Hooking up a Schmitt trigger (74HC14)
I need to hook up a 74HC14 to clean the signal from a QRB1134 IR sensor. I think I know how but I need to make sure. Could it really be this simple:
*Connect pin 14 to 5V (from Arduino)
*Connect pin 7 to ground
*Connect pin 1 to the signal output of the QRB1134
*Connect pin 2 to the Arduino analog in
*Place a .1uF cap between the 5V and the ground wire
Here is the datasheet and an example I used:
www.robotokulu.com/ROBOTOKULU_dosyalar/74HC14.pdf
www.lynxmotion.com/images/data/tra01v7.pdf
@ Sun, 2009-11-22 11:10
Yes, it is that
Yes, it is that simple.
However, might I suggest you:
• Connect all unused inputs to ground or V+ to prevent troublesome inverter oscillation.
• Use a digital input instead of analog, since you usually have more digitals free, and you don't need analog since the inverter only outputs digital signals.
@ Sun, 2009-11-22 11:43
ok..thanks
So it isn't actually that simple..meaning I need to connect ALL unused inputs to ground. I guess I should have gotten the little brother you mentioned since I don't really need 6 inputs and outputs. Anyway this may be the reason I'm getting multiple high/low clicks sometimes during a transition?!
And it is my plan to use a digital input off course since eventually I wanna use interrupts to detect the transitions...if possibl...
@ Sun, 2009-11-22 11:46
Oh yeah, actually now that
@ Sun, 2009-11-22 10:42
Nevermind fellows