Arduino & Wearable Electronics Free Updated Sep 03, 2026

Non-Contact Infrared Thermometer with Voice Output

Build an instant forehead temperature scanner with MLX90614 sensor and synthesized voice readout.

Project Overview

Construct a medical-grade contactless infrared thermometer that reads body temperature in 0.5 seconds and speaks the temperature aloud.

Components

  • Melexis MLX90614 DCI infrared thermopile sensor (±0.2°C accuracy)
  • DFPlayer Mini MP3 module with recorded voice prompts
  • Proximity sensor to auto-trigger measurement at 5cm distance
  • Color-coded RGB status indicator (Green/Yellow/Red)