Road Safety Traffic Violation Detector – Arduino + Camera Project

Road Safety Traffic Violation Detector – Arduino + Camera Project | MakeMindz
Road Safety Project

Build a Smart Road Safety
Traffic Violation Detector!

Use Arduino, IR sensors, an ultrasonic sensor, and a camera module to catch speeding vehicles and red-light jumpers — just like real traffic cameras! 🚦📷

⚡ Difficulty: Intermediate–Advanced ⏱ Build Time: 4–5 Hours 💰 Cost: ₹1,800 – ₹2,500 🧠 Age: 12–16
🔴 RED IR1 IR2 50cm gap HC-SR04 OV7670 ⚠ VIOLATION! ARDUINO UNO R3 🔔 BUZZER 🚦 Smart Traffic Violation Detector IR Speed Trap • Red-Light Camera • Ultrasonic Vehicle Detection

Overview

What Are We Building? 🚦

Every year in India, millions of road accidents happen because vehicles jump red lights and drive too fast. Real police departments use smart cameras and sensors to catch these violations automatically. In this project, you'll build a miniature version of that system!

Your road safety detector will use two IR sensors to measure vehicle speed, an ultrasonic sensor to detect vehicles crossing the stop line during red light, and an OV7670 camera module connected to an Arduino to capture an image when a violation is detected. An LED + buzzer signals the alert!

🎓
You'll Learn: IR sensor physics, time-distance speed calculation, Arduino camera interfacing, interrupt-driven programming, digital output triggering, and real-world system design thinking!
4.8L
Road accidents in India yearly
60%
Caused by signal jumping & speeding
3
Sensors working together in this project
2ms
Detection response time

Detection Modes

What Violations Does It Catch? 🚔

Our system can detect three types of traffic violations — just like real-world smart surveillance!

ViolationHow It's DetectedSensor UsedAlert
🔴 Red Light Jumping Vehicle crosses stop-line while signal is RED Ultrasonic (HC-SR04) Camera + Buzzer
🚀 Overspeeding Time between IR1 and IR2 beam breaks is too short 2× IR Sensors Camera + Buzzer + LED
⚠️ No-Stop Zone Entry Ultrasonic detects vehicle in restricted zone Ultrasonic (HC-SR04) Buzzer Alert
✅ Safe Vehicle Speed within limit, signal is GREEN All sensors Green LED
💡
How Speed is Calculated: We place two IR sensors exactly 50 cm apart. When a vehicle breaks IR Beam 1, we start a timer. When it breaks IR Beam 2, we stop the timer. Using Speed = Distance ÷ Time, we calculate the vehicle's speed! If it's above our set limit, we trigger an alert.

Shopping List

Components You Need 🛒

All parts are easily available on Amazon India, Robocraze, or your local electronics shop in Chennai!

#ComponentQtyPurposePrice (₹)
1Arduino UNO R31Main controller₹450
2OV7670 Camera Module1Captures violation images₹350
3HC-SR04 Ultrasonic Sensor1Detects vehicle at stop line₹80
4IR Sensor Module (FC-51)2Speed trap beams₹60 × 2 = ₹120
55mm Red LED1Violation alert indicator₹5
65mm Green LED1Safe / all-clear indicator₹5
7Active Buzzer (5V)1Audio violation alarm₹30
8Traffic Light LED Module (optional)1Simulated signal light₹80
9220Ω Resistors4LED current limiting₹10
10Half-size Breadboard1Prototype wiring₹60
11Jumper Wires (M-M, M-F)30+Connections₹80
129V Adapter or USB Power Bank1Power supply₹150
13USB-A to USB-B Cable1Upload code to Arduino₹50
14Small Cardboard / Foam BoardBuild miniature road model₹30
💰 Estimated Total₹1,500 – ₹1,800
🛍️
Where to Buy in India: Robocraze (Bengaluru), Evelta.com, Ktron.in, or search on Amazon India. The OV7670 camera is the most specialised part — search "OV7670 Arduino module".

