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Wireless Temperature Sensor

Have you ever wondered what the temperature was in your garage, attic, porch or anywhere in your home? A small, energy-efficient wireless temperature sensor enables the consumer to better understand their environment and adjust their environmental controls accordingly. This reference design can help kick-start your own connected home, smart appliances or smart energy designs.

The Wireless Temperature Sensor reference design is part of our Connected Home platform. At the heart of the design is a low-power nanoWatt XLP 16-bit PIC® microcontroller, the PIC24F32KA302. The MCP9808 temperature sensor has an operation range from −40°C to +125°C. The temperature data is transmitted via the MRF89XAM8A/9A sub-GHz wireless module. Two AA batteries provide power to the board.

Key Features


  • Low-power nanoWatt XLP 16-bit PIC microcontroller
    • 20 nA in sleep mode
    • 500 nA RTCC operation in sleep mode
  • Long battery life
  • −40°C to +125°C temperature range
    • ±0.25°C accuracy
    • 0.1 μA sleep current
  • RF Module Agency Certifications for Europe, US, Canada, Australia and New Zealand

Getting Started


Microchip Products

Available Reference Material

  • Circuit schematics
  • Gerber files (board layout)
  • Bill of materials

For more information on the Connected Home Concentrator, please email appliance@microchip.com

Class B Libraries


Notes

  1. The library is available as optional content in MPLAB® Code Configurator Melody and can be enabled in the Content Manager Tool. Follow the steps outlined in the user guide to get started.
  2. The IEC 60730 Class B library for Microchip’s Arm® Cortex®-M0+-based devices is supported by Hitex, and the library is also available from the Hitex website.

Note

  1. The VDE test report is included in the zip file with the Class B library
Title
MPLAB X CRC Calculator Test Project Download
CRC Calculator Download
Robustness on tinyAVR 0- and 1-series, and megaAVR 0-series Download
Using a Hardware or Software CRC with Enhanced Core PIC16F1XXX in Class B Applications Download

Products Supporting Class B


Wireless Temperature Sensor