Semester 4 University Project - My Individual Work

Introduction

Welcome to my semester 4 university project! This project represents my individual work, and it comes with several important features:

• On/Off Switch: There's a main switch that turns the product on and off.
• Multimeter and Power Supply Modes: Another switch allows you to switch between two modes: multimeter and 5V power supply.
• Rotary Controls: You'll find two rotary switches designed for mode selection and adjusting the ohmmeter's scale.
• LED Display: All the important readings are conveniently displayed on an LED screen.
• Rechargeable Battery: What makes this product special is its built-in rechargeable battery system. Say goodbye to constant battery replacements; this product includes an integrated charger mechanism.

Specifications

• This product functions primarily as a multimeter and can also serve as a 5V DC power supply.

• The multimeter offers four distinct modes:

  1. Voltmeter

     • Measurement range: 0V to 50V

  2. Ammeter

     • Measurement range: 1mA to 2A

  3. Ohmmeter

     • Measurement range: 0 ohms to 1M ohms
     • It includes four resistance scales:
       • 0 to 1K ohms
       • 1K to 100K ohms
       • 100K to 400K ohms
       • 400K to 1M ohms

  4. Continuity Checker

• No need to change probes when switching to ammeter mode.

• This product features a charging capability, and when fully charged, it can operate continuously for up to 12 hours.

• A two-way switch allows easy mode switching between multimeter and power supply.

• Weight: 500g

• Dimensions: 13cm × 9cm × 2.5cm

  What You Can Find Here

• Component List

• Block Diagram

• Circuit Diagrams

• Schematics Designs

• PCB Designs

• Enclosure Design

For more information, feel free to explore all the files and data in my repository. I've included comprehensive documentation, source code, and additional resources for a deeper dive into this project. Your feedback and contributions are highly appreciated.

Component List

• Atmega328p Microcontroller
• 3P4T Rotary Switches
• 16*2 LCD Display
• Single Pole Double Throw Switch
• On-Off Switch
• 1200mAh LiPo Battery
• TP4056 Charging Module
• MT3608 Boost Converter

Block Diagram

Circuit Diagrams

Voltemeter

Ohmmeter

Ammeter

Schematic Designs

PCB Designs

Enclosure Designs