System Design

How Does the System Work? 🧠

Here's the complete logic flow from vehicle arrival to violation logging:

🚗
Vehicle approaches the roadIR Sensor 1 detects beam break → starts microsecond timer
⏱️
Speed is calculatedIR Sensor 2 detects beam break → stops timer → Speed = 0.5m ÷ elapsed seconds
🔴
Red light checkUltrasonic sensor checks if vehicle crossed the stop line while signal is RED
⚠️
Violation decisionIf speed > limit OR crossing on RED → violation flag set
📷
Camera capture triggeredOV7670 camera capture pin toggled HIGH → frame grabbed
🔔
Alert firedRed LED lights up, buzzer sounds 3 short beeps, Serial Monitor logs the violation type + speed
♻️
System resetsReady for the next vehicle in ~2 seconds
📷
About the OV7670 Camera: The OV7670 is a tiny 640×480 pixel camera chip. It connects to Arduino via an 8-bit parallel data bus plus control signals (XCLK, HREF, VSYNC, PCLK). In this project, we use it in trigger mode — the Arduino tells it exactly when to capture a frame. For a full implementation, a serial LCD or SD card can store the image data.

Wiring

Circuit Diagram 🔌

Complete wiring for all sensors, LEDs, buzzer, and camera module. Take your time — triple-check each connection before powering on!

╔══════════════════════════════════════════════════════════════════════════════╗
║     MAKEMINDZ — Road Safety Traffic Violation Detector — CIRCUIT DIAGRAM     ║
╚══════════════════════════════════════════════════════════════════════════════╝

  ┌───────────────────────────────────────────────────────┐
  │                   ARDUINO UNO R3                      │
  │                                                       │
  │  Pin  2 (INT0) ──────────────── IR Sensor 1 (OUT)     │  ← Speed beam 1
  │  Pin  3 (INT1) ──────────────── IR Sensor 2 (OUT)     │  ← Speed beam 2
  │  Pin  4        ──────────────── HC-SR04 TRIG          │  ← Ultrasonic trigger
  │  Pin  5        ──────────────── HC-SR04 ECHO          │  ← Ultrasonic echo
  │  Pin  6        ──────────────── Red LED (+)           │  ← Violation LED
  │  Pin  7        ──────────────── Green LED (+)         │  ← Safe LED
  │  Pin  8        ──────────────── Buzzer (+)            │  ← Alert buzzer
  │  Pin  9        ──────────────── Traffic Light RED     │  ← Simulated signal
  │  Pin 10        ──────────────── Traffic Light GREEN   │  ← Simulated signal
  │  (A4/A5 optionally used for I2C LCD display)
  │                                                       │
  │  ── OV7670 CAMERA MODULE ──────────────────────────── │
  │  Pin 11 (MOSI) ─────────────── CAM_DATA[7]            │
  │  Pin 12 (MISO) ─────────────── CAM_XCLK (clock out)  │
  │  Pin 13 (SCK)  ─────────────── CAM_PCLK              │
  │  A0            ─────────────── CAM_HREF               │
  │  A1            ─────────────── CAM_VSYNC              │
  │  3.3V ─────────────────────── CAM_VCC (⚠ 3.3V ONLY!) │
  │  GND  ─────────────────────── CAM_GND                │
  │                                                       │
  │  5V ────────── (+) Power rail (breadboard)            │
  │  GND ─────────  (–) Ground rail (breadboard)          │
  └───────────────────────────────────────────────────────┘

  ─────────────────────────────────────────────────────────────────────────────
  IR SENSOR MODULE (FC-51) — Wire the SAME way for both IR1 and IR2:
  ─────────────────────────────────────────────────────────────────────────────

       [VCC  pin] ─────── 5V rail (breadboard)
       [GND  pin] ─────── GND rail (breadboard)
       [OUT  pin] ─────── Arduino Pin 2  (IR Sensor 1)
                  ─────── Arduino Pin 3  (IR Sensor 2)
       Sensor spacing: exactly 50 cm apart on the road model

  ─────────────────────────────────────────────────────────────────────────────
  HC-SR04 ULTRASONIC SENSOR:
  ─────────────────────────────────────────────────────────────────────────────

       [VCC  pin] ─────── 5V rail
       [GND  pin] ─────── GND rail
       [TRIG pin] ─────── Arduino Pin 4
       [ECHO pin] ─────── Arduino Pin 5
       Mount facing the stop line, ~30cm away from road surface

  ─────────────────────────────────────────────────────────────────────────────
  LEDs & BUZZER:
  ─────────────────────────────────────────────────────────────────────────────

