Display Light Sensor Readings on the Serial Monitor

Code

The code in the editor below is ready to run! Plug your Code Lab in to your computer's USB port with the cable 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.

/* Use the serial monitor to 'print' the values that the light sensor reports to your Code Lab */ void setup() { pinMode(A2,INPUT); //light sensor Serial.begin(9600); //set up the serial monitor to communicate with Maker Board } void loop() { Serial.println(analogRead(A2)); //show the value of the analogRead of port A2 (the light sensor) on the serial monitor } // (c) 2021 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

Can you complete the challenge? Change the code in your code editor above. Upload your code to see the effect when you're finished. Complete a challenge? Check it off the list!

Add serial.print(“ “); function in the void loop above the serial.println(); function and create a text label for your light reading. Remember the serial.print(); function must be after the opening curly brace of void loop.

Add a delay inside the void loop to slow down the speed at which the light readings are taken.

Concepts

These are the new code concepts covered in this example program. To become a great coder, read through these concepts to learn new vocabulary.

Quiz

If you're having trouble, try to run an experimental program or look at the example code to help you find the answer.

1. Which syntax ends the entire 'void loop' function?

semicolon ;
parentheses )
closing curly brace }

2. Which syntax ends a single code command?

semicolon ;
closing curly brace }
period .

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