How long does a pulse on an Arduino last?

How long does a pulse on an Arduino last?

pulseIn can measure pulses from 2-3us to 3minutes. It provides a simple way to measure signal periods on any pin. There are in fact two versions of the function explored below (pulseIn and pulseInLong) one uses interrupts and one is coded in assembler.

How does pulsein work on an Arduino pin?

Description Reads a pulse (either HIGH or LOW) on a pin. For example, if value is HIGH, pulseIn () waits for the pin to go from LOW to HIGH, starts timing, then waits for the pin to go LOW and stops timing. Returns the length of the pulse in microseconds or gives up and returns 0 if no complete pulse was received within the timeout.

Is the pulse width of an Arduino an estimate?

However, pulseIn has been calibrated empirically (by observation) so its output is an estimate but it seems to be quite a good one for lower pulse widths. The problem with long pulse widths is, as the errors build up, so the error in the reported pulse width will increase.

What kind of data can I read from Arduino pulse?

pin: the number of the Arduino pin on which you want to read the pulse. Allowed data types: int. value: type of pulse to read: either HIGH or LOW. Allowed data types: int. timeout (optional): the number of microseconds to wait for the pulse to start; default is one second. Allowed data types: unsigned long.

How many microseconds does Arduino pulsein measure?

The Arduino pulseIn function measures the time period of a pulse in microseconds and can measure pulses from 2-3us to 3minutes. It provides a simple way to measure signal periods on any digital pin.

What are the parameters for serial.print ( )?

An optional second parameter specifies the base (format) to use; permitted values are BIN (binary, or base 2), OCT (octal, or base 8), DEC (decimal, or base 10), HEX (hexadecimal, or base 16). For floating point numbers, this parameter specifies the number of decimal places to use. For example-

Which is the correct parameter for pulsein and pulseinlong?

The following examples show correct use for pulseIn and pulseInLong (requires interrupts on). Note: The HIGH/LOW parameter lets you to measure the high or low period of the signal. You can only perform a HIGH or LOW measurement not both at the same time.