BDA446 is a high cost-effective Bluetooth output dynamic attitude sensor that can be widely used in equipment that requires high dynamic balance,such as model aircraft,robots , agricultural machinery,construction vehicles ,forklifts ,etc.This device collects data from sensors ,integrates Kalman filtering,and outputs real-time attitude data.Due to the use of three-axis accelerometer and three-axis magnetic sensors to assist three-axis gyroscopes and temperature compensation algorithm technology,the product achieves excellent stability and real-time performance in all attitudes ,and is widely used in various motion attitude monitoring fields.This product not only outputs attitude data ,but also three-axis acceleration,three-axis gyroscope and other data.At the same time,it can modify and expand system operating parameters ,suitable for various application platforms.This product adopts Bluetooth wireless output,Bluetooth 5.1 wireless transmission module ,and BLE protocol.Integrated 2.4GHz adaptive frequency hopping technology enables 40 meter line of sight transmission (unobstructed environment) and BLE DFU Bluetooth wireless firmware upgrade,significantly improving the flexibility of industrial field deployment.

| BDA446T | Condition | Parameter | |
|---|---|---|---|
| Measure range | - | Roll±180°, pitch±90°, azimuth±180° (initial value at power-down is 0°) | |
| Measure axis | - | X axis / Y axis / Z axis | |
| Roll&Pitch Static accuracy1) | @25℃ | ±0.05° | |
| Roll&Pitch Dynamic accuracy(rms) | @25℃ | ±0.1° | |
| Gyro | range | - | ±300°/s |
| Zero bias stability (10s Smooth) | - | 8.5°/h | |
| Angle random walk coefficient(Allan) | - | 0.25°/sqrt(h) | |
| Acceleration | range | - | ±4g / ±16g Can be set |
| Bias stability(10s mean) | - | 0.1mg | |
| Bias instability(Allan) | - | 0.005mg | |
| Speed random walk coefficient(Allan) | - | 0.005m/s/sqrt(h) | |
| Zero point temp. Coefficient2) | -20~65℃ | ±0.01°/℃ | |
| Sensitivity temp. Coefficient3) | -20~65℃ | ≤100ppm/℃ | |
| Power-on startup time | ≤3.5S | ||
| Response time | 0.01S | ||
| Electromagnetic compatibility | According to EN61000 and GBT17626 | ||
| reception sensitivity | -96dBm | ||
| transmit power | 8dBm | ||
| Bluetooth transmission distance | 40m(In an open and unobstructed state) | ||
| Usage time (battery fully charged) | About 30 days (at 25 ℃, working for 8 hours a day, sleeping for 16 hours) | ||
| Insulation resistance | ≥ 100 megaohms | ||
| Impact resistance | 100g@11ms Triaxial (half sine wave) | ||
| Anti-vibration | 10grms / 10~1000Hz | ||
| waterproof rating | IP67 | ||
| Shell material | ABS plastic shell | ||
| weight | ≤ 570g (excluding cable) | ||
1) Accuracy: Refers to the root mean square difference between the measured value and the actual angle error obtained by measuring the angle multiple times (>16 times) at room temperature.
2) Zero point temp. Coefficient: refers to the rate of change in the displayed value of a sensor relative to normal temperature within its rated operating temperature range when it is in a zero state.
3) Sensitivity temp. Coefficient: refers to the percentage of full-scale indication of a sensor relative to full-scale indication at room temperature within its rated operating temperature range, and the rate of change with temperature.
| Parameter | Condition | Min | Typ | max | unit |
|---|---|---|---|---|---|
| Charging voltage (DC) | standard | 4.5V | 5V | 12 | V |
| charging current | 0.8A | A | |||
| Charging Temperature | 0~+55℃(Note: Charging temperatures that are too high or too low can damage the battery) | ||||
| charging port | Type-C interface (power 5V, current greater than 1A) | ||||
| Charging time | 8 hours (25 ℃) | ||||
| Operating Temperature | -20 | +70 | ℃ | ||
| operating current | no-load | 15 | mA | ||
| Shutdown and sleep current | 150 | uA | |||
| Operating Temperature | -20 | +70 | ℃ | ||
| Storage temperature | -20 | +70 | ℃ | ||


