#I don't know what I'm looking for, or what is the term for it, and i've been searching till 2AM and still no solution.
so, I have a push button and I want an output that is active high and gives a pulse when I depress the button to HIGH.
Figure:
`````````````````````````long press``````````short press
Push Button/ input = ________--------------_________--_______
Output..................= ------------___-----------------------___--------
_----- HIGH
--___ LOW
#I am gonna connect it to DOWN pin in 74LS192 Up/Down counter. pulse should be enough to activate the DOWN pin (maybe 100ms or less) and must be HIGH all the time.
The reason why I need this is because if the DOWN pin stays at LOW, when I activate UP pin, it counts double or triple. It is when I press and hold the push button, giving LOW to DOWN pin, then count UP, it messed up until I release the DOWN push button.
My outputs are Clean when I tested them.
555 monostable doesn't seem to work on what I need. I don't know if I did something wrong.
note:
My time and resources are limited. Logic ICs, 555, Caps, Resistors, and 2N2222 Transistors, and I think it's enough. I can buy or Order some components if needed, but it takes time to arrive, so.. meh.
I am actually making a Coin counter for our project. and I want to avoid multiple counts on a single coin when the Start button (down count) is being depressed.
so, I have a push button and I want an output that is active high and gives a pulse when I depress the button to HIGH.
Figure:
`````````````````````````long press``````````short press
Push Button/ input = ________--------------_________--_______
Output..................= ------------___-----------------------___--------
_----- HIGH
--___ LOW
#I am gonna connect it to DOWN pin in 74LS192 Up/Down counter. pulse should be enough to activate the DOWN pin (maybe 100ms or less) and must be HIGH all the time.
The reason why I need this is because if the DOWN pin stays at LOW, when I activate UP pin, it counts double or triple. It is when I press and hold the push button, giving LOW to DOWN pin, then count UP, it messed up until I release the DOWN push button.
My outputs are Clean when I tested them.
555 monostable doesn't seem to work on what I need. I don't know if I did something wrong.
note:
My time and resources are limited. Logic ICs, 555, Caps, Resistors, and 2N2222 Transistors, and I think it's enough. I can buy or Order some components if needed, but it takes time to arrive, so.. meh.
I am actually making a Coin counter for our project. and I want to avoid multiple counts on a single coin when the Start button (down count) is being depressed.