Affordable Occupancy Sensor – Prototype & PCB

Overview

Prototyped and developed a low-cost occupancy sensor to detect human presence for energy-efficient automation applications.

Low-cost prototype Custom PCB Signal conditioning

What I Did

Designed sensor circuitry and signal conditioning for reliable detection.
Created schematic and PCB layout for a compact prototype.
Integrated sensor output with digital processing logic.
Tested accuracy and responsiveness under different conditions.

Occupancy sensor prototype — Prototype build for functional validation

Occupancy sensor schematic — Schematic: sensor + conditioning stage

PCB layout — PCB layout for compact prototype

Results

Successfully detected occupancy with consistent performance.
Delivered a functional, low-cost prototype suitable for developing countries.

Soldered PCB — Test scenarios to evaluate detection performance

What I Learned

Gained experience in sensor integration and PCB prototyping.