Components and supplies
Resistor 100 ohm
Breadboard (generic)
Photo resistor
Jumper wires (generic)
LED (generic)
Resistor 1k ohm
Arduino UNO
Apps and platforms
Arduino Web Editor
Arduino IDE
Project description
Code
LED_PR_Light_Read
arduino
Downloadable files
Component Setup
Component Setup
Component Setup
Component Setup
Comments
Only logged in users can leave comments
Anonymous user
2 years ago
What will be a good use in the real world?
Anonymous user
2 years ago
I'll save it for later.
Anonymous user
2 years ago
Yep, I'm bookmarking this page.
Anonymous user
2 years ago
Hi, I Have done this project with opamp comparator by I would like to report to all what are the disadvantaged of use photo resistor. Photo resistor has a temperature deviation during all seasons. This need a continuos adjust of threshold. Try to add a temperature sensor that compensate the effect of photo resistor temperature drift characteristic.
Anonymous user
2 years ago
Maybe i should try this project...
Anonymous user
2 years ago
Really simple to follow, I was wondering if you have connected an LCD screen into this setup?
DCamino
2 years ago
A lot of people have recommended that and it should work. However, I don't have a compatible LCD screen. You should try hooking one up!
Anonymous user
2 years ago
Short correction of the image, PIN 12 and 13 are connecting to the anodes. https://abload.de/img/lightsensorpusps.jpg
Anonymous user
3 years ago
Hi, I Have done this project with opamp comparator by I would like to report to all what are the disadvantaged of use photo resistor. Photo resistor has a temperature deviation during all seasons. This need a continuos adjust of threshold. Try to add a temperature sensor that compensate the effect of photo resistor temperature drift characteristic.
Anonymous user
5 years ago
What will be a good use in the real world?
Anonymous user
2 years ago
Yep, I'm bookmarking this page.
Anonymous user
2 years ago
I'll save it for later.
Anonymous user
5 years ago
Maybe i should try this project...
Anonymous user
6 years ago
I'm gonna use a similar setup for one of my projects and I wanna ask if the 1k resistor is needed (I know it is) and if can replace it with builtin pull-up resistor in the Arduino. Am I wrong to think that if I use an analog pin with pull-up activated I could connect a photoresistor directly to the Arduino pin?
loplo
7 years ago
Short correction of the image, PIN 12 and 13 are connecting to the anodes. https://abload.de/img/lightsensorpusps.jpg
DCamino
2 years ago
Thanks for this. Looks a lot better than mine!
N_Murphy1
7 years ago
Really simple to follow, I was wondering if you have connected an LCD screen into this setup?
DCamino
2 years ago
A lot of people have recommended that and it should work. However, I don't have a compatible LCD screen. You should try hooking one up!
Ambient Light Sensor Using Photo Resistor and LED Lights! | Arduino Project Hub
Anonymous user
2 years ago
I'm gonna use a similar setup for one of my projects and I wanna ask if the 1k resistor is needed (I know it is) and if can replace it with builtin pull-up resistor in the Arduino. Am I wrong to think that if I use an analog pin with pull-up activated I could connect a photoresistor directly to the Arduino pin?