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arduinoSimon.ppt
- 1. Re-programming the Simon Says with Arduino Linz Craig, Brian Huang
- 3. Agenda • About us / Introductions • Software Installation • What can it do? Who cares? • Blink Sketch Disco Lights • Using Variables • If() statement reading buttonPress • Analog Sensors Fading • Making Sound
- 4. About Us SparkFun Electronics is all about creation, innovation and sharing information. We want to get you excited about cutting edge electronics technology with our hands on educational kits.
- 5. Arduino Board “Strong Friend” Created in Ivrea, Italy in 2005 by Massimo Banzi & David Cuartielles Open Source Hardware Atmel Processor Coding is accessible (C++, Processing, ModKit and MiniBloq)
- 6. Arduino Software Installation Open Source Free Available on-line with resources at: www.arduino.cc
- 7. What can it do? •Great for prototyping ideas •Access to multiple I/O •Drive motors, turn on lights, trigger controls. •Low Power requirements •Flexible / Open-source
- 8. Who cares? Hackers / Makers Engineers Artists Musicians Kids! Teachers!! You!!!
- 9. Setup Board Type Tools → Board → Arduino Uno
- 10. Setup Serial COM Port Tools → Serial Port → Notes: PC – Highest COM # Mac – /dev/tty.usbserial-A####xxx
- 11. Analog and Digital • All Arduino signals are either Analog or Digital • All computers including Arduino, only understand Digital • It is important to understand the difference between Analog and Digital signals since Analog signals require an Analog to Digital conversion
- 12. Input vs. Output Everything is referenced from the perspective of the microcontroller. Inputs is a signal going into the board. Output is any signal exiting an electrical system • Almost all systems that use physical computing will have some form of output • Often – Outputs include LEDs, a motor, a servo, a piezo element, a relay and an RGB LED
- 13. Basic Program Two required routines / methods / functions: void setup() { // runs once } void loop() { // repeats forever!!! } upload
- 14. Let’s get to hacking… Project #1 – Blink “Hello World” of Physical Computing Psuedo-code – how should this work? Turn LED ON Wait Turn LED OFF Wait Rinse & Repeat
- 15. Three commands to know… pinMode(pin, INPUT/OUTPUT); ex: pinMode(13, OUTPUT); digitalWrite(pin, HIGH/LOW); ex: digitalWrite(13, HIGH); delay(time_ms); ex: delay(2500);
- 16. LED1 = ~3; LED2 = ~5; LED3 = ~10; LED4 = 13; Can you figure out which LED is tied to which pin? Write down a few notes in your notebook! 3 5 13 LED Pin Configurations 10
- 17. Output is always Digital To output a signal that pretends to be Analog use this code: analogWrite (pinNumber, value ); Where pin is one of the analog output pins: 3, 5, 6, 9, 10, 11 Where value is a number ranging from: 0 – 255.
- 18. Output is always Digital (ON or OFF) Using a Digital signal that pretends to be an Analog signal is called Pulse Width Modulation (PWM) By varying the duty cycle, we can “fake” an analog signal output. PWM is available on Arduino pins # 3, 5, 6, 9, 10, and 11 P.W.M. Signal @ 25% P.W.M. Signal @ 75% P.W.M. Signal rising SIMON_2b_BLINK
- 19. Using Variables To clean-up code, for read-ability, and flexibility – we can create placeholders in code. Example: int ledPin = 3; void setup(){ pinMode(ledPin, OUTPUT); } void loop(){ digitalWrite(ledPin, HIGH); }
- 20. Digital Input int button_state = digitalRead(ButtonPin); Value will be either: HIGH or LOW
- 21. Reading a button press Button Input is normally HIGH – when you press it, you pull it LOW. The Code: int buttonPress = digitalRead(2);
- 22. Activating the Internal Pull-up Resistor pinMode(pin, INPUT_PULLUP); ex: pinMode(2, INPUT_PULLUP); Notes: BUTTON1 = 2; BUTTON2 = 6; BUTTON3 = 9; BUTTON4 = 12;
- 23. BUTTON1 = 2; BUTTON2 = 6; BUTTON3 = 9; BUTTON4 = 12; Can you figure out which Button is tied to which pin? Write down a few notes in your notebook! 2 6 12 Button Pin Configurations 9
- 24. Conditional Statements If… General Use if(condition) { // do this } Example if(button_State==HIGH) { digitalWrite(ledPin, HIGH); delay(300); digitalWrite(ledPin, LOW); delay(300); }
- 25. Digital Input • To connect digital input to your Arduino use Digital Pins # 0 – 13 (Although pins # 0 & 1 are also used for serial) • Digital Input needs a pinMode command: pinMode ( pinNumber, INPUT ); Make sure to use caps for INPUT • To get a digital reading: digitalRead ( pinNumber ); • Digital Input values are only HIGH (On) or LOW (Off)
- 26. Last bit… the buzzer SIMON_3_BUZZER Final command to know: tone(pin, freq, duration); pin – the OUTPUT pin the buzzer is connected to. freq – unsigned int (0 … 65,535) duration – unsigned long (0 … 2^32 - 1)
- 27. Buzzer Pins The Buzzer is connected between pins D4 and D7. You must set both pins as OUTPUTs – pinMode(4, OUTPUT); pinMode(7, OUTPUT); Use tone(4, 440); to generate a 440 Hz sound.
- 28. Musical Notes / Frequencies Note Frequency (Hz) C4 261 C# 4/Db 4 277 D4 293 D# 4/Eb 4 311 E4 329 F4 349 F# 4/Gb 4 369 G4 392 G# 4/Ab 4 415 A4 440 A# 4/Bb 4 466 B4 493 Note Frequency (Hz) C5 523 C# 5/Db 5 554 D5 587 D# 5/Eb 5 622 E5 659 F5 698 F# 5/Gb 5 739 G5 783 G# 5/Ab 5 830 A5 880 A# 5/Bb 5 932 B5 987
- 29. Simon DiscoMode • Array variables • custom functions • buzz(tone_id); • change_led();
- 30. Questions?
- 31. www.sparkfun.com 6175 Longbow Drive, Suite 200 Boulder, Colorado 80301