Week 3

Arduino:

• mid-level microcontroller
• easily programmed to do many things
• based around the Atmega 8 and Atmega 168 microcontrollers

Micro-controller:

• I/O - Input/Output

Inputs - digital inputs, serial inputs...
- analogue inputs

Outputs - digital outputs, serial output...
- analogue outputs

IDE - Integrated Development Environment
Firmware - Software embedded in a hardware device

Traditionally, programming involved learning assembly language
Atmal developed libraries for programming in C++
Arduino wrote functions for easier programming

Steps for programming:

1. Write our firmware
2. Compile it
3. Fix errors
4. Compile it
5. Fix errors
6. Compile it
7. Upload it to Arduino

Once uploaded, the program is kept in the Arduino's memory until it is over-written...

Example: Washing machine -
Inputs

• water temp
• start/stop
• program select
• door state

.....to Microcontroller

Outputs

• motor rotation
• solonoid for water
• drain solonoid
• heater

Coding Arduino:

• HIGH = 5
• LOW = 0

Compiling:

• select type of Arduino in tools - board
• select serial port in tools - serial port

Some common terms:

• pinMode
• digitalWrite
• delay

N.B. Pins, when not connected, are in an indetermined state ie can be both HIGH or LOW

Performance - aesthetic
Electronics - technical

Critique a peformance:

• understandable/non-understandable
• opaque/transparent
• noise/melodic