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# DeviceInformation (UORB message)
Device information.
Can be used to uniquely associate a device_id from a sensor topic with a physical device using serial number.
as well as tracking of the used firmware versions on the devices.
**TOPICS:** device_information
## Fields
| 명칭 | 형식 | Unit [Frame] | Range/Enum | 설명 |
| ------------------------------------- | ---------- | ---------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| timestamp | `uint64` | | | time since system start (microseconds) |
| device_type | `uint8` | | [DEVICE_TYPE](#DEVICE_TYPE) | Type of the device. Matches MAVLink DEVICE_TYPE enum |
| name | `char[80]` | | | Name of device e.g. DroneCAN node name |
| `uint32` | | | Unique device ID for the sensor. Does not change between power cycles. (Invalid: 0 if not available) | |
| firmware_version | `char[24]` | | | Firmware version. (Invalid: empty if not available) |
| hardware_version | `char[24]` | | | Hardware version. (Invalid: empty if not available) |
| serial_number | `char[33]` | | | Device serial number or unique identifier. (Invalid: empty if not available) |
## Enums
### DEVICE_TYPE {#DEVICE_TYPE}
| 명칭 | 형식 | Value | 설명 |
| ------------------------------------------------------------------------------------------------------------------------------------------------ | ------- | ----- | ---------------------- |
| DEVICE_TYPE_GENERIC | `uint8` | 0 | Generic/unknown sensor |
| DEVICE_TYPE_AIRSPEED | `uint8` | 1 | 풍속 센서 |
| DEVICE_TYPE_ESC | `uint8` | 2 | ESC |
| DEVICE_TYPE_SERVO | `uint8` | 3 | Servo |
| DEVICE_TYPE_GPS | `uint8` | 4 | GPS |
| DEVICE_TYPE_MAGNETOMETER | `uint8` | 5 | 자기 센서 |
| DEVICE_TYPE_PARACHUTE | `uint8` | 6 | 낙하산 |
| DEVICE_TYPE_RANGEFINDER | `uint8` | 7 | Rangefinder |
| DEVICE_TYPE_WINCH | `uint8` | 8 | Winch |
| DEVICE_TYPE_BAROMETER | `uint8` | 9 | 기압계 |
| DEVICE_TYPE_OPTICAL_FLOW | `uint8` | 10 | Optical flow |
| DEVICE_TYPE_ACCELEROMETER | `uint8` | 11 | Accelerometer |
| DEVICE_TYPE_GYROSCOPE | `uint8` | 12 | Gyroscope |
| DEVICE_TYPE_DIFFERENTIAL_PRESSURE | `uint8` | 13 | Differential pressure |
| DEVICE_TYPE_BATTERY | `uint8` | 14 | Battery |
| DEVICE_TYPE_HYGROMETER | `uint8` | 15 | Hygrometer |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/DeviceInformation.msg)
:::details
Click here to see original file
```c
# Device information
#
# Can be used to uniquely associate a device_id from a sensor topic with a physical device using serial number.
# as well as tracking of the used firmware versions on the devices.
uint64 timestamp # time since system start (microseconds)
uint8 device_type # [@enum DEVICE_TYPE] Type of the device. Matches MAVLink DEVICE_TYPE enum
uint8 DEVICE_TYPE_GENERIC = 0 # Generic/unknown sensor
uint8 DEVICE_TYPE_AIRSPEED = 1 # Airspeed sensor
uint8 DEVICE_TYPE_ESC = 2 # ESC
uint8 DEVICE_TYPE_SERVO = 3 # Servo
uint8 DEVICE_TYPE_GPS = 4 # GPS
uint8 DEVICE_TYPE_MAGNETOMETER = 5 # Magnetometer
uint8 DEVICE_TYPE_PARACHUTE = 6 # Parachute
uint8 DEVICE_TYPE_RANGEFINDER = 7 # Rangefinder
uint8 DEVICE_TYPE_WINCH = 8 # Winch
uint8 DEVICE_TYPE_BAROMETER = 9 # Barometer
uint8 DEVICE_TYPE_OPTICAL_FLOW = 10 # Optical flow
uint8 DEVICE_TYPE_ACCELEROMETER = 11 # Accelerometer
uint8 DEVICE_TYPE_GYROSCOPE = 12 # Gyroscope
uint8 DEVICE_TYPE_DIFFERENTIAL_PRESSURE = 13 # Differential pressure
uint8 DEVICE_TYPE_BATTERY = 14 # Battery
uint8 DEVICE_TYPE_HYGROMETER = 15 # Hygrometer
char[80] name # Name of device e.g. DroneCAN node name
uint32 device_id # [-] [@invalid 0 if not available] Unique device ID for the sensor. Does not change between power cycles.
char[24] firmware_version # [-] [@invalid empty if not available] Firmware version.
char[24] hardware_version # [-] [@invalid empty if not available] Hardware version.
char[33] serial_number # [-] [@invalid empty if not available] Device serial number or unique identifier.
```
:::