floating point at pins of microcontroller
i am doing ' lift control using PIC16F877A'. the connections have been made to the pic and a test program to make a LED blink is given. the LED blinks in a weird fashion.
i checked the voltage at the output pin for LED and its a floating value....is there any reason for this?? how do i solve the problem??
i checked the voltage at the output pin for LED and its a floating value....is there any reason for this?? how do i solve the problem??
Replies
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shahrulWhat do you mean floating value?
If turn 'ON' LED with high logic (5V), turn 'OFF' LED with low logic (0V), do a LED blinking offcourse the output voltage neither 0V nor 5V. The voltage is between 0-5V depends on your blinking duty cycle. -
reachrkataIf the blinking rate of the LED is very fast and you are using a normal multimeter to measure the port signal, the value you are reading is the Average of the fast on-off signal from the port. It is better to use an oscilloscope to do measurements.
-Karthik
😁 -
Harshad ItaliyaCan you please post your Circuit diagram so we can study it... there might be problem in software side.. can you post it also
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