Arduino Bluetooth Parcel Alert Kit: Never Miss a Delivery

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Imagine a system that quietly watches your doorstep, instantly alerting your phone the moment a courier places a package. You build it yourself with an Arduino Uno, a sensitive load cell, and a Bluetooth link. When weight lands on your doormat-whether a small envelope or a heavy parcel-the HC-05 module pushes a notification, and a real-time clock stamps the exact delivery time. No more missed deliveries, no more wondering when the Amazon rider actually showed up.

What You'll Build

A compact weight-sensing plate that sits under any flat surface near your door. The Arduino Uno monitors the load cell through an HX711 amplifier; when weight exceeds your pre-set threshold (say, 100?grams), it triggers a Bluetooth message to your paired smartphone. Simultaneously, the DS3231 RTC logs the event with minute-level precision, viewable on your phone's serial terminal app. The two green LEDs provide visual feedback-one for power, one for detection-so you can also see the alert at a glance.

What You'll Learn

• Calibrate a 5kg load cell with the HX711 to measure subtle weight changes accurately
• Establish a reliable Bluetooth serial link using the HC-05 module and send custom alert strings
• Interface a DS3231 real-time clock and read timestamp data over I2C
• Design a low-power monitoring circuit that can run on a 9V battery or USB power bank

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11-12 students building a home automation project for their physics or computer science practicals. B.Tech ECE/EEE students who need a semester-end mini project that combines wireless communication, sensor interfacing, and real-time data logging. Smart India Hackathon participants prototyping a parcel-security solution for hostels or apartments. ATL Tinkering Lab mentors looking for a ready-to-assemble security-themed kit. If you've already blinked an LED with Arduino and want a practical next step, this kit is built for you.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.