4_15 Show Button and LED Status on Serial

Show Button and LED Status on Serial Monitor

Code

The code in the editor below is ready to run! Plug Code Lab Mini 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.

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Monitor Upload Your Code!

/* Serial.print the status of a button and an LED so you can see how the computer 'sees' the component statuses (0 or 1).*/ void setup() { pinMode(8,OUTPUT); //LED light pinMode(4,INPUT_PULLUP); //button will send a LOW (0) signal when pressed Serial.begin(9600); //set the serial port up to receive data } void loop() { digitalWrite(8,digitalRead(4)); //Use the value from the digitalRead of the button as the value for digitalWrite for the LED Serial.print("Button Status: "); //Use serial.print to label the data in the monitor. Serial.println(digitalRead(4)); //Use serial.println to show the data and start a new line in the monitor Serial.print("LED Status: "); //Use serial.print to label the data in the monitor. Serial.println(digitalRead(8)); //Use serial.println to show the data and start a new line in the monitor delay(500); //Delay 500 milliseconds so the data doesn't stream by too fast. //Note that adding a delay will make the button less responsive to your touch. } // (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

Can you complete the challenges? 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!

Change the text that prints on the serial monitor. Can you think of better labels for the data?

Change the delay in the void loop. Try to find a delay that is responsive to your touch, but where you can still read the information on the serial monitor.