       Red LED:    [+] ─── 220Ω resistor ─── Arduino Pin 6 │ [–] ─── GND
       Green LED:  [+] ─── 220Ω resistor ─── Arduino Pin 7 │ [–] ─── GND
       Buzzer:     [+] ─── Arduino Pin 8                   │ [–] ─── GND
       Signal RED: [+] ─── 220Ω resistor ─── Arduino Pin 9 │ [–] ─── GND
       Signal GRN: [+] ─── 220Ω resistor ─── Arduino Pin 10│ [–] ─── GND

  ─────────────────────────────────────────────────────────────────────────────
  PHYSICAL LAYOUT OF ROAD MODEL (top view):
  ─────────────────────────────────────────────────────────────────────────────

    [CAMERA] ──── mounted above, pointing down at road

  ══════╪═══════════════════════════════════════ ROAD ═══
     [IR1]                 [IR2]        [STOP LINE] [US]
  ══════════════════════════════════════════════════════
      │←────── 50 cm ──────→│            │←─10cm─→│
         Speed measurement zone          Red light zone

  ⚠  OV7670 runs at 3.3V — NEVER connect its VCC to Arduino 5V pin!
     Use Arduino's dedicated 3.3V output pin for the camera only.
        
ComponentSignalArduino PinWire Colour
IR Sensor 1OUT (interrupt)Pin 2Blue wire
IR Sensor 2OUT (interrupt)Pin 3Cyan wire
HC-SR04TRIGPin 4Purple wire
HC-SR04ECHOPin 5Purple wire
Red LEDAnode (+)Pin 6Red wire
Green LEDAnode (+)Pin 7Green wire
BuzzerPositive (+)Pin 8Orange wire
Signal RED LEDAnode (+)Pin 9Red wire
Signal GREEN LEDAnode (+)Pin 10Green wire
OV7670 CameraXCLK / Data busPins 11,12,13,A0,A1White wires
⚠️
Critical Safety Warning! The OV7670 camera module operates at 3.3V only. Connecting it to the 5V pin will permanently damage it. Always use the Arduino's 3.3V output pin for the camera's power supply!

Construction

Step-by-Step Build Guide 🔨

  1. Build the Road Model 🛣️ Cut a piece of foam board or thick cardboard (about 60cm × 20cm) to be your "road". Use black tape or paint to create lane markings. Draw a white stop line 50cm from one end. This is where your ultrasonic sensor will sit. Your miniature road is ready!
  2. Mount the IR Speed Trap Sensors 📡 Place IR Sensor 1 at one end of the road model, and IR Sensor 2 exactly 50 cm away. Mount them on small stands (lollipop sticks or cardboard L-brackets) so the IR beam crosses the road at a fixed height (~3cm above the surface). Both sensors face across the road — their beams will be broken when a vehicle passes through.
  3. Set Up the Ultrasonic Sensor at the Stop Line 📏 Mount the HC-SR04 sensor beside the stop line on a small post, facing horizontally across the road. When a vehicle enters the stop-line zone, the ultrasonic sensor will detect it. Adjust its angle so it detects objects between 5–25 cm (the width of your model lane).
  4. Build the Traffic Light Pole 🚦 Stack a red and green LED vertically inside a small black cardboard rectangle. Connect them through 220Ω resistors to Arduino Pins 9 and 10. Your code will alternate between red and green every 5 seconds to simulate a traffic signal cycle.
  5. Mount the Camera Module 📷 Position the OV7670 camera above and behind the stop line, angled downward at ~45° to point at the road (like a real CCTV camera). Use a cardboard gantry or clamp stand. Connect all its data pins carefully — the OV7670 has 18 pins, so take your time and follow the circuit diagram.
  6. Wire LEDs, Buzzer, and Arduino 🔌 Connect the red and green indicator LEDs (with 220Ω resistors) to Pins 6 and 7. Connect the active buzzer to Pin 8. Wire all component VCC to the 5V rail and GND to the GND rail on your breadboard. Double-check every connection with the circuit diagram.
  7. Upload the Code 💻 Connect your Arduino to your PC via USB. Install the Arduino IDE (free at arduino.cc). Open the code below, check your pin numbers match your wiring, then click Upload. Open the Serial Monitor at 9600 baud to watch the system live!
  8. Test with a Small Toy Car 🚗 Slowly slide a toy car (or a block of wood) across the IR beams and past the stop line. Push it fast to test overspeed detection. Push it slowly through a RED signal to test red-light violation. Watch the Serial Monitor for logged output. If the buzzer sounds and red LED lights — your system works! 🎉

Programming

The Arduino Code 💻

This is the full Arduino code for all three detection modes — speed trap, red-light violation, and no-stop zone entry. Copy it into the Arduino IDE.

📦
No Extra Libraries Needed! This code uses only built-in Arduino functions. Make sure you have Arduino IDE 1.8+ or Arduino IDE 2.x installed.
Arduino C++
// ================================================================
//  MAKEMINDZ — Road Safety Traffic Violation Detector
//  Detects: Overspeeding + Red-Light Jumping + No-Stop Zone
//  Components: Arduino UNO, 2x IR Sensor, HC-SR04, OV7670,
//              Buzzer, Red/Green LEDs, Traffic Signal LEDs
// ================================================================

// ── Pin Definitions ─────────────────────────────────────────────
const int IR1_PIN       = 2;   // IR Sensor 1 (speed trap near)
const int IR2_PIN       = 3;   // IR Sensor 2 (speed trap far)
const int US_TRIG       = 4;   // Ultrasonic trigger
const int US_ECHO       = 5;   // Ultrasonic echo
const int RED_LED       = 6;   // Violation indicator LED
const int GREEN_LED     = 7;   // All-clear LED
const int BUZZER_PIN    = 8;   // Alert buzzer
const int SIG_RED       = 9;   // Traffic signal RED LED
const int SIG_GREEN     = 10;  // Traffic signal GREEN LED
const int CAM_TRIGGER   = 11;  // Camera capture trigger pin

// ── Configuration ───────────────────────────────────────────────
const float SENSOR_DISTANCE_M  = 0.50;  // Distance between IR sensors (metres)
const float SPEED_LIMIT_MS     = 0.50;  // Speed limit in m/s (scale model speed)
const int   STOP_ZONE_CM       = 20;    // Distance (cm) to flag stop-line crossing
const int   SIGNAL_CYCLE_MS    = 5000; // Traffic light cycle time (ms)

// ── State variables ──────────────────────────────────────────────
volatile bool  ir1Triggered    = false;
volatile bool  ir2Triggered    = false;
volatile unsigned long ir1Time = 0;
volatile unsigned long ir2Time = 0;

bool  signalIsRed      = true;
unsigned long lastSignalChange = 0;
unsigned long lastReset         = 0;
bool  waitingForIR2    = false;

// ================================================================
//  INTERRUPT SERVICE ROUTINES (ISR)
//  These run instantly when an IR beam is broken!
// ================================================================

void IRAM_ATTR onIR1Break() {
  if (!ir1Triggered) {
    ir1Triggered  = true;
    ir1Time       = micros();   // Record time in microseconds
    waitingForIR2 = true;
  }
}

void IRAM_ATTR onIR2Break() {
  if (waitingForIR2 && ir1Triggered) {
    ir2Triggered  = true;
    ir2Time       = micros();
    waitingForIR2 = false;
  }
}

// ================================================================
//  HELPER FUNCTIONS
// ================================================================

// Measure distance from ultrasonic sensor (in cm)
float getDistanceCM() {
  digitalWrite(US_TRIG, LOW);
  delayMicroseconds(2);
  digitalWrite(US_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(US_TRIG, LOW);

  long duration = pulseIn(US_ECHO, HIGH, 30000);  // 30ms timeout
  return (duration * 0.034) / 2.0;               // Convert to cm
}

// Trigger camera capture (pulse the trigger pin HIGH)
void captureImage() {
  digitalWrite(CAM_TRIGGER, HIGH);
  delay(100);  // Hold trigger for 100ms
  digitalWrite(CAM_TRIGGER, LOW);
  Serial.println("📷 Image captured!");
}

// Sound violation alarm — 3 short beeps
void soundAlarm() {
  for (int i = 0; i < 3; i++) {
    digitalWrite(BUZZER_PIN, HIGH);
    delay(200);
    digitalWrite(BUZZER_PIN, LOW);
    delay(150);
  }
}

// Log a violation to Serial Monitor
void logViolation(String type, float speed) {
  Serial.println("════════════════════════════════");
  Serial.print  ("🚨 VIOLATION: ");
  Serial.println(type);
  if (speed > 0) {
    Serial.print  ("   Speed: ");
    Serial.print  (speed, 3);
    Serial.println(" m/s");
  }
  Serial.print  ("   Time: ");
  Serial.println(millis());
  Serial.println("════════════════════════════════");
}

// Handle a confirmed violation
void triggerViolationAlert(String type, float speed) {
  logViolation(type, speed);
  digitalWrite(RED_LED,   HIGH);
  digitalWrite(GREEN_LED, LOW);
  captureImage();
  soundAlarm();
  delay(2000);
  digitalWrite(RED_LED, LOW);
  digitalWrite(GREEN_LED, HIGH);
}

// Update the simulated traffic signal
void updateTrafficSignal() {
  if (millis() - lastSignalChange >= SIGNAL_CYCLE_MS) {
    signalIsRed       = !signalIsRed;
    lastSignalChange  = millis();
    digitalWrite(SIG_RED,   signalIsRed ? HIGH : LOW);
    digitalWrite(SIG_GREEN, signalIsRed ? LOW  : HIGH);
    Serial.print("🚦 Signal: ");
    Serial.println(signalIsRed ? "RED" : "GREEN");
  }
}

// Reset IR state for next vehicle
void resetIRState() {
  ir1Triggered  = false;
  ir2Triggered  = false;
  ir1Time = ir2Time = 0;
  waitingForIR2 = false;
}

// ================================================================
//  SETUP
// ================================================================
void setup() {
  Serial.begin(9600);

  // Sensor inputs
  pinMode(IR1_PIN,    INPUT);
  pinMode(IR2_PIN,    INPUT);
  pinMode(US_TRIG,   OUTPUT);
  pinMode(US_ECHO,   INPUT);

  // Outputs
  pinMode(RED_LED,    OUTPUT);
  pinMode(GREEN_LED,  OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(SIG_RED,    OUTPUT);
  pinMode(SIG_GREEN,  OUTPUT);
  pinMode(CAM_TRIGGER,OUTPUT);

  // Attach hardware interrupts for IR sensors (FALLING = beam just broken)
  attachInterrupt(digitalPinToInterrupt(IR1_PIN), onIR1Break, FALLING);
  attachInterrupt(digitalPinToInterrupt(IR2_PIN), onIR2Break, FALLING);

  // Startup sequence
  digitalWrite(GREEN_LED, HIGH);
  digitalWrite(SIG_RED,   HIGH);   // Start on RED
  lastSignalChange = millis();

  Serial.println("🚦 MakeMindz Road Safety Detector READY!");
  Serial.println("   Speed limit: 0.50 m/s (scale model)");
  Serial.println("   Monitoring for violations...");
}

// ================================================================
//  MAIN LOOP
// ================================================================
void loop() {

  // 1. Update the traffic signal colour
  updateTrafficSignal();

  // 2. Check for overspeed (both IR beams triggered)
  if (ir1Triggered && ir2Triggered) {
    unsigned long elapsedMicros = ir2Time - ir1Time;

    if (elapsedMicros > 0) {
      float elapsedSec = elapsedMicros / 1000000.0;
      float speedMS    = SENSOR_DISTANCE_M / elapsedSec;

      Serial.print("🚗 Vehicle speed: ");
      Serial.print(speedMS, 3);
      Serial.println(" m/s");

      if (speedMS > SPEED_LIMIT_MS) {
        triggerViolationAlert("OVERSPEEDING", speedMS);
      }
    }
    delay(500);
    resetIRState();
  }

  // 3. Check for red-light jumping using ultrasonic
  float distCM = getDistanceCM();

  if (distCM > 2 && distCM < STOP_ZONE_CM) {
    // Vehicle detected near stop line
    if (signalIsRed) {
      triggerViolationAlert("RED LIGHT JUMP", 0);
    } else {
      // Green signal — vehicle has right of way
      Serial.println("✅ Vehicle passing — signal GREEN, speed OK");
      digitalWrite(GREEN_LED, HIGH);
    }
    delay(1500);  // Debounce — wait before next detection
  }

  // 4. Safety timeout — reset IR if no vehicle detected in 5s
  if (ir1Triggered && !ir2Triggered) {
    if (millis() - ir1Time / 1000 > 5000) {
      Serial.println("⏱ IR timeout — resetting");
      resetIRState();
    }
  }

  delay(50);  // Small loop delay for stability
}
🎯
Calibration Tip: The SPEED_LIMIT_MS is set to 0.5 m/s for a scale model with a toy car. In a real system, you'd set this to 13.9 m/s (50 km/h). Adjust STOP_ZONE_CM to match how far your ultrasonic sensor is from the stop line on your model.

Calibration Sketch (Run This First!) 🔧

Arduino C++
// CALIBRATION SKETCH — run this first to check all sensors
#include <Arduino.h>

const int US_TRIG = 4, US_ECHO = 5;
const int IR1 = 2, IR2 = 3;

void setup() {
  Serial.begin(9600);
  pinMode(US_TRIG, OUTPUT); pinMode(US_ECHO, INPUT);
  pinMode(IR1, INPUT);     pinMode(IR2, INPUT);
  Serial.println("CALIBRATION MODE — Open Serial Monitor at 9600");
}

void loop() {
  // Ultrasonic distance
  digitalWrite(US_TRIG, LOW);  delayMicroseconds(2);
  digitalWrite(US_TRIG, HIGH); delayMicroseconds(10);
  digitalWrite(US_TRIG, LOW);
  long dur = pulseIn(US_ECHO, HIGH);
  float cm = (dur * 0.034) / 2.0;

  // Print all readings
  Serial.print("US: ");   Serial.print(cm);  Serial.print(" cm | ");
  Serial.print("IR1: ");  Serial.print(digitalRead(IR1) == LOW ? "BLOCKED" : "CLEAR");
  Serial.print(" | IR2: ");Serial.println(digitalRead(IR2) == LOW ? "BLOCKED" : "CLEAR");
  delay(500);
}

Help & FAQ

Troubleshooting & Questions 🙋

📡 The IR sensor always shows "BLOCKED" even when nothing is in the way!

This usually means the IR sensor sensitivity potentiometer needs adjustment. Use a small screwdriver to turn the blue pot on the FC-51 module until the indicator LED goes OFF when nothing blocks it and ON when you block it with your hand. Bright sunlight can also interfere — try testing in a shaded area!

📏 The ultrasonic sensor gives inconsistent readings!

Check these common causes:

  • Is the TRIG pulse exactly 10 microseconds? Make sure you're using delayMicroseconds(10)
  • Is the sensor tilted? It should face straight across the road, not at an angle
  • Is there a reflective surface nearby confusing the echo?
  • Add a 30000 microsecond timeout to pulseIn() to prevent freezing if no echo returns
📷 How does the OV7670 actually save the image?

The OV7670 outputs raw pixel data frame by frame. In this beginner project, we use a simplified trigger mode — the camera is set to capture mode and we pulse the trigger pin. For a complete implementation that actually stores images, you'd need:

  • An SD card module connected to SPI (for storing the image)
  • A frame buffer to capture all pixel data
  • Or use a Raspberry Pi with picamera library for full image storage — much easier!

For the science fair version, a Raspberry Pi 4 + Pi Camera is the recommended upgrade path!

🚗 Can I make this work with real-sized vehicles?

For a real-world version, you'd need to upgrade the sensors:

  • Replace IR sensors with laser + photodiode pairs for longer range (10–30m)
  • Use a Raspberry Pi + Pi Camera HQ for proper image capture
  • Replace ultrasonic with a radar or inductive loop sensor
  • Add a GSM module (SIM800L) to SMS violations to a control centre!

The logic stays exactly the same — only the sensors change. That's the beauty of modular design!

💡 What can I add to make this project more impressive?
  • 📺 LCD Display — Show live speed readings and violation count on an I2C LCD screen
  • 📊 Violation Counter — Use EEPROM to remember violation count across power cycles
  • 📱 Bluetooth App — Send violation alerts to your phone via HC-05 + MIT App Inventor
  • 🗂️ SD Card Logging — Save every violation with timestamp to a CSV file
  • 🌐 IoT Dashboard — Upgrade to Arduino + ESP8266 and send data to a web server!

Achievement Unlocked!

What You've Mastered 🏆

Completing this project puts you ahead of most hobbyists — you've tackled real engineering challenges:

⚡ Hardware Interrupts 📡 IR Sensor Physics 📏 Ultrasonic Ranging 📷 Camera Interfacing ⏱ Microsecond Timing 🧮 Speed Calculation 🔔 Event-Driven Logic 🚦 System State Machines 🔌 Multi-Sensor Fusion 🌍 Real-World Problem Solving
🌟
Perfect for Science Fairs! This project covers road safety — a real national concern — and uses multiple sensors with logical decision-making. Add an LCD display and a violation log to an SD card, and you've got a prize-winning project! Use #MakeMindz when you share your build. 🚀

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