Trespassing Detector with Log
Build a Trespassing Detector with Timestamp Log Using Arduino – Complete Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
An unwanted entry triggers a buzzer, flashes an LED, and records the exact date and time to onboard memory. Connect to your computer and read the intrusion log via the Arduino IDE Serial Monitor. Perfect for school science projects, hobbyists, and young makers curious about real-world security systems.
What You'll Build
A working security sensor that detects motion using a PIR module and logs each event with a timestamp from the DS3231 real-time clock. The log is stored in the Arduino's EEPROM, so data persists even after power-off. You can retrieve the log any time, turning this into a practical evidence recorder.
What You'll Learn
- How PIR sensors detect heat signatures and trigger digital outputs
- Interfacing an I2C RTC module (DS3231) with Arduino
- Writing and reading data to EEPROM for persistent storage
- Outputting log data to the Serial Monitor and interpreting timestamps
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| HC-SR501 PIR Sensor | 1 |
| DS3231 Real Time Clock Module | 1 |
| Active Buzzer | 1 |
| 5mm Red LED | 2 |
| 10kΩ Resistors | 5 |
| 220Ω Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Jumper Wires | 20 |
| 9V Battery Snap | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Designed for beginners aged 5-15, this kit is ideal for CBSE Class 5-10 students working on security-themed science exhibitions, ATL Tinkering Lab projects, and early coding explorers in B.Tech ECE/EEE introductory labs. It's also a fun weekend project for parent-child bonding over real-world electronics.
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.
What if I get stuck during the build?
Scan the QR code to open your AI build companion, which understands this exact circuit. It can guide you step-by-step, and you can also reach out via WhatsApp for human help.
Can I view the log on a computer without an internet connection?
Yes, once programmed, the Arduino sends the log via USB to the Serial Monitor on your PC – no internet needed.
What happens if the PIR sensor triggers multiple times?
Each detection event is timestamped and added to the log. The EEPROM can hold dozens of entries, and you can clear it easily with a simple code command.
How do I make the detector portable?
The kit includes a 9V battery snap. Just connect a 9V battery (not included, to meet shipping safety) and mount the components in a box for a standalone alarm.
PIR detects intrusion and logs timestamp to EEPROM. Retrievable via serial monitor.
What's in this kit
- Arduino Uno R3
- HC-SR501 PIR
- DS3231 RTC
- Active Buzzer
- 5mm Red LED x2
- 10kΩ Resistors x5
- 220Ω Resistors x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items