TECH KEEDA

In this project, we will build an exciting AI Hand Gesture Shooting Game using Python, OpenCV , and MediaPipe . Instead of using a mouse, you will control the crosshair with your finger and shoot using a pinch gesture 🤏. 💰 Pro Tip: If you want to make this project portable and advanced, you can use an ESP32-CAM module instead of a normal camera and stream video to your laptop. 🧰 1. Hardware Required 💻 Laptop / PC (Windows recommended) 📷 ESP32-CAM Module (Recommended for smart AI projects) 🔌 USB to TTL Converter (for programming ESP32-CAM) ⚡ Jumper Wires 📶 WiFi Connection 👉 Recommended Module: ESP32-CAM (OV2640 Camera) 📚 2. Python Libraries Required Open Command Prompt and install the following libraries: 📋 Copy pip install opencv-python mediapipe That’s it! Now you're ready to run the AI game 🚀 🧠 3. Complete Python Code 📋 Copy import cv2 import mediapipe as mp import random import math import time # ...

 Controlling a DC motor with a Raspberry Pi 3 B+ is an essential project for robotics and automation. In this tutorial, we will interface a DC motor with Raspberry Pi 3 B+ using the L298N motor driver . Let’s get started! 🚗⚡ 📝 Components Required Component Quantity Description Raspberry Pi 3 B+ 1 Main Controller L298N Motor Driver 1 To control the DC motor DC Motor 1 The motor to be controlled Power Supply (12V) 1 External power for motor Jumper Wires As needed To connect components Breadboard 1 For connections (optional) 🔌 Circuit Connections L298N Pin Connects To 12V 12V Power Supply GND Raspberry Pi GND & Power Supply GND 5V Not Connected (Raspberry Pi provides 3.3V) IN1 Raspberry Pi GPIO 17 (BCM) IN2 Raspberry Pi GPIO 18 (BCM) ENA Raspberry Pi GPIO 22 (BCM) OUT1 & OUT2 DC Motor Terminals 🔴 Note: The L298N module needs an external power supply (12V) to drive the DC motor efficiently. The Raspberry Pi should not power the motor directly. 📷 Circuit Diagram...

Interfacing Water Flow Sensor with Raspberry Pi 3 🚿 🎯 Objective To measure the flow rate of water using a Water Flow Sensor (YF-S201) and Raspberry Pi 3. Useful in smart irrigation and water management systems. 🧰 Components Required Component Quantity Raspberry Pi 3 1 YF-S201 Water Flow Sensor 1 10K Pull-down Resistor 1 Jumper Wires As required Breadboard 1 ⚡ Circuit Connections Sensor Pin Connect To Red (VCC) 5V (Raspberry Pi) Black (GND) GND (Raspberry Pi) Yellow (Pulse Out) GPIO18 (Pin 12) with pull-down resistor 🧠 Python Code import RPi.GPIO as GPIO import time FLOW_SENSOR = 18 pulse_count = 0 def countPulse(channel): global pulse_count pulse_count += 1 GPIO.setmode(GPIO.BCM) GPIO.setup(FLOW_SENSOR, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) GPIO.add_event_detect(FLOW_SENSOR, GPIO.FALLING, callback=countPulse) try: while True: pulse_count = 0 time.sleep(1) flow_rate = (pulse_count / 7.5) ...

Introduction The HC-SR04 ultrasonic sensor is used to measure distance by sending and receiving ultrasonic waves. In this tutorial, we will interface the HC-SR04 sensor with Raspberry Pi 3 to measure the distance of an object. HC-SR04 अल्ट्रासोनिक सेन्सर अल्ट्रासोनिक तरंग पाठवून आणि प्राप्त करून अंतर मोजण्यासाठी वापरला जातो. या ट्यूटोरियलमध्ये, आपण HC-SR04 सेन्सरला Raspberry Pi 3 शी जोडून वस्तूचे अंतर कसे मोजायचे ते शिकू. Components Required | आवश्यक घटक: 1. Raspberry Pi 3 2. HC-SR04 Ultrasonic Sensor 3. Jumper Wires 4. Breadboard Circuit Diagram | सर्किट जोडणी: Connections: - HC-SR04 VCC → 5V (Pin 2) - HC-SR04 GND → GND (Pin 6) - HC-SR04 Trig → GPIO23 (Pin 16) - HC-SR04 Echo → GPIO24 (Pin 18) Python Code | पायथन कोड: import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) TRIG = 23 ECHO = 24 GPIO.setup(TRIG, GPIO.OUT) GPIO.setup(ECHO, GPIO.IN) def measure_distance():     GPIO.output(TRIG, True)     time.sleep(0.00001)     GPIO.output(TRIG, False)  ...

Interfacing Rain Sensor with Raspberry Pi 3 ☔ 🎯 Objective To detect the presence of rain using a Rain Sensor module with Raspberry Pi 3 and display alerts on the console. Perfect for smart weather stations and automatic window systems! 🧰 Components Required Component Quantity Raspberry Pi 3 1 Rain Sensor Module (Analog & Digital Output) 1 Jumper Wires As required Breadboard 1 ⚡ Circuit Connections Rain Sensor Pin Connect To VCC 5V (Raspberry Pi) GND GND (Raspberry Pi) D0 (Digital Out) GPIO17 (Pin 11) 🧠 Python Code import RPi.GPIO as GPIO import time RAIN_SENSOR_PIN = 17 GPIO.setmode(GPIO.BCM) GPIO.setup(RAIN_SENSOR_PIN, GPIO.IN) try: while True: if GPIO.input(RAIN_SENSOR_PIN) == 0: print("🌧️ Rain Detected!") else: print("☀️ No Rain.") time.sleep(1) except KeyboardInterrupt: GPIO.cleanup() 📊 Output Prints "🌧️ Rain Detected!" when...

Interfacing Gas Sensor (MQ2) with Raspberry Pi 3 🔥 🎯 Objective To detect gases like LPG, smoke, or methane using the MQ2 Gas Sensor and Raspberry Pi 3. Helpful for creating safety and fire alert systems. 🧰 Components Required Component Quantity Raspberry Pi 3 1 MQ2 Gas Sensor Module (with digital output) 1 Jumper Wires As required Breadboard 1 ⚡ Circuit Connections MQ2 Sensor Pin Connect To VCC 5V (Raspberry Pi) GND GND (Raspberry Pi) D0 GPIO27 (Pin 13) 🧠 Python Code import RPi.GPIO as GPIO import time GAS_SENSOR_PIN = 27 GPIO.setmode(GPIO.BCM) GPIO.setup(GAS_SENSOR_PIN, GPIO.IN) try: while True: if GPIO.input(GAS_SENSOR_PIN) == 0: print("🔥 Gas Detected!") else: print("✅ Air is Clean.") time.sleep(1) except KeyboardInterrupt: GPIO.cleanup() 📊 Output Displays "🔥 Gas Detected!" when smoke or gas is present. Shows "✅ Air is Cl...