Introduction: Arduino Light Intensity Lamp; QUICK AND EASY

In this instructable, you will learn how to make an Ardunio light intensity lamp. For this, I will be using the app tinkercad, which is an amazing website if you don't have physical components with you. However, if you do have the physical components then use those! You can use this circuit at night, or in a room to add more brightness. Let's start off with supplies!


  • Ardunio
  • LDR
  • Lightbulb
  • Power source
  • Breadbpard
  • Resistor
  • Relay

Step 1: Step 1: Gather All the Supplies!

  • Make sure you have everything with you, so you can build the circuit with ease.

Step 2: Step 2: CONNECT! Add Wires Into Your Circut

Adding wires will connect everything together, making sure the current is flowing through the whole circuit. Without wires, there will be no current, and the light bulb won't light up. When connecting the wires onto the breadboard, you want to have the wires in the right port. These are some key things:

  • Pin 4 has to be connected to terminal 5 in the relay
  • The light bulb wire has to be connected to terminal 7
  • The wire that is connected the relay and ground, should be in terminal 8
  • The power source wire to terminal 1

Step 3: CODE!

Now you want to code in order to make sure your light bulb lights up. The code given above tells us that if we give the LDR a value less than 500, the light bulb won't light up. Use the serial monitor to check whether the value given is greater or less than 500, and adjust the LDR to what you want.

Step 4: Show It Off!!

You've done your Arduino light bulb!! This is a quick and easy thing to make, and hopefully, you had fun. Thanks!!

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Step 5: Video