CSCI 235 — Arduino starting with Tinkercad Circuits

What you do with an Arudino (and a computer)

• Victoria Bradbury projects

Arduino

• Software
  • Arduino web page
  • Language reference
  • Libraries
• Hardware
  • Arduino store
    • Arduino Uno
    • Arduino Mega
    • Arduino Nano
  • Adafruit
    • Adafruit FLORA
    • Adafruit Feather
    • Adafruit Trinket M0
    • Adafruit METRO 328
    • Circuit Playground Express
    • Limor Fried — Ladyada
  • Build your own
    • Arduino on a breadboard
    • ATtiny85 programming with Arduino
    • ATtiny datasheet

External connections

• Button – but use the internal pull-up
• Potentiometer
• Breadboard
• Light-Emitting Diodes (LEDs) — never use without a resistor
• Processing tutorial on electronics

Getting started with Tinkercad Circuits

• Tinkercad Circuits — JOIN IN and sign in
• Tinkercad Learn — 3D → Circuits
• Circuits lessons
• Start all over: Tinkercad → Lessons
• Start all over: Tinkercad → Circuits

Things to do

• Turn on LED with switch
  • 3.0V coin battery
  • pushbutton switch
  • 330 Ω resistor
  • LED
• Using a simulated Arduino
  • Add Arduino Uno R3
  • Bring up code editor
  • Start similation
  • Stop similation
  • Change time LED is high to 0.2 secs
  • Got to Text mode
    • It may look like Processing
    • But it is C++
  • Get out of block programming mode
  • Do real C — Add definition for ledPin (as const int) and modify loop
• Adding an LED without breadboard
  • Leave Code mode
  • Add an LED connected to pin 7
  • Have pin 7 LED and the internal LED to alternate on and off
• Adding a breadboard
  • In + components add a small breadkboard
  • 
  • Wire exactly as shown above. Use the same colors for wire.
  • Make sure you have no short circuits!
• Adding an LED
  • In + components add a 330 Ω resistor and an LED.
  • Wire them into Pin 4. Be sure the cathode of the LED is connected to ground.
  • 
  • Simulate
• Adding a switch
  • Use pin 2.
  • Pushbutton switches (aka tactile button switches) are tricky. Be sure you have them oriented corrected. Also, if you step on them, throw them away.
  • 
  • Modify Arduino program to use Pin 2. Use pinMode() to enable the internal pullup.
  • Using digitalRead() to read Pin 2.
  • When the button is switched, light up the LED.
• Adding a speaker
  • Replace the LED with a Piezoelectric buzzer.
  • 
  • If you turn the Piezo off and on quickly, it will make a tone. Unfortunately, sound is not enabled on the computers in the lab.
• Three projects if time permits
  • Make a stop light
  • Make a button that flashes a LED
  • Make a button that flashes a LED for 60 seconds after a button is pressed