# Measuring Frequency of stroboscope/strobe light

## Homework Statement

I want to know how to measure the frequency of a stroboscope by using an LDR and picoscope, but i'm not sure what circuit I should make up with the LDR in order for picoscope to show the frequency.

## The Attempt at a Solution

I thought connecting the LDR straight to the picoscope would do, but my teacher said it wouldn't work.

Connect the LDR in series with a resistor, across the supply. As the resistance of the LDR changes, the voltage at the junction of the LDR and the resistor will vary. This signal you can put into another instrument.

Code:
---------------------------- + 5V
|
x
x  <- LDR
x
|
o-------------- > signal
|
x
x  <- resistor
x
|
--------------------------------- GND

AlephZero