3_6 Two Threshold Nightlight

Two Threshold Nightlight

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.

Restore 12 14 18 24 30

Monitor Upload Your Code!

/* Create an automatic nightlight that won't flicker when the light is near the threshold value */ void setup(){ pinMode(A2,INPUT);//Light sensor pinMode(8,OUTPUT); //LED light } void loop(){ if(analogRead(A2)<300){ //If the light level drops below 300 digitalWrite(8,HIGH); //Turn on the LED } else if(analogRead(A2)>400){ //otherwise if the light level rises above 400 digitalWrite(8,LOW); //Turn off the LED } } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

 

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Success!

Compile errors:

Serial port monitor: Input: Send Close

 

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!