NOTE: 16-bit (4-digit) UUID's are adopted standards. 128-bit (32 digit) UUID's are custom
services or characteristics.
Standard Services per Bluetooth SIG
Reference adopted specifications at
Device Information Service (0x180A)
Characteristics
Number
Manufacturer
0x2A29
Name String
Model Number
0x2A24
String
Software Revision
0x2A28
String
Battery Service (0x180F)
Characteristics
Number
Battery Level
0x180F
Weight Scale Service (0x181D)
Characteristics
Number
Weight
0x2A9D
Measurement
Weight Scale
0x2A9E
Feature
If the weight is below zero (0), the weight you will see is zero (0).
If the weight is below zero (0), bit 4 of Weight Measurement will be set to 1, otherwise bit 4
is set to zero (0).
NOTE: Maximum weight value displayed is 655.35 in both pounds (lb) and kilograms (kg).
8
8555-0547-0M Rev B 750C Wi-Fi and Bluetooth Manual
INTERFACING TO BLE
https://www.bluetooth.com/specifications/gatt
Value(s)
"Detecto"
"750-C"
"1.0.XX" software of indicator
Value(s)
0x00 – 0x64 (uint16), represents 0 – 100
percent
Value(s)
<8bit Flag><uint16 weight><uint16 bmi>
<uint16 ht>
Supported Flags:
Flag bit0: 0 = SI, 1 = Imperial
bit3: 0 = BMI and Height not present
1 = BMI and Height present
bit4: 0 = Not below zero*
1 = Below zero*
SI:
Wt is KG with resolution 0.0005
Ht is meters with resolution 0.001
Imperial:
Wt is lbs with resolution 0.01
Ht is inches with resolution 0.1
NOT YET IMPLEMENTED
Attributes
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READ
Attributes
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Attributes
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INDICATE