Senior Movement Alert Kit v5 — ESP32 Elderly Safety & Energy Saver

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

Give your grandparent’s room an intelligent safety net that also shaves electricity bills. With this kit you build a wall‑mounted unit that watches for motion and traces of exhaled CO2, then decides when to switch on an air conditioner or fan — and when to leave it off. The ESP32 brain learns a simple occupancy pattern, so the HVAC runs only if an elderly person is actually inside.

What You'll Build

You will assemble a compact ESP32‑based monitor that fuses data from an HC‑SR501 PIR sensor, an MQ135 gas module (used as a CO2 proxy), and a DHT22 temperature‑humidity sensor. When motion coincides with a steady rise in CO2 — the hallmark of an occupied room — the board energises a 5V relay to pre‑condition the air. If the room stays still and gas levels drop, the relay cuts power, saving energy without compromising safety. The firmware ships as a working template that you can tweak and expand.

What You'll Learn

• Calibrating and reading the HC‑SR501 PIR motion sensor
• Interfacing the MQ135 as a CO2 proxy to detect room occupancy
• Programming the ESP32 to control a 5V relay based on fused sensor inputs
• Building energy‑aware IoT logic that conditions HVAC only when needed

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

A perfect starter for CBSE Class 11‑12 students investigating IoT in daily life, ATL Tinkering Lab participants, and first‑year B.Tech ECE/EEE learners who want a tangible build. If you are preparing for the Smart India Hackathon or a school science exhibition, this kit hands you a fully functional prototype that tackles both elder care and home energy management.

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.