Arduino Safe Lock Simulator Kit: Program a 3-Digit Security System with Servo & Buzzer

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

Turn three ordinary potentiometers into a secure 3-digit safe lock. When the correct combination is dialed, the servo motor swings the lock open; a wrong entry triggers a warning buzzer. This kit introduces you to real-world security electronics, turning a simple Arduino project into a functional theft-deterrent prototype.

What You'll Build

You’ll assemble and program a working safe lock model with a servo-controlled latch. The three potentiometers act as rotary dials for digits 0–9, just like a bank locker mechanism. Once built, the system stays locked until the precise 3-digit code is entered — a genuine experience of access control electronics.

What You'll Learn

• Read analog values from potentiometers and map them to digit thresholds
• Program conditional logic in Arduino to compare a stored combination
• Control a servo motor to simulate lock/unlock action based on input
• Interface an active buzzer to provide auditory feedback for wrong attempts

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Young makers aged 8–15 who want to explore electronics through a fun security project. Perfect for CBSE/ICSE school science exhibitions, ATL Tinkering Lab activities, and STEM hobby clubs. If you're an absolute beginner with Arduino, this kit’s AI companion will walk you through every step — no prior coding experience needed. Even if you’re just starting robotics in Grade 5, the safe lock is a confidence-building, working model you’ll be proud to demonstrate.

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.