May 10, 2019 · I built a working sensor using the arduino starter kit photoresistor (datasheet) using a 10kOhm resistor and a 5V source but want to understand it better. Edit: afer helpful comments, this …

I mean, photoresistor is already a resistor, why do we have to decrease the voltage in the circuit with an additional resistor? Thanks in advance for your answers.

Sep 30, 2017 · Light dependent resistors (LDRs) today are not that complicated. Designed originally to help count "bottles and/or cans" passing by a moving flow at production factories, they soon lost …

Nov 8, 2020 · 5 As an addition to the other answers, typical CdS photoresistors have their maximum sensitivy at green light and nearly none for red and infrared. Also, their sensitive area is very uneven …

Oct 15, 2020 · A photoresistor's sensitivity is a byproduct of the chemical used to create it. This one, a CdS cell, peaks around 545 nm wavelength, which means it is much more sensitive with Green, …

Oct 1, 2015 · How accurate is a photoresistor? Ask Question Asked 10 years, 2 months ago Modified 10 years, 2 months ago

Apr 1, 2018 · Without the fixed resistor, the 5V going into the photoresistor has nowhere to go other than the analog input pin, so you'd read 5V regardless of the light level. The variable resistance of the PR …

Sep 11, 2023 · Tuning photoresistor circuit with resistors Ask Question Asked 2 years, 2 months ago Modified 2 years, 2 months ago

Aug 5, 2025 · Can you take a picture of the circuit of the light meter to which the the photoresistor was connected? The surrounding components may give an idea of the characteristics of the photoresistor.

Mar 31, 2016 · simulate this circuit – Schematic created using CircuitLab I have a photoresistor, R1, and as a voltage divider a fixed resistance, R2. There is a voltage of 5V over these two, and the …