16 Swtiches & 1 Multiplexer
We have everything working with limited number of switches, meaning we have been using a total of 7 switches. This has been going well and I thought before we jump right into wiring the mat we need to do a test with all 16 switches. So, the morning was spent making long switches labeled with masking tape inorder to keep track of what was what.
After the switches were made, I wired them all to the breadboard through the multiplexer.
Everything was working great until I got about 11 switches into the motherboard. This suddenly cause a problem with the rest of the switches. For some reason one switch would turn on 2 switches then cause the switched it wasn't suppose to turn on to not work. So it was something like this:
Switch 1: Turned On
Switch 2: Turned On Switches 2 & 3
Switch 3: Didn't Work
Switch 4: Turned On Switches 4 & 5
Switch 5: Didn't Work
Switch 6: Turned On Switches 6 & 7
Switch 7: Didn't Work
Switch 8: Turned On Switches 7 & 8
Switch 9: Didn't Work
Switch 10: Turned On Switches 10 & 11
Switch 11: Didn't Work
Switch 12: Turned On Switches 12 & 13
Switch 13: Didn't Work
Switch 14: Turned On Switches 14 & 15
Switch 15: Didn't Work
Switch 16: Turned On Switches 16 & 1
So, inorder to troubleshoot, I took all the switches out and put them in one by one and tested them until I figured out where they went wrong. They seemed to be fine until Switch 11, then the same problem began. So I took it out and started at 16 then down and it seems like Switches 12 & 11 are causing the problem with all the other switches. Why? Good Question. I figure it could be the breadboard, or something I can't think of right now.
Hopefully, this will not cause too much of a delay and will get figured out rather quickly.......hopefully.