Project Hub /Artificial Intelligence & Edge ML/License Plate Recognition (ANPR)/A Simple Timer Kit Based On Arduino Uno

Intermediate

ARDUINO

₹500 – ₹1,500

3 – 6 Hours

Partial Kit

A Simple Timer Kit Based On Arduino Uno

A simple and low-cost digital timer kit built around an Arduino Uno designed to measure time delays from milliseconds up to several minutes.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Arduino UNO R3 Board (Compatible) – ATmega328P Microcontroller with USB Cable Rs. 999.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: LCD (generic / unspecified)

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How It Works

The A Simple Timer Kit Based On Arduino Uno operates by utilizing the microcontroller's internal clock to measure elapsed time with high precision. The system is powered either through a USB cable or an external power supply to the Arduino Uno board. Users interface with the project via a push button for reset, which allows for manual clearing of the timer states. Visual output is handled by an LCD display, supported by a potentiometer for adjusting LCD contrast to ensure clear legibility of the elapsed time. The circuit connections are established using connecting wires on a breadboard or PCB, while resistors are incorporated where necessary for current limiting and signal conditioning. The Arduino Uno executes software written in the Arduino IDE, reading digital inputs from control signals or contacts and translating those state changes into milliseconds, seconds, or minutes displayed dynamically on the screen.

Why Build This

Gain practical undergraduate-level experience in interfacing character LCD displays and user input buttons with microcontroller hardware.

Develop reliable measurement instrumentation for testing response times and operating delays of industrial control equipment and circuit breakers.

Understand the implementation of precise timing logic and software-based delay measurement using the Arduino IDE environment.

Real-World Application

Measuring the response time and operating delays of industrial timer relays, circuit breakers, and other automation control equipment in laboratories or manufacturing plants.

Skills You'll Learn

Microcontroller digital input handling

LCD contrast tuning and character display interfacing

manual hardware reset circuit design

time-delay measurement logic implementation

Safety Precautions

Ensure that only potential-free external N/O or N/C contacts are used as start and stop contacts with a common ground.

Technology Tags

ARDUINO

LCD DISPLAY

TIMER

RELAYS

PCB DESIGN

C/C++

Frequently Asked Questions

What power supply should I use for the Arduino Uno?

You can power the board using a standard USB cable connected to a computer or USB wall adapter, or via an appropriate external power supply connected to the board's power jack.

Why is the text on the LCD display unreadable or blank?

This is typically caused by incorrect contrast settings. Adjust the potentiometer connected to the LCD contrast pin until the characters appear clearly.

Can I measure time intervals longer than a few minutes?

While the kit is primarily designed to measure from milliseconds up to several minutes, you can modify the software sketch in the Arduino IDE to extend the maximum timing threshold according to your application needs.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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