session 2

• Microcontroller or MCU short for microcontroller unit is a small computer (SoC) on a single integrated circuit containing; (brain of our robot)

  • processor core
  • memory
  • programmable input/output peripherals
• power in ( barrel jack) - 9V (minimum) or 12V supply connection for power (battery)
• power in (USB port) - provides power and communicates with the board when plugged into a computer via USB
• LED (RX: recieving) - blinks when recieving data
• LED (RX: transmitting) - blinks when transmitting data
• pins (digital, analog, ground) - used for input, output, power and ground
• digital pins- 0-13 (blink)
• analog output pins/ PWM (pulse width modulation) pins/ tilde - ~3, ~5, ~6, ~9, ~10 and ~11

  • 0V to 5V (led: dim, blink)
  • similar to normal pins
• normal digital pins - 0, 1, 2, 4, 7, 8, 12, 13

  normal DP - 0V or 5V (led: blinking)
• ground - negative charge
• REASONS WHY LED WONT LIGHT UP

  • insufficient voltage
  • loose connection
  • dead battery
  • faulty led, malfuction
• DP - unsure voltage except during programming

  5V - always
• analog in

  • A0 - A5
• power in - 3.3V, 5V
• power out - ground
• reset - only resets a certain component
• reset button - resets/restarts the whole code, not delete
• led (on/off) - indicates if there is power