Excellent! Why? I Like how you showed the physical wiring on the White board. And then explained how the circuit works (closed / open). I have watched 10 videos on switch bounce, you're explanation was way better than the others.
@punjabilog
3 жыл бұрын
Thank you very much Sir this is brilliant video.....
@parapos
5 жыл бұрын
great explanation,thanks.
@nosaltiesandrooshere7488
4 жыл бұрын
👍 & subscribed
@guntherschadow9383
4 жыл бұрын
Its not working without a Schmitt-trigger. try it with pieces, 74LS04 TTL and inverter, hook that to a 74LS161' clock input pin 2, pins 3-6 on ground, pin 1 and 7 on high, 8 GND (of course) 9 and 10 on high, 11-14 stick LEDs in it (no worried about current limiting resistors, not needed), 15 (RCO) not connected, and 16 on high (of course). Now watch how regardless of how you choose your R and C, you can hardly make a single count increment happen. Also, if you use 1 MΩ pull up resistor, it's doesn't even get a real logic high signal, 74LS, not 74HC, maybe HC works, but LS doesn't. The reason why folks with Arduinos can do this is that they have Schmitt trigger inputs. With TTL you'd have to use a 74LS14 hex inverter, or other packages with Schmitt trigger inputs, which is the minority. Unfortunately RC debouncing has severe limitations. And the reason is their slow wiggly rise through the forbidden zone between 0.8 V and 2 V. So, you said Schmitt triggers were not for this purpose, but I think you'll have to take that back.
@simplyput2796
4 жыл бұрын
Well yes, this video is nearly two years old and I have learned quite a bit since then. Still have a lot to learn, too, but I have discovered the joy of hysteresis.
@sebastianfraga2001
3 жыл бұрын
I also had my doubts about the Schmitt trigger. I didn't understand how the capacitor by itself could solve the problem because yes it filters the bouncing from the switch but when the voltage is in the "undefined zone" you may read a 1 or a 0, so you do need the Schmitt trigger right? Correct me if my reasoning is wrong I am working on a project for Uni where I need to justify this in great detail so every info counts. Thanks!
Пікірлер: 7