Something strange happens in my circuit......
Think a PIC16F877A were PORTD.1 (pin 20)
is defined as Input (WELDEND VAR PORTD.1)
This pin is pulled to Vdd with a 4.7K resistor and there is (was)
a 0.1uF condenser between the pin to ground (Vss) wich i put
thinking to void noise problem but...
Now the problem....
a signal (Vdd) come to this pin through a n.o. external switch.
When you close the switch no problem
When you open the switch the pic is resetted !!!
Removing the condenser the problem disappear.....
Did you have any idea about.... why?
Steve S.
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