I am starting this thread to remind some of you to always check the diagrams in the forum before building them. I found this one while I was doing a lab experiment. The professor showed it to us and I thought I should share. This is what he gave us:
The problem is the way the reszistors are connected to the LEDs. They should be in series with them and the way they are would eventually burn the diodes. Here it is how it should be:
I know this is rather simple, but it is good to remind our fellow beginers to not take everything for truth.