MPED

Smart Trashbin

Smart TraceBin is a mobile-controlled intelligent dustbin developed during my college fest. It features Bluetooth-based movement control using a smartphone app. Using a proximity sensor, the bin automatically opens its lid when waste is detected in front of it. The system also includes a waste-level detection mechanism that alerts when the bin becomes full.

1. Mobile-controlled movement via Bluetooth app
2. Automatic lid opening using object detection
3. Full-bin alert using waste level monitoring

Industrial Control and Automation

Industrial Control & Automation System This was my final-year B.Tech project focused on automating building infrastructure and controlling electrical systems remotely from a single control room. The system allowed centralized monitoring and control using a Bluetooth-based interface. Key Features

1. Remote Control of Electrical Appliances:Electrical loads such as AC and other appliances were controlled wirelessly from the control room.
2. Smart Multi-Level Car Parking Management:The system automatically counted vehicles at the entrance and exit.
3. When the ground floor parking was full, a motorized sliding gate opened to redirect vehicles to the upper-floor parking area. Vehicle exit from the upper floor was also automated through a dedicated sliding gate.
4. RFID-Based Automatic Exit Gate: An RFID access control system was implemented where employees could show their RFID card at the gate. Once authenticated, the sliding gate opens automatically and closes after the person exits.
5. Centralized Monitoring via Bluetooth: A security operator in the control room could monitor parking status, gate operation, and electrical appliances through a Bluetooth-based control panel.

Technologies Used: Microcontroller (ATMega), RFID Module, Bluetooth Module (HC-05), IR Sensors, Relay Control Panel, Motorized Sliding Mechanism

Fire & Burglar Alarm System

This was my first industrial product development project. I designed and developed a complete 16-zone Fire & Burglar Control Panel with real-time monitoring, fault detection, auto day/night logic, and GSM/PSTN alert system. The panel supports both Fire and Security (Burglar) zones and allows configuration directly from the keypad with password protection.

• Key Features

1. 16-Zone Panel 12 Zones configurable as Fire / Day / Night / Isolate 4 Zones dedicated for Day / Night / Isolate mode
2. Redundant Hooter Output (Fail-Safe Alarm) Two hooters are used — if one hooter circuit fails (cut/damaged), the other automatically activates.
3. Password Protected Menu System System settings can be accessed, updated, and password can be changed from keypad.
4. Real-Time Clock Integration Panel time can be set via keypad for event scheduling and timestamp logging.
5. Automatic / Manual Day–Night Mode Each of the 12 configurable zones can be set as Fire / Day / Night / Isolate. Automatic mode activates day/night zones based on preset time, including night delay feature.
6. GSM / PSTN Alert System Automatic Call/SMS alerts when Fire/Burglar event occurs. SMS/Call feature can be enabled/disabled as required.
7. Sensor Expandability In Fire zones, up to 50 Smoke / Heat / Gas sensors can be connected in parallel.
8. Fault Detection Detects Open circuit / Short circuit in sensor loops and indicates fault on display.
9. Dual Power Mode Works on AC mains and automatically switches to Battery backup during failure.
10. User Interface All configuration through 4×4 keypad LCD Display for live zone status and menu navigation
11. Remote Control Support Can be ARM / DISARM using RF remote.
12. Inbuilt Communication Modules GSM for SMS/Call alerts PSTN (Landline) support for traditional auto-dialing

Smart Coffee Vending Machine(QR-Based Access Authentication System)

This coffee machine was originally a simple push-button dispenser that served coffee/tea. I enhanced it by adding IoT functionality and access control features. I integrated a Wi-Fi module that connects the machine to the cloud, enabling remote authentication. A cloud server generates a unique link, and when the user opens it, a QR code is displayed on their mobile. I also added a camera module inside the machine to scan this QR code.

Once the QR code is scanned:

1. The camera sends the scanned data to the cloud.
2. The cloud validates the QR code.
3. If the data is valid, the machine activates the button.
4. The user presses the button, and the machine dispenses coffee/tea.
5. Dispensing data is also sent back to the cloud, and the QR code gets automatically expired.
This ensures that only authorized users can operate the machine and prevents misuse.

Key Highlights

• Added Wi-Fi module for cloud connectivity
• QR-based access authentication
• Camera-based QR scanning system
• Cloud verifies QR and activates dispensing button
• Usage data synced to cloud, and QR auto expires after use
Comming Soon Comming Soon

Industrial 6-DOF Robotic Arm Controller (MCU-Based Automation System)

This robotic arm system was originally PLC-based, and I redesigned its controller using a microcontroller (MCU) to reduce cost and improve flexibility. The robotic arm consists of six stepper-motor-controlled joints and operates in two modes: Automatic and Manual.
Operating Modes

1. Automatic Mode
Each arm (joint) can be assigned a specific angle using a 4×4 keypad and displayed on an LCD screen. When the user presses the Execute button, the controller rotates all arm joints to the assigned angles in sequence.
2. Manual Mode
Each arm can be selected individually using a selector switch.By holding the Execute button, the selected arm rotates manually without entering angles — useful for calibration and learning.

Safety Feature
Each arm is equipped with a limit switch. When reached, it stops further motion to protect the motor and prevent mechanical damage.

3.3 kW Smart EV Charger (IoT-Based Electric Vehicle Charger)

This is a fully automated 3.3 kW Electric Vehicle (EV) Charger developed by me. The charger is IoT-enabled and can be monitored and operated from a mobile application through Wi-Fi and cloud connectivity.
Key Features

• IoT + Wi-Fi Enabled
The charger connects to the internet through Wi-Fi and communicates with the cloud for monitoring and control
• QR-Based Authorization
A unique QR code is placed on the charger. The user scans the QR code using the dedicated mobile app to authenticate and start charging.
• Time-Based Charging Control
After scanning the QR, the app provides an option to select the charging duration (default 30 minutes, user can modify as required).
• Real-Time Monitoring of charging parameters
Using AC voltage sensor and current sensor, the charger continuously measures:
• Input AC voltage
• Charging current
• Automated Payment System
After charging is complete, the app automatically deducts the charging cost from:
• App wallet, or
• Linked bank account / UPI
• Location Tracking (Charger Map View)
The app displays nearby chargers on a map using their unique IDs, showing availability and location.
• Safety & Protection
An MCB is installed inside the charger to protect against over-current, overload, or short circuit.