Iot.Device.AnDWeightScale.TAnDWeightScale

A&D Weight Scale is a body weight scale from A&D Medical.

Use the TAnDWeightScale component to communicate with the A&D Weight Scale.

Demo Location

You can find the sample projects for the A&D Weight Scale in the following IoT demo directories after installing the component:

Start | Programs | Embarcadero RAD Studio Berlin | Samples and then navigate to:
- Delphi: Internet of Things\Object Pascal\Thing Connect\ANDConnect
- C++: Internet of Things\CPP\Thing Connect\ANDConnect

The A&D Weight Scale component supports the following Bluetooth LE services and characteristics:

Service	Characteristic	Property	Event
Battery Service	Battery Level	`BatteryLevel`	`OnBatteryLevelUpdate`
Device Information	Firmware Revision String	`FirmwareRevision`	`OnFirmwareRevisionUpdate`
	Hardware Revision String	`HardwareRevision`	`OnHardwareRevisionUpdate`
	IEEE 11073-20601 Regulatory Certification Data List	`IEEERegulatory`	`OnIEEERegulatoryUpdate`
	Manufacturer Name String	`ManufacturerName`	`OnManufacturerNameUpdate`
	Model Number String	`ModelNumber`	`OnModelNumberUpdate`
	Serial Number String	`SerialNumber`	`OnSerialNumberUpdate`
	Software Revision String	`SoftwareRevision`	`OnSoftwareRevisionUpdate`
	System ID	`SystemID`	`OnSystemIDUpdate`

A&D Weight Scale component supports the following custom services:

Service	Property	Event	Description
Custom Service 1		`OnAnDConnectWeightMeasurementUpdate`	Returns the TWeightScaleMeasurement data for the weight measurement.
	`AnDConnectWeightScaleFeature`	`OnAnDConnectWeightScaleFeatureUpdate`	Returns the TWeightScaleFeature data for the feature characteristics.
	`DateTime`	`OnDateTimeUpdate`	Date Time characteristic.
Custom Service 2	`AnDCustomCommandStatus`	`OnAnDCustomCommandStatusUpdate`	Returns the TAnDScaleCommandService data for the custom command and response characteristics.

The A&D Weight Scale defines its custom data types in the following unit:

The TWeightScaleMeasurement record type contains the custom data as a weight scale measurement characteristic.

Value: Raw array of bytes received from the device.
MeasurementUnitFlag: Specifies the unit system of the measurement.
- 0: Kilograms. International system.
- 1: Pounds. Imperial system.
WeightMeasurement: Returns the value of the weight measurement.
TimeStampPresentFlag: Indicates whether the TimeStamp value is present or not.
- 0: Not present
- 1: Present
TimeStamp: Returns the time value with type TDateTime.

The TWeightScaleFeature record type contains the custom features that are supported by the weight scale.

Value: Raw array of bytes received from the device.
TimeStampSupported: Indicates whether TimeStamp is supported.
- 0: Not supported.
- 1: Supported.
MultipleUsersSupported: Indicates whether multiple users are supported.
- 0: Not supported.
- 1: Supported.
BMISupported: Indicates whether BMI data is supported.
- 0: Not supported.
- 1: Supported.

The TAnDScaleCommandService record type contains the command to send to the A&D Weight Scale for the custom services.

Value: Raw array of bytes to be sent to the device.
CommandType: Type of the command: ReadCommand, WriteCommand, ResponseAtPeripheralOnly.
CommandID: Returns the command to handle device setting and status:
- 1: Set time.
- 3: Disconnect.
- 4: Read set time date.
- 16: Unpair.
- 17: Unit change.
- 18 Delete all memory.
- 19 Set gravity acceleration.
- 166: Set buffer size.
- 219: Read device settings.
- 225: Send buffer data request.
WeigthUnit: Unit system set by the constructor.
- 00: Kilograms.
- 01: Pounds.
GravityAcceleration: Gravity acceleration value set by the constructor.
BufferSize: Returns the buffer size.
TimeStamp: Time value that was set by the constructor.
ReadDeviceSettingsResponse: Returns a TAnDScaleDeviceSettingsResponse record type with the response data.
- GravityAcceleration: Gravity acceleration value. Valid range is from 9744 to 9999.
- MeasurementUnit: Measurement unit value set on the device:
  - 00: Kilograms.
  - 01: Pounds.
- BufferAvailability:
  - 00: No buffer available.
  - 01: Buffer available.
- CurrentBufferNumber: Current buffer number of the device. Valid range is from 0 to 90.
- SumOfMeasurements: Total number of measurements.

A&D Weight Scale device cannot be paired to a Windows machine. If the target platform of your application is 32-bit Windows or 64-bit Windows, it cannot be paired to the A&D Weight Scale.