There is probably an extremely easy way of doing this that I am missing.
Using a 4017, I am able to verify my counting works by breadboarding some LEDs to the respective outputs.
I have a stopwatch that requires a low to start and another low to stop. Normal stopwatch, so if the low never goes high, it will still be timing. As it stands right now, once output 0 goes from high to low, the timing starts. It cycles through all the other LEDs and the stopwatch continues running. Go back through the cycle, LED 0 lights up and as it goes out, the timer stops timing. Say I want it to start on the dropout of LED 0 and stop on the dropout of LED 8...
Should I just pop 2 diodes in where the "*"s are or is there a better way of doing this? SW is the stopwatch connection to the start/stop button. This is my first shot at this, and after about a day and a half of 4017 and quad comparitor searching, mind mind is pretty much fried. TIA
Using a 4017, I am able to verify my counting works by breadboarding some LEDs to the respective outputs.
I have a stopwatch that requires a low to start and another low to stop. Normal stopwatch, so if the low never goes high, it will still be timing. As it stands right now, once output 0 goes from high to low, the timing starts. It cycles through all the other LEDs and the stopwatch continues running. Go back through the cycle, LED 0 lights up and as it goes out, the timer stops timing. Say I want it to start on the dropout of LED 0 and stop on the dropout of LED 8...
Code:
| 4017 |
|__________|
0 1 2 8 9
| |
| |
R1 R1
| |
LED LED
|_*____*_|
|
|
SW
|
GroundShould I just pop 2 diodes in where the "*"s are or is there a better way of doing this? SW is the stopwatch connection to the start/stop button. This is my first shot at this, and after about a day and a half of 4017 and quad comparitor searching, mind mind is pretty much fried. TIA