SENSIRION SHT31 Smart Gadget Reference Design Download Page 1

 

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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. 

Summary of Contents for SHT31 Smart Gadget

Page 1: ...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 des...

Page 2: ...ugging 6 3 2 2 BLE Profile Description 8 3 3 Firmware for LCD Driver 10 3 4 Software 10 3 4 1 iOS SmartGadget App 10 3 4 2 Android SmartGadget App 10 Revision History 11 1 Quick Start Guide 1 Getting...

Page 3: ...is lost the Bluetooth symbol will start blinking Once the SmartGadget is within reach again the connection is established automatically The battery life is improved when the Bluetooth mode is disabled...

Page 4: ...t of reach of children and pets contains swallowable parts If any part is swallowed contact a physician immediately Battery type CR2032 Dispose of the battery properly special waste Smart Gadget opera...

Page 5: ...s github com Sensirion SmartGadget iOS Software code for Android app https github com Sensirion SmartGadget Android 3 1 Hardware 3 1 1 Block Diagram 3 1 2 Bill of Materials Component Type Qty Designat...

Page 6: ...n a n a 3 1 3 PCB Layout PCB layout data including schematic Gerber files assembly files and bill of materials is available on GitHub https github com Sensirion SmartGadget Hardware 3 2 Firmware for B...

Page 7: ...mware for the nRF51822 Bluetooth Low Energy Chip Folder BLE_Module_nRF51822 which runs the application and the firmware for the LCD Driver Folder LCD_Driver_MC9S08LL8 The scope lies on the nRF51822 th...

Page 8: ...re are five services available The Device Information Service contains information about the device manufacturer versions etc The Battery Service contains a Battery Level Characteristic Level in The L...

Page 9: ...follow this procedure o Subscribe for notification of the Value Characteristics of the desired services e g Humidity and or Temperature Characteristics o Write your host current timestamp 64bit milli...

Page 10: ...e found on GitHub https github com Sensirion SmartGadget Firmware tree master LCD_Driver_MC9S08LL8 3 4 Software 3 4 1 iOS SmartGadget App The software code for the Smart Gadget iOS app can be found on...

Page 11: ...0 info sensirion com www sensirion com Sensirion Inc USA Phone 1 805 409 4900 info_us sensirion com www sensirion com Sensirion Japan Co Ltd Phone 81 3 3444 4940 info sensirion co jp www sensirion co...

Page 12: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Sensirion 1 101294 01 SHT31 SMART GADGET...

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