i made a timer with PIC that include 2 digit 7segment and three pushbuttons for setting time
this operate well and completly that i programed and test on breadboard
any number taht user sets with pushbuttons it begin to decrease each 1 second and when reaches zero the output is on
but when i connect relay (bobin 5 volt) circuit to output of micro after reach zero it works again (like a loop).
whats the problem?
the circuit attached in pdf file.
this operate well and completly that i programed and test on breadboard
any number taht user sets with pushbuttons it begin to decrease each 1 second and when reaches zero the output is on
but when i connect relay (bobin 5 volt) circuit to output of micro after reach zero it works again (like a loop).
whats the problem?
the circuit attached in pdf file.