SENSIRION SHT31 Smart Gadget User Manual

© Copyright Sensirion AG, Switzerland 1/11
SHT31 Smart Gadget User Guide
Reference Design and Development Kit for Applications with SHT3x Sensors
 SHT31 humidity and temperature sensor
 LCD display for humidity, temperature and dew point in °C and °F
 Bluetooth Low Energy (BLE) connectivity to iOS and Android smartphones
 iOS and Android apps available
 Data logging capabilities
 Complete hardware, firmware and software design resources available
Development Kit Contents
 Smart Gadget main PCB equipped with
SHT31 sensor, LCD display, push button and
BLE module, including battery, supports and
quick-start guide
 Apps for iOS and Android devices for
download in respective app stores
 Complete design resources available on
GitHub:
- Hardware design (PCB layout, BOM)
- Firmware code
- Bluetooth profile definition
- Source code for iOS and Android
apps
Introduction
The SHT31 Smart Gadget is a reference design circuit board which demonstrates the outstanding performance
and ease of use of Sensirion’s humidity and temperature sensors. It not only shows humidity and temperature
values on the display, but it can also communicate wirelessly with a Bluetooth Smart capable device like a
smartphone. For developers, full design resources of the SHT31 Smart Gadget are available on GitHub.

SENSIRION SHT31 Smart Gadget Specifications

General

Brand	SENSIRION
Model	SHT31 Smart Gadget
Category	Microcontrollers
Language	English

Summary

Introduction and Kit Contents

Introduction to SHT31 Smart Gadget

Overview of the SHT31 Smart Gadget as a reference design and development kit.

SHT31 Smart Gadget Development Kit Contents

Lists all items included in the SHT31 Smart Gadget development kit.

Quick Start Guide

Getting Started with SHT31 Smart Gadget

Initial setup steps including battery foil removal and board insertion.

Standalone Operation Guide

Instructions for using the Smart Gadget without a Bluetooth connection.

Enabling Bluetooth on Smart Gadget

Steps to activate the Bluetooth Low Energy feature on the device.

Using the Smart Gadget Mobile App

Guidance on operating the gadget with its companion smartphone application.

Standard Operation Details

SHT31 Smart Gadget Assembly Instructions

Detailed procedure for assembling the physical components of the Smart Gadget.

Standalone Mode Operation

How to operate the Smart Gadget displaying values on the LCD.

Bluetooth Mode Operation

Explanation of how to enable and use the Bluetooth Smart mode.

Connecting to Bluetooth Devices

Steps to connect the Smart Gadget to a smartphone via Bluetooth.

Smart Gadget as a Data Logger

Instructions on utilizing the device's data logging capabilities.

System Requirements for Smart Gadget

Specifies hardware and software requirements for mobile device compatibility.

Important Security Advice for Smart Gadget

Safety precautions related to handling, battery, and environmental conditions.

Developer Information

SHT31 Smart Gadget Hardware Overview

Details on the hardware components and design of the Smart Gadget.

Smart Gadget Block Diagram

Visual representation of the Smart Gadget's internal architecture and connections.

Bill of Materials for Smart Gadget

Comprehensive list of components used in the development kit.

Smart Gadget PCB Layout Details

Information and links to the printed circuit board layout files.

BLE Module Firmware

Information regarding the firmware for the Bluetooth Low Energy module.

Debugging the BLE Module Firmware

Guides and tools for debugging the firmware on the BLE module.

Required Tools for Debugging

Lists the necessary software and hardware tools for firmware debugging.

Preparation for Debugging

Steps to set up the Smart Gadget for the debugging process.

Flashing and Debugging BLE Firmware

Step-by-step procedure for flashing and debugging the BLE module firmware.

Smart Gadget BLE Profile Description

Explanation of the Bluetooth Low Energy profile, services, and characteristics.

Smart Gadget Bluetooth Device Behavior

Describes how the device behaves during BLE advertising and connection.

BLE Advertising and Connection Parameters

Details on device advertising intervals and connection parameter adjustments.

Smart Gadget Data Logging Functionality

How the logger operates and procedures for retrieving logged data.

LCD Driver Firmware Information

Details on the firmware required for operating the LCD driver.

Smart Gadget Software Applications

Information about the mobile applications for iOS and Android.

iOS SmartGadget App Source Code

Link to the source code repository for the iOS application.

Android SmartGadget App Source Code

Link to the source code repository for the Android application.

Revision History

Document Revision History

Records changes and updates made to the user guide document.