Aquaponics Workshop

31 Pages·2013·3.15 MB·English

Aquaponics Workshop
#1
Key Points of the Workshop
1. Raspberry Pi
a. Basics of Linux and remote connections
2. Programming
a. Basics of Python and integration with Circuitry
3. Circuitry
a. Basics of circuitry and electronics
4. Integration
a. Programming + Circuitry
Raspberry Pi
● What is it?
○ Microcomputer
● What does it run?
○ Linux
● How do we communicate with it?
○ Python
● What far can it go?
○ To Infinity and Beyond!
Connecting to the Pi
● SSH/SFTP (via Putty)
Interactive version of Python
Connecting to the Pi
● VNC
Terminal
“Start Menu”
VNC
Connecting to the Pi...
1. Open the VNC Viewer
2. Enter the IP::Port (I’ll provide each group
with one)
3. Enter password (It’s just “raspberry” for
now)
4. Poke around
Python
● Basics of Python:
File containing:
print(‘Hello, World!’)
Run this in terminal:
python “Hello World.py”
Programming Basics
Python - A language
Logic + Syntax
x = ‘morning’
y = ‘evening’
n = x
if n == x
print(‘Hello, World!’) # Print the morning greeting
else
print(‘Goodbye, World!’) # Print the evening greeting
Variables
Variables
# We could use 1 instead of true;
● Strings: variable = ‘Hello, World’
# both mean “On”
● Numbers: variable = 1
# (0 and False both mean “Off”)
● Booleans: variable = true
# These are examples of boolean
# variables
$1 v. “one” v. 1
Comments
# This is a comment, not a hashtag
Conditionals
Conditionals
● if condition 1 # boolean 1
statement 1
● elif condition 2 # boolean 2
statement 2
● else
statement 3