July 15th-Day 7- Project Work Continues

 

Working on Pico blimp:

Experimented with carrying small loads; will bring in new RC transmitter; can power with two lipo batteries.

Supplied LM386 Audio amplifier and small speaker:

Working on display table:

HP touch screen display arrived, missing a power supply. A 19.5V supply was found, but display did not light up.

Planning levitating solar system model:

How to get the two Uno R4's to communicate?

Planning POV display:

 

Showed how Arduino AI assistant  at (https://create.arduino.cc/ )can be used to generate POV code:

#define HALL_SENSOR 2  // Hall effect sensor on pin 2

#define NUM_LEDS 8     // Number of LEDs in row

const int ledPins[] = {3, 4, 5, 6, 7, 8, 9, 10}; // LED pins

// Letter A pattern (columns of the letter)

const byte letterA[] = {

  0b01111100,  // Column 1

  0b10010010,  // Column 2  

  0b10010010,  // Column 3

  0b01111100   // Column 4

};

volatile unsigned long lastTrigger = 0;

volatile boolean triggered = false;

void setup() {

  // Configure LED pins as outputs

  for (int i = 0; i < NUM_LEDS; i++) {

    pinMode(ledPins[i], OUTPUT);

  }

  

  // Setup hall sensor interrupt

  pinMode(HALL_SENSOR, INPUT_PULLUP);

  attachInterrupt(digitalPinToInterrupt(HALL_SENSOR), hallTriggered, FALLING);

}

void loop() {

  if (triggered) {

    displayLetter();

    triggered = false;

  }

}

void hallTriggered() {

  // Debounce

  if (millis() - lastTrigger > 100) {

    triggered = true;

    lastTrigger = millis();

  }

}

void displayLetter() {

  const int columnDelay = 3; // Adjust for rotation speed

  

  // Display each column of the letter

  for (int col = 0; col < sizeof(letterA); col++) {

    // Set LEDs according to column pattern

    for (int row = 0; row < NUM_LEDS; row++) {

      digitalWrite(ledPins[row], bitRead(letterA[col], row));

    }

    delay(columnDelay);

  }

  

  // Turn off all LEDs

  for (int i = 0; i < NUM_LEDS; i++) {

    digitalWrite(ledPins[i], LOW);

  }

}

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Shirt-folding team experimented with controlling the servos using

 the Kitronik robotics board

Discussion about pullup resistors and push buttons:

The team discussed the progress and challenges of various projects. They highlighted the upcoming prototype display and the need to address a non-compatible charger issue.

 Lucas showed interest in woodworking, while Francesca focused on product design. The team debated using a universal connector and discussed the importance of individual accountability. 

They also emphasized the need for sketches and prototypes to visualize project outcomes. Additionally, they addressed the use of micro:bit for coding simplicity and the potential use of stepper motors. The meeting concluded with reminders to ensure team members are well-rested and to follow up on specific tasks and deliveries.

Action Items

• Drop the Best Buy universal charging link into the mentors' WhatsApp chat.
• Bring in the boxes with the parts that have arrived.
• Have the team create a sketch of the overall design and how the components will be interconnected.
• Check the delivery date estimate for the levitation kit.
• Provide the team with three stepper motors to start with and have them determine the most important ones.
• Encourage the team to focus on building physical prototypes and testing, rather than spending too much time on computer-based design.