Senior Movement Alert Kit with ESP32: Instant SMS Alerts for Fall and Gas Detection

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

When an elderly family member needs round-the-clock monitoring, a dedicated alert system can bridge the gap between independence and safety. This kit lets you build a compact device that uses ESP32 and SIM800L to send an SMS the moment a PIR sensor detects unexpected movement or a gas sensor breaches a safe threshold. Whether it's a fall in the bedroom or a LPG leak in the kitchen, your phone receives an alert within seconds — even if you're at work or asleep.

What You'll Build

You’ll assemble a stand-alone safety monitor powered by an ESP32 and a GSM module. It watches for motion via the HC-SR501 PIR sensor and checks gas concentration through an MQ-series compatible analog input (not included, but the kit’s breadboard and components make it easy to add one). On detection, the SIM800L instantly sends a pre-programmed SMS to a stored number. The system runs on a stable 4V supply from the LM2596 buck converter, with capacitors and resistors ensuring clean signals and reliable GSM performance — a real product that could be installed in any elderly person’s home.

What You'll Learn

• Program the ESP32 to read digital and analog sensor inputs and trigger actions based on thresholds.
• Configure a SIM800L GSM module using AT commands and integrate SMS sending into your code.
• Design a power circuit with an LM2596 buck converter to supply clean 4V from a USB power bank, avoiding SIM800L brownouts.
• Debounce PIR signals and use capacitors to filter noise, essential for reliable multi-sensor IoT projects.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11-12 students will find this a perfect sensor-based investigatory project combining IoT and communication. B.Tech ECE and EEE undergraduates can use it as a minor project or a base for their Smart India Hackathon entries, adding GPS or cloud logging. ATL Tinkering Labs and IIT/NIT/VIT/BITS makers seeking a practical, deployable elderly care solution will appreciate the real-world GSM integration.

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.