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Motion-sensing security alarm with keypad
BeginnerBuild time 1–2 hours· You'll learn: Arduino, Motion sensing, Keypads
A passive-infrared sensor sees people moving across a room. Arm the alarm with a code on the membrane keypad; if anyone moves while it's armed the buzzer and LEDs go off until the code is entered again. Covers sensors, keypads and a simple state machine.
Complete kit
₹3,079
Every part below as one item: we collect, check and ship the whole set together, with one GST invoice. Ships in about 6 business days.
View complete kitParts only: available parts total
₹2,702
4 of 4 line items available now.
Electronics
| Part | Role | Qty | Unit | Line | Status |
|---|---|---|---|---|---|
| Arduino Nano compatible (CH340)Board | Controller | 1 | ₹270 | ₹270 | ships in about 6 business days |
| PIR motion sensor (Adafruit)Module | Motion sensor | 1 | ₹1,229 | ₹1,229 | ships in about 6 business days |
| 3 × 4 membrane keypad (Adafruit)Module | Arm/disarm code | 1 | ₹488 | ₹488 | ships in about 6 business days |
| Electronics fun kit with 830 breadboardKit | 830-point breadboard, jumper wires, LEDs, resistors, buttons and buzzer | 1 | ₹715 | ₹715 | ships in about 6 business days |
Prices are final and follow what Indian distributors have in stock (refreshed nightly). Out-of-stock parts are not added to the cart.