inspired by the Biegert and Funk Qlocktwo, so after some googling I have found some guides on how to do it. But the problem is that most of them is made by creating their own arduino board and I decided to not do that but instead buy a Arduino Uno. So now I need help to check if I have understood the original schematics correctly when I redid it for a real Arduino. I can also add that this is my first ever project using an Arduino.
This is the schematics I decided to copy: http://www.highonsolder.com/display/ShowImage?imageUrl=/storage/WC/Word_Clock-Schematic.JPG?__SQUARESPACE_CACHEVERSION=1294531692634
and this is my version of it: http://gyazo.com/57d5cd408307249ad8340c2d4698423d
Also concerning the LEDs I'm not quite sure which resistors to use, so if anyone could tell me which ones to use/calculate which ones to use it would be much appreciated. I think I will power everything with either 9v/12v not sure which one would be most suitable for this project. The LEDs are Size: 5mm Forward Voltage: 3.2-3.4V Current: Not sure since the package didn't say anything. But my guess would be 20mA
As far as I have understood I calculate the resistor value like this: (Power Supply Voltage - LED Voltage)/LED Current But I'm not sure how to calculate if there is more than 1 LED. They will be connected like this: http://gyazo.com/9725e265c29a8a00b89b0c30429641da
I would assume that it wouldn't change considering they are connected parallel. As I said previously it would be much appreciated if someone could tell me if this is correct or wrong.
Thanks in advance