BerryGPS-IMU v4 has been specifically designed for the Raspberry Pi Zero. It is also compatible with all other versions of the Raspberry Pi. It includes logic level shifters for 5v MCUs, which means it is also compatible with an Arduino too.
BerryGPS-IMU v4 is a GPS module which also includes all the sensors found in the BerryIMU v3.
The sensors found on the BerryGPS-IMU v4 are:
GPS
Accelerometer
Gyroscope
Magnetometer (Compass)
Barometric/pressure sensor (altitude)
Temperature
We have also made the BerryIMU compatible with the SparkFun QWIIC echo system.
BerryGPS-IