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Create Automatic power switching for Temperature sensor connected with ZigBee Module

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  • #1 21680650
    Derby Jhon
    Anonymous  
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  • #2 21680651
    Derby Jhon
    Anonymous  
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  • #3 21680652
    Elizabeth Simon
    Anonymous  
  • #4 21680653
    Aubrey Kagan
    Anonymous  
  • #5 21680654
    Derby Jhon
    Anonymous  
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  • #6 21680655
    Derby Jhon
    Anonymous  
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  • #7 21680656
    Aubrey Kagan
    Anonymous  
  • #8 21680657
    Elizabeth Simon
    Anonymous  

Topic summary

The discussion focuses on designing an automatic power switching circuit for a temperature sensor transmitting data via a ZigBee Pro module. The sensor is powered by either a 5V DC battery or a 5V AC-to-DC adapter, requiring a solution that prevents damage to the hardware. The temperature sensor used is the SHT31 (I2C interface), and the ZigBee Pro module is an XBee variant operating at 3.3V. Key challenges include managing different power sources, voltage regulation from 5V to 3.3V for the XBee, and ensuring safe switching without backflow current. A recommended approach involves using Schottky diodes to isolate power sources and a voltage regulator with an enable pin to supply stable 3.3V to both devices. Powering the sensor and XBee simultaneously is typical, but individual power control is more complex. Battery voltage considerations highlight that typical alkaline batteries provide 4.5V (3x1.5V) rather than a full 5V, and rechargeable options require charging circuitry. The discussion also references example schematics for XBee integration and datasheets for both devices to guide design decisions.
Summary generated by the language model.
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