Build Your Own Portable Contactless Temperature Reader

Introduction

Covid-19 have been declared as pandemic. One of the early symptoms of corona virus was fever, and we are advised to reduce the direct contact. So, I try to develop a portable contactless temperature reader using ESP32 and Arduino platform. Later, you can improve the code to implement IoT in the application.

Before proceed to the tutorial, please go through following tutorial first on how to install and edit the library.

• Interface LSM9DS1 9DOF IMU With TTGO T-Display ESP32 - Install TFT_eSPI library and edit.
• Send Sensor Data to Adafruit IO Using ESP32 - Install MLX90614 library.

Video

This video shows how to build your own Portable Contactless Temperature Reader using Arduino platform.

Hardware Preparation

This is the list of items used in the video.

• TTGO T-Display ESP32
• MLX90614 Non-Contact Infrared Temperature Sensor
• 14500 Li-Ion Battery 3.7V 600mAh
• 1xAA Battery Holder
• Mini Slide Switch (PCB)
• Donut Board (Big) 10x24cm
• Straight Female Header 1x40 Ways

If you have 3D Printer, you can access - TinkerCAD 3D file, export to .stl and print your casing.

Sample Program

This is Arduino sample program for ESP32 board. Before compile, please install following libraries through Library Manager:

• TFT_eSPI by Bodmer Version 1.4.20
• MLX90614 Library by Adafruit Version 1.0.1

Thank You

References:

• Interface LSM9DS1 9DOF IMU With TTGO T-Display ESP32
• Send Sensor Data to Adafruit IO Using ESP32

Thanks for reading this tutorial. If you have any technical inquiries, please post at Cytron Technical Forum.

"Please be reminded, this tutorial is prepared for you to try and learn.
You are encouraged to improve the code for a better application."