So I thought I would try out another flashing LED circuit using a 4026 and 555 IC chip while waiting for another 4017 replacement chip for the LED chaser I am having problems with . This was my first attempt using a perfboard. Well the first time I applied power the thing worked! I was quite proud of myself because I figured out the layout of all the components on my own. I played around with a couple different capacitors until I found a blinking rate that I liked. I then installed the circuit in an art piece I am working on. I tested it periodically to make sure I didn't short anything out while making everything fit. So far so good. The next day I installed a power switch and thats when the circuit stopped blinking and would just light some of the LEDs. I did all the usual inspections and re-soldering and also replaced the capacitor but nothing changed. I did however notice that when I switched the power on and off that the LED's being lit would change. I did some experimenting with wiring the power points of the circuit up to one of the output pins of the same timing circuit on a breadboard. I discovered that I could get the circuit's LED to blink somewhat "randomly" again so the project is not a total wash, but I sure wish I knew what had happened to the circuit to make it quit working correctly. Any ideas or suggestions on why this may have happened and how to troubleshoot it?
Here are the schematics and my circuit layout (a few changes were made on the fly when soldering it up)
Here are the schematics and my circuit layout (a few changes were made on the fly when soldering it up)
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