week 9:output devices

Gert's training

During this week’s training, Gert showed us how to use the oscilloscope to check if the power voltage influences the performance of an output

9.1 — Gert introduced us to the objective of the exercise

9.2 — Gert demonstrated in detail the proper way to connect the oscilloscope to the motor, explaining the role of each connection

Gert was showing us how changing the speed could affect the motor's performance

new iteration

Building on the board I designed during weeks five and six, this week’s assignment focused on extending its functionality rather than creating a completely new design. To fulfill the requirements of the assignment, I decided to work with the same board and explore its limits by adding support for additional servo motors. The intention was to test how the existing design would perform under increased load and more complex control demands.

By using the same board as a base, I was able to evaluate whether the original layout and connections were flexible enough to accommodate extra components without major changes. This process highlighted important considerations such as power distribution, signal routing, and overall stability when multiple servos are connected and operating simultaneously. Testing the performance of the servos also made it possible to observe how reliably the board handles multiple outputs and whether any limitations become apparent.

the code doesn't actually work by giving specific instructions to the motor but just moves it

I managed to write a code that after pressing the button the servo will rotate continuously

more attempts with the code

9.8 — at this point I added a second one to see if both will react the same way

9.8 — the connection of the multiple servos was very innovative

9.8 — and the cable management was not at all present this week

I was so happy that the servos were operating similarly

Arduino Servo motors x2 + Button




#include 

Servo myservo;

const int buttonPin = 1;  
const int servoPin = 26;  
const int ledPin = 0;     

int buttonState = 0;
int lastButtonState = LOW;
int servoAngle = 0;

void setup() {
  myservo.attach(servoPin);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, HIGH); // LED on initially

  servoAngle = 0;
  myservo.write(servoAngle);
}

void loop() {
  buttonState = digitalRead(buttonPin);

  if (lastButtonState == LOW && buttonState == HIGH) {
    digitalWrite(ledPin, LOW);

    // Rotate +90° but wrap back to 0° if beyond 180
    servoAngle += 90;
    if (servoAngle > 180) {
      servoAngle = 0;
    }

    myservo.write(servoAngle);
    delay(400); // debounce delay
    digitalWrite(ledPin, HIGH); // LED back on after move
  }

  lastButtonState = buttonState;
}