Hi All,
When thinking about this project, I was immediately brought back to work and my students. Teachers in my building are constantly playing jeopardy as a review and the kids always argue about who buzzed in first. I wanted to try and solve that issue, so I created a simple buzzer. It could be built out with more switches and LEDs, but I went with two for now. Anything to reduce the bickering and increase the learning is great for students and teachers. 🙂
Here’s a video:
Here’s the code:
It’s super simple, but it gets the job done.
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void setup() { // put your setup code here, to run once: pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, INPUT); pinMode(10, INPUT); } void loop() { // put your main code here, to run repeatedly: //if switch on pin 9 is pressed first the attached LED lights up. if (digitalRead(9) == HIGH && digitalRead(10) == LOW) { digitalWrite(7, HIGH); delay(5000); } //if switch on pin 10 is pressed first the attached LED lights up. else if (digitalRead(10) == HIGH &&digitalRead(9) == LOW) { digitalWrite(8, HIGH); delay(5000); } //if neither switch is pressed, neither light up. else { digitalWrite(7, LOW); digitalWrite(8, LOW); } } |