SEN0252

Gravity: BMX160+BMP388 10 DOF Sensor SKU:SEN0252 Introduction The BMX160 9-axis absolute orientation sensor from Bosch Sensortec is an ideal solution for applications that face strict constraints of board space, power consumption and appearance, especially for wearable device like smart watches or augmented reality glasses. This BMX160 sensor is the smallest 9-axis sensor in the industry. It comprises an accelerometer, gyroscope and geomagnetic sensor in a single package, and features less than 1.5mA power consumption. Combined with BSX sensor data fusion software library of Bosch Sensortec, the sensor performance can be further improved. BMP388 is a high performance barometric pressure sensor with compact body, high resolution, and the smallest size in same series. The BMP388 delivers outstanding altitude stabilization in drones, where accurate measurement of barometric pressure provides the essential altitude data for improving flight stability and landing accuracy. This module is a combination of BMX160 and BMP388 from DFRobot, which is perfectly suitable for using in drone applications to measure height, attitude and orientation. Features • BMX160 9-axis Sensor o Integrate 3 sensors: 16-bit accelerometer, 16-bit gyroscope and geomagnetic sensor o • Smart Power Management: normal, low power, and sleep BMP388 Barometric Pressure & Temperature Sensor o Temperature Detection o Barometric Pressure Measurement o Altitude Measurement o Indoor Navigation (floor, elevator detection) o Outdoor Navigation, leisure and sports applications o Vertical Velocity Indication (eg. rise/sink speed) Specification • • BMX160 9-axis Sensor o Accelerometer: ±2g/±4g/±8g/±16 o Gyroscope: ±125°/s~2000°/s o Geomagnetic Sensor: ±1150uT(x-,y-axis);±2500uT(z-axis) o Geomagnetic Sensor Resolution: 0.3μT o Default IIC Address: 0X68 BMP388 Barometric Pressure & Temperature Sensor o Operation Range: 300…1250 hPa o Relative Accuracy Pressure: ±0.08 hPa (equivalent to ±0.66m @700-900hPa, 25℃40℃) o Absolute Accuracy Pressure: ±0.5 hPa（0℃-65℃@300-1100hPa） o Temperature Coefficient Offset: ±0.75 Pa/K（-20℃-65℃@700-1100hPa） o Absolute Accuracy Temperature: ±0.5℃（@0℃-65℃） o Operating Temperature: -40℃~80℃ (more accurate in 0℃-65℃) o Default IIC Address: 0X76 • Dimension: 27mm x 32mm/1.06 x 1.26” • Mount Hole Position: 20mm • Mount Hole Size: inner 3mm/ outer 6mm • Interface: Gravity-IIC PH2.0-4P Board Overview Silkscreen Description +/VCC Positive -/GND Negative C/SCL IIC clock line D/SDA IIC data line 3V3 3.3V power ADDR(BMP388) BMP388 IIC address select ADDR(BMX160) BMX160 IIC address select CSB2 BMX160 protocol select pin INIT2 BMX160 external interrupt 2 INIT3 BMX160 external interrupt 1 CSB1 BMP388 Protocol select pin INIT1 BMP388 external pin API Function class DFRobot_BMX160 { /* * @function Gyroscope enum range, unit: G */ typedef enum{ eGyroRange_2000DPS, eGyroRange_1000DPS, eGyroRange_500DPS, eGyroRange_250DPS, eGyroRange_125DPS }eGyroRange_t; /*Gyroscope /*Gyroscope /*Gyroscope /*Gyroscope /*Gyroscope /* * @function Accelerometer */ typedef enum{ eAccelRange_2G, /* Macro 0.000061035mg) */ eAccelRange_4G, /* Macro 0.000122070mg) */ eAccelRange_8G, /* Macro 0.000244141mg) */ eAccelRange_16G /* Macro 0.000488281mg) */ }eAccelRange_t; sensitivity sensitivity sensitivity sensitivity sensitivity at at at at at 2000dps*/ 1000dps*/ 500dps*/ 250dps*/ 125dps*/ enum range, unit, m/s^2 for mg per LSB at +/- 2g sensitivity (1 LSB = for mg per LSB at +/- 4g sensitivity (1 LSB = for mg per LSB at +/- 8g sensitivity (1 LSB = for mg per LSB at +/- 16g sensitivity (1 LSB = /* * @function reset sensor * @Return true if it succeeds */ bool softReset(); /* * @function init sensor * @Return true if it succeeds */ bool begin(); /* * @function set gyroscope range, unit: G * @Parameter One variable from eGyroRange_t */ void setGyroRange(eGyroRange_t bits); /* * @function set accelerometer range, unit: m/s^2 * @Parameter One variable from eAccelRange_t */ void setAccelRange(eAccelRange_t bits); /* * @function Get data of accelerometer, gyroscope, geomagnetic sensor * @Parameter Store the address of all data */ void getAllData(struct bmx160SensorData *magn, struct bmx160SensorData *gyro, struct bmx160SensorData *accel); /* * @function Turn off geomagnetic sensor, gyroscope enters low power mode(there are data output from accelerometer) */ void setLowPower(); /* * @function Turn on geomagnetic sensor, gyroscope enters normal mode */ void wakeUp(); Tutorial The 10 DOF sensor integrates BMX160 and BMP388. Visit the IIc address of BMX160 (default: 0x68) and BMP388 (0x76) via I2C interface to get the related position data and environment information. Requirements • • Hardware o UNO Controller x 1 o BMX160+BMP388 10 DOF Sensor x 1 o Duponts Software o Arduino IDE o BMX160 Library o BMP388 Library o Download and install the XXX Library (About how to install the library?) Connection Diagram BMX160 Usage Tutorial Program Function: read data of accelerometer, gyroscope and geomagnetic sensor of BMX160 via I2C interface, and print the readings through serial port. /*! * file readAllData.ino * * Through the example, you can get the sensor data by using getSensorData: * get all data of magnetometer, gyroscope, accelerometer. * * With the rotation of the sensor, data changes are visible. * * Copyright [DFRobot](http://www.dfrobot.com), 2016 * Copyright GNU Lesser General Public License * * version V0.1 * date 2019-6-25 */ #include DFRobot_BMX160 bmx160; void setup(){ Serial.begin(115200); delay(100); //init the hardware bmx160 if (bmx160.begin() != true){ Serial.println("init false"); while(1); } //bmx160.setLowPower(); //disable the gyroscope and accelerometer sensor //bmx160.wakeUp(); //enable the gyroscope and accelerometer sensor //bmx160.softReset(); //reset the sensor /** @typedef enum{eGyroRange_2000DPS, * eGyroRange_1000DPS, * eGyroRange_500DPS, * eGyroRange_250DPS, * eGyroRange_125DPS * }eGyroRange_t; **/ //bmx160.setGyroRange(eGyroRange_500DPS); /** @typedef enum{eAccelRange_2G, * eAccelRange_4G, * eAccelRange_8G, * eAccelRange_16G * }eAccelRange_t; */ //bmx160.setAccelRange(eAccelRange_4G); delay(100); } void loop(){ bmx160SensorData Omagn, Ogyro, Oaccel; /* Get a new sensor event */ bmx160.getAllData(&Omagn, &Ogyro, &Oaccel); /* Display the magnetometer results (magn is magnetometer in uTesla) */ Serial.print("M "); Serial.print("X: "); Serial.print(Omagn.x); Serial.print(" "); Serial.print("Y: "); Serial.print(Omagn.y); Serial.print(" "); Serial.print("Z: "); Serial.print(Omagn.z); Serial.print(" "); Serial.println("uT"); /* Display the gyroscope results (gyroscope Serial.print("G "); Serial.print("X: "); Serial.print(Ogyro.x); Serial.print("Y: "); Serial.print(Ogyro.y); Serial.print("Z: "); Serial.print(Ogyro.z); Serial.println("g"); data is in g) */ Serial.print(" Serial.print(" Serial.print(" "); "); "); /* Display the accelerometer results (accelerometer data is in m/s^2) */ Serial.print("A "); Serial.print("X: "); Serial.print(Oaccel.x ); Serial.print(" "); Serial.print("Y: "); Serial.print(Oaccel.y Serial.print("Z: "); Serial.print(Oaccel.z Serial.println("m/s^2"); ); Serial.print(" ); Serial.print(" "); "); Serial.println(""); delay(500); } BMP388 Usage Tutorial For detailed usage of BMP388, refer to BMP388 wiki. The default BMP388 SDO pin is Low, IIC address: BMP3_I2C_ADDR_PRIM FAQ For any questions, advice or cool ideas to share, please visit the DFRobot Forum More Documents • Schematic Diagram • BNO055 Datasheet • BMP280 Datasheet https://wiki.dfrobot.com/Gravity%3A%20BMX160%2BBMP388%2010%20DOF%20Sensor%20SKU%3A%20SEN0252/12-5-19