IoT Sensor Board

Michelle Park & Justin Hong

Overview

• Goal: Develop a versatile, multi-functional sensor board tailored to IoT applications. We wanted to integrate a motion sensor through wireless connectivity options to facilitate response to discrepancies in the environment. 

• Major components

  • MCU (microcontroller) - data processing and connectivity modules

  • Power management system

• Circuit categories: Compute, Power, Sensing Actuation

• Relevant parts:

  • Compute: ESP32-S2-SOLO-N4  

  • Power: USB-C

  • Sensing: Motion Sensor

  • Actuation: OLED

Features

• Temperature Sensor:

• • Measures temperature/humidity

  • Uses SCL/SDA for I2C communication with ESP32

• Motion Sensor:

  • Detects change in motion

  • Communicates with ESP32 to signal this change

• OLED: 

  • Uses SCL/SDA for I2C communication with ESP32

  • Displays temperature when receiving data from ESP32

• Basic Data Communication:

  • Motion Sensor detects change in motion & signals to ESP32

  • ESP32 takes temperature measured by temperature sensor & signals to OLED

  • OLED takes data from ESP32 and displays this temperature to the screen