LDR sensor tutorial with Arduino – Light Dependent Resistor
Learn how to use an LDR (Light Dependent Resistor) with an Arduino. In this video we’ll go over the basics of the Light Dependent Resistor and an example on how to use an LDR to turn on a light when it’s dark.
*Note that the LED flash used in this example is a ready-to-use component with a built-in resistor, which is why a separate resistor is not needed.
Related Blog Post:
www.diyengineers.com/2021/02/25/ldr-sensor-tutorial-with-arduino-light-dependent-resistor
Items used in this video (affiliate links):
*As an Amazon Associate I earn from qualifying purchases.
Light Dependent Resistor (Module: KY-018):
https://amzn.to/3UWGNRs
Light Dependent Resistor (stand-alone):
https://amzn.to/3yByLpA
Hilitchi Transistors Assortment Kit:
https://amzn.to/4aI8Mux
Breadboard (Elenco 9440):
hhttps://amzn.to/4b5Onzq
Amprobe AM-510 Multimeter:
https://amzn.to/44gy2WE
Amprobe TL35B Test Leads with Alligator Clips:
https://amzn.to/3Utf8s0
Super bright LED Flash:
www.superbrightleds.com/moreinfo/led-wired-bolts/little-dot-smd-led-accent-light/639/
Chapters:
0:00 Intro
1:36 LDR Module Circuit
2:14 LDR Basic Circuit Equations
4:54 LDR Darkness Sensor - How it works
8:31 LDR Darkness Sensor - Breadboard Diagram
9:18 Arduino Programming
11:45 LDR Darkness Sensor with Arduino - Test