Tello Drone Python Programming, Control Drone With Keyboard and Capture Video From Drone Camera! Using Python Module OpenCV and PyGame!

This Tutorial Will Cover On How You Can Control Drone From Keyboard And How To Initiate Drone Camera Displayed On The Computer!

Required Python Version:

• <3.10 And >3.7
• Flexible Python IDE

Required Python Library:

• djitellopy module
• pygame module
• opencv-python module

Required Material:

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• Tello Drone Boost Combo or Tello Drone Basic

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• Tello Drone Boost Combo or Tello Drone Basic

Import The Required Module:

Enter This Command In The Shell IDE

• Install opencv-python module

pip install pip install opencv-python

• Install pygame module

pip install pygame

• Install djitellopy module

pip install djitellopy

Create The First File For Keyboard Initialization Module In Python:

• Named The File as "KeyboardTelloModule.py"
• Write The Lines Of Code (With Explanation):

Import PyGame Python Module:

import pygame

Create Initialization Function:

def init():
#initialize pygame library
    pygame.init()
#Set Control Display as 400x400 pixel
    windows = pygame.display.set_mode((400,400))

Create Main If Statement:

if __name__ == '__main__':
    init()
    while True:
        main()  

• Final Program:

import pygame
def init():
#initialize pygame library
    pygame.init()
#Set Control Display as 400x400 pixel
    windows = pygame.display.set_mode((400,400))
if __name__ == '__main__':
    init()
    while True:
        main()  

After It's Done, Move To The Next Step To Create The Main Python File That Will Be Executed To The Tello Drone.

Create The Second File That Would Be The Main Python File:

• Named The File "MainTello.py"
• Write The Lines Of Code (With Explanation):

Import All Python Module Required:

#import module for tello:
from djitellopy import tello

#import module for time:
import time

#import the previous keyboard input module file from the first step:
import KeyboardTelloModule as kp

#import opencv python module:
import cv2

Global Some Important Variable:

#Global Variable
global img

Create a Returning Function For Controlling Drone Based On Keyboard Input:

def getKeyboardInput():
    #LEFT RIGHT, FRONT BACK, UP DOWN, YAW VELOCITY
    lr, fb, ud, yv = 0,0,0,0
    speed = 80 
    liftSpeed = 80
    moveSpeed = 85
    rotationSpeed = 100
    
    if kp.getKey("LEFT"): lr = -speed #Controlling The Left And Right Movement
    elif kp.getKey("RIGHT"): lr = speed
    
    if kp.getKey("UP"): fb = moveSpeed #Controlling The Front And Back Movement
    elif kp.getKey("DOWN"): fb = -moveSpeed
    
    if kp.getKey("w"): ud = liftSpeed #Controlling The Up And Down Movemnt:
    elif kp.getKey("s"): ud = -liftSpeed 
    
    if kp.getKey("d"): yv = rotationSpeed #Controlling the Rotation:
    elif kp.getKey("a"): yv = -rotationSpeed 
    
    if kp.getKey("q"): Drone.land(); time.sleep(3) #Landing The Drone
    elif kp.getKey("e"): Drone.takeoff() #Take Off The Drone
    
    if kp.getKey("z"): #Screen Shot Image From The Camera Display
        cv2.imwrite(f"tellopy/Resources/Images/{time.time()}.jpg", img)
        time.sleep(0.3)
        
    return [lr, fb, ud, yv] #Return The Given Value

Initialize a Connection With Drone And Keyboard Input:

#Initialize Keyboard Input
kp.init()

#Start Connection With Drone
Drone = tello.Tello()
Drone.connect()

#Get Battery Info
print(Drone.get_battery())

#Start Camera Display Stream
Drone.streamon()

Main Loop Function:

while True:
#Get The Return Value And Stored It On Variable:
    keyValues = getKeyboardInput() #Get The Return Value And Stored It On Variable
#Control The Drone:
    Drone.send_rc_control(keyValues[0],keyValues[1],keyValues[2],keyValues[3]) 
#Get Frame From Drone Camera Camera 
    img = Drone.get_frame_read().frame
    img = cv2.resize(img, (1080,720))
#Show The Frame
    cv2.imshow("DroneCapture", img)
    cv2.waitKey(1)

Final Program:

#import module for tello:
from djitellopy import tello

#import module for time:
import time

#import the previous keyboard input module file from the first step:
import KeyboardTelloModule as kp

#import opencv python module:
import cv2
#Global Variable
global img
def getKeyboardInput():
    #LEFT RIGHT, FRONT BACK, UP DOWN, YAW VELOCITY
    lr, fb, ud, yv = 0,0,0,0
    speed = 80 
    liftSpeed = 80
    moveSpeed = 85
    rotationSpeed = 100
    
    if kp.getKey("LEFT"): lr = -speed #Controlling The Left And Right Movement
    elif kp.getKey("RIGHT"): lr = speed
    
    if kp.getKey("UP"): fb = moveSpeed #Controlling The Front And Back Movement
    elif kp.getKey("DOWN"): fb = -moveSpeed
    
    if kp.getKey("w"): ud = liftSpeed #Controlling The Up And Down Movemnt:
    elif kp.getKey("s"): ud = -liftSpeed 
    
    if kp.getKey("d"): yv = rotationSpeed #Controlling the Rotation:
    elif kp.getKey("a"): yv = -rotationSpeed 
    
    if kp.getKey("q"): Drone.land(); time.sleep(3) #Landing The Drone
    elif kp.getKey("e"): Drone.takeoff() #Take Off The Drone
    
    if kp.getKey("z"): #Screen Shot Image From The Camera Display
        cv2.imwrite(f"tellopy/Resources/Images/{time.time()}.jpg", img)
        time.sleep(0.3)
        
    return [lr, fb, ud, yv] #Return The Given Value
#Initialize Keyboard Input
kp.init()

#Start Connection With Drone
Drone = tello.Tello()
Drone.connect()

#Get Battery Info
print(Drone.get_battery())

#Start Camera Display Stream
Drone.streamon()
while True:
#Get The Return Value And Stored It On Variable:
    keyValues = getKeyboardInput() #Get The Return Value And Stored It On Variable
#Control The Drone:
    Drone.send_rc_control(keyValues[0],keyValues[1],keyValues[2],keyValues[3]) 
#Get Frame From Drone Camera Camera 
    img = Drone.get_frame_read().frame
    img = cv2.resize(img, (1080,720))
#Show The Frame
    cv2.imshow("DroneCapture", img)
    cv2.waitKey(1)

1. Turn On The Tello Drone From The Left Side
2. Wait Until it Blink Yellow
3. Find The Tello Wifi Connection
4. Connect Your Device To Tello Wifi Connection

After The Tello Wifi Connection Connected, Click Run Program If You Are On VSCode Or Execute The Program

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