Hi all,
Im having a painful time trying to get a 74HC590 to simply count the number of pulses.
Outline :
My ideas was to use it to count the output from a sensor and then collect the data to the arduino (the arduino isnt fast enough because it running serveral scripts)
Problem :
The curcuit seems to count like crazy (but too quick to tell if its actually counting up in binary)
Why?!?!?
So i've rigged this up :
LEDs on output Q0 to Q4 (just for testing) (pins 15,1,2,3)
GND (pin 8 )
_RCO (not connected)
_MRC (pin 9) to GND
CPC (pin11) & CPR (pin 13) tied together to switch to +5v
_OE (not connected)
Vcc (+5V from arduino)
All power is supplied by the arduino
Questions :
Have a pinned it out right?
Do i need to use a PWM (pulse signal) on th eclocks? I have 555 chips so could set one up if needed.
I dont have a osciliscope and im finding it a pain to sort. Any help would be great.
Eventually i want to use the curcuit to count the pulses from a optointeruptor.
Thanks in advance
Rob