Light Sensor Sets LED Color

Code

The code in the editor below is ready to run! Plug Code Lab Mini in to your computer's USB port, make sure that your Code Lab Mini Sensor Trio Add-On (sold separately) is attached, and hit 'Upload Your Code!' to see what it does. Change something in the code, like a delay or pin number. Try to add something new to the program - it's yours to tinker with! You can always press the 'Restore' button to return the code to the working example.

If you haven't set up your Code Lab Mini Sensor Trio Add-On yet, visit Chapter 0 to watch a video showing you how to do that.

/* Use the light sensor to control which LED light is lit */ void setup() { pinMode(A2,INPUT); //light sensor pinMode(8,OUTPUT); //LED pinMode(10,OUTPUT); //LED pinMode(12,OUTPUT); //LED } void loop() { int light = analogRead(A2); //create integer variable called light with a starting value equal to the reading from port A2 if(light < 300){ //if the light sensor reading is below 300 digitalWrite(8,HIGH); //turn on LED 8 digitalWrite(10,LOW); //turn off LEDs 10 and 12 digitalWrite(12,LOW); } else if(light < 600){ //Otherwise, if the light sensor is below 600 digitalWrite(10,HIGH); //turn on LED 10 digitalWrite(8,LOW); //turn off LEDs 8 and 12 digitalWrite(12,LOW); } else{ //Otherwise (if the light sensor reading is above 600) digitalWrite(12,HIGH); //turn on LED 12 digitalWrite(10,LOW); //turn off LEDs 8 and 10 digitalWrite(8,LOW); } //Depending on the brightness of your room, you may have to use a flashlight to get all of the LED colors to show } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

Walkthrough Video

Watch the video for a line-by-line explanation of how the example program works. Then you'll be ready to make some changes of your own!

Challenges

Coming Soon!

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