26-03-2012, 07:02 AM
Hi! I'm VERY green to Electronics! I have a co-worker Retiring end of May and I had a thought of making a sign using 3mm leds and 9 volt batteries: HAPPY RETIREMENT GREGG
I'm trying to get HAPPY and GREGG to blink while RETIREMENT will light one letter at a time leaving them on till last letter (T). I got a variety of resistors,transistors,diode,and capacitors. I have a couple of each of these:cd4017,cd4017be quad flip/flop, ne556n, ne555, cd4026, cd4046, cd4049, attiny 13au-10pu. I think the attiny needs to program. I don't have. 10 letters to blink and 13 to run as message display like knight rider but only one way then reset to start again. I have this stuff available. I am having soo much trouble trying to find diagrams of what I really need. I found a diagram (running message display) using all the items that I have (555 timer and the 4017 among other items that are lived above) but it is only set up to do 7 letters not 13. I'm concerned that either the circuit will burn up or not light enough letters to get this done.