Motion detection
The cube can detect information on the state of the cube such as the cube posture and collisions with motion sensors (6-axis detection system).
This information can be obtained using the following characteristics. The characteristics are the same as for Magnetic sensor and Posture Angle detection.
| Property | Value |
|---|---|
| Characteristic UUID | 10B20106-5B3B-4571-9508-CF3EFCD7BBAE |
| Properties | Write, Read, Notify |
| Descriptor | Sensor Information |
Write operations
Requesting motion detection information
The following data can be written to request motion detection information. When the cube receives a request, it sends one notification with the motion detection information.
| Data location | Type | Content | Example |
|---|---|---|---|
| 0 | UInt8 | Information type | 0x81 (Request for motion detection information) |
Read operations / Notifications
When the cube's motion sensor information changes, this characteristic notifies the BLE central of the new information. The notified information can also be obtained with a read operation.
The characteristics are the same as those for Magnetic sensor and Posture Angle Detection. As this information is also obtained, please also see Magnetic sensor - Read operations / Notifications and Posture Angle detection - Read operations / Notifications when using.
Obtaining motion detection information
Information on the cube's motion detection can be obtained with the following configuration data.
| Data location | Type | Content | Example |
|---|---|---|---|
| 0 | UInt8 | Information type | 0x01 (Detection) |
| 1 | UInt8 | Horizontal detection | 0x00 (Not horizontal) |
| 2 | UInt8 | Collision detection | 0x00 (No collision) |
| 3 | UInt8 | Double-tap detection | 0x00 (No double-tap) |
| 4 | UInt8 | Posture detection | 0x01 (Posture facing forward) |
| 5 | UInt8 | Shake detection | 0x00 (No shake) |
Horizontal detection
When the cube is horizontal, the value is 0x01 (horizontal), and when it is tilted at more than a certain angle (θ in the figure below), the value becomes 0x00 (not horizontal). The angle threshold can be set under Configuration - Horizontal detection threshold settings.
Roll orientation
.
Pitch orientation
.Collision detection
When something collides with the cube, the value changes from 0x00 (no collision) to 0x01 (collision).
The threshold for the size of the collision that is detected can be set under Configuration - Collision detection threshold settings.
Double-tap detection
If the cube is tapped once and then tapped again within a certain period of time, the value changes from 0x00 (no double-tap) to 0x01 (with double-tap). The time interval between taps can be set under Configuration - Double-tap detection time interval settings. The settings for the strength of taps that are detected are the same as for Configuration - Collision detection threshold settings.
Posture detection
This value changes when the orientation of the cube changes relative to the horizontal plane. The correlation between the values and the posture is as follows.
| Value | Cube posture |
|---|---|
1 | Top faces upward |
2 | Bottom faces upward |
3 | Rear side faces upward |
4 | Front side faces upward |
5 | Right side faces upward |
6 | Left side faces upward |
Cube posture: from left to right 1: Top faces upward and 2: Bottom faces upward
Cube posture: from left to right 3: Rear side faces upward and 4: front side faces upward
Cube posture: from left to right 5: Right side faces upward and 6: Left side faces upward
Shake detection
When the cube is shook, this value changes from 0x00 (no detection) to a value between 0x01 (Level 1) and 0x0a (Level 10) depending on the strength of the shake.