Workshop_3.md

Workshop 3: Go Go Tello!

In this workshop, we will explore user input devices and write a program that interfaces a user input device with drone controls.

We're going to control a drone with a Dance Dance Revolution mat.

Topics

• User input devices

Python Reference Sheet

# Conditionals look like this.
if condition:
	instructions

# Here are a few examples.

if x == "A":
	print("You entered the letter A.")

if x < 5 and x % 2 == 0:
	print("x is less than 5, and x is also an even number.")

# There are 3 kinds of loops:
# 1. while loops do something while a condition is true.
# 2. "for x in y" loops do something for every item x in a collection of items y.
# 3. "for x in range(N)" will do something N many times.

# Here are a few examples.

while True:
	print("This will loop forever!")
	print("Unless I break. Then it'll stop.")
	break

people = ["John", "Jane", "Jack", "Jill"]
for person in people:
	print("Hello", person)

for i in range(10):
	print("Hi!")

# You can get user input using the input() function.
# If you give the function an argument, it'll display
# the argument as a prompt.

# Here are a few examples.

userInput = input()
age = input("What is your age? ")

Tello Reference Sheet

Reminder: we're not using the easyTello library -- we are using Shawn's easyTello fork which contains some important bug fixes. This is already in the repository in tello.py.

Remember to install OpenCV if you want to be able to use the drone's camera!

At some point, every programmer learns that reading code can be a valuable way to learn how to use something. In this case, try reading the tello.py code and seeing if you can use it to make your drone move the way you want it to: tello.py