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How to capture ELA Beacon internal battery voltage? (view source)

Revision as of 17:46, 22 February 2022

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Broadcasting information can be classified into two main sections: Advertisement and scan response. In Scan Response frame, bytes 6 and 7 are listed as LSB and MSB, meaning that byte 7 should be calculated first and byte 6 second. Example: AC0B ->0BAC; 0BAC(hex) -> 2988(dec)*0.001 multiplier. Gives 2.988V internal battery voltage.  
 
Broadcasting information can be classified into two main sections: Advertisement and scan response. In Scan Response frame, bytes 6 and 7 are listed as LSB and MSB, meaning that byte 7 should be calculated first and byte 6 second. Example: AC0B ->0BAC; 0BAC(hex) -> 2988(dec)*0.001 multiplier. Gives 2.988V internal battery voltage.  
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[[File:Scan response.png|frameless|[https://elainnovation.com/wp-content/uploads/2020/10/BLE-Frame-specifications-11B-EN.pdf]|alt=|left|370x370px]]
 
[[File:Scan response.png|frameless|[https://elainnovation.com/wp-content/uploads/2020/10/BLE-Frame-specifications-11B-EN.pdf]|alt=|left|370x370px]]
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* Only sensors that are v3.0 support this functionality.
 
* Only sensors that are v3.0 support this functionality.
 
* ELA devices have ''Power supply 3 VDC – Internal lithium battery.''
 
* ELA devices have ''Power supply 3 VDC – Internal lithium battery.''
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== Examples of ELA sensor whole packet capturing ==
 
== Examples of ELA sensor whole packet capturing ==
 
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