SERVO MOTOR

Published October 12, 2021 © GPL3+

Servo motor Control using Hand Gesture with Computer Vision

Rotate the servo by an angle when a hand gesture is made

IntermediateFull instructions provided4,102

Servo motor Control using Hand Gesture with Computer Vision

Things used in this project

Hardware components

Arduino UNO

SG90 Micro-servo motor

Jumper wires (generic)

USB-A to Mini-USB Cable

Software apps and online services

Arduino IDE

Pycharm IDE

Story

INTRO

Hello guys. Welcome to my channel in this video we are going to rotate a servo motor using hand gestures with the help of Python and of course Arduino. Using computer vision to track our finger movement, we send data to our Arduino to cause the motor to turn at an angle of 180 degrees. By tracking, the servo will only turn if the index finger is raised and the others are kept closed. This can be implemented in many projects with multiple servos but in this case, we stick to one servo.

SERVO MOTOR

Servo is a type of geared motor that can only rotate 180 degrees. It is controlled by sending electrical pulses from your Arduino board. These pulses tell the servo what position it should move to. The Servo has three wires, of which the brown one is the ground wire and should be connected to the GND port of Arduino, the red one is the power wire and should be connected to the 5v port, and the orange one is the signal wire and should be connected to the Dig #9 port

So basically after python tracks the hand/ finger gestures using computer vision, and if our desired hand gestured in made, the servo receives 180 as an input from python and placed in the "servo.write" expression to turn it.

Code

// we first import our libraries

#include "cvzone.h"    // this help us to communicate with python over the serial com port

#include "Servo.h"
Servo servo;                         // create our servo object
SerialData data(1,3);                // create our serial object
int value[2];                   //create an array to store our received values

void setup () {
  
  data.begin(9600);   // begin our serial communication
  servo.attach(9);*      // connect our servo pin
}

void loop () {
  data.Get(value);         // read the value from python and store it in value
  servo.write(value[0]);      // since our received value is an array, we only accept the first value since only one servo is attached
  
  delay(30);   // delay for 30 milli seconds

  // All done 
  // lets move to python 
}

# for recording or capturing feed from web cam
import cv2  

#need for our hand detection
from cvzone.HandTrackingModule import HandDetector

from cvzone.SerialModule import SerialObject

# initialize our camera
cap = cv2.VideoCapture(0)

# set our hand tracking object
detector = HandDetector(detectionCon=0.8)
arduino = SerialObject("COM3")    # Select your own com port here


# start our while loop
while True:
    success, image = cap.read()
    hands, bboxInfo = detector.findHands(image)
    if len(hands)==1:
        print(detector.fingersUp(hands[0]))       
        if detector.fingersUp(hands[0]) == [0,1,0,0,0]:    
            arduino.sendData([180])               
        else:
            arduino.sendData([0])                        
    cv2.imshow('image',image)      
    cv2.waitKey(1)

Credits

muftawu

6 projects • 6 followers

Servo motor Control using Hand Gesture with Computer Vision

Things used in this project

Hardware components

Software apps and online services

Story

SERVO MOTOR

Schematics

Servo motor circuit connection

Code

Arduino Code

Python code

Credits

muftawu

Comments

Embed the widget on your own site

Servo motor Control using Hand Gesture with Computer Vision

Servo motor Control using Hand Gesture with Computer Vision

Things used in this project

Hardware components

Software apps and online services

Story

SERVO MOTOR

Schematics

Servo motor circuit connection

Code

Arduino Code

Python code

Credits

muftawu

Comments

Related channels and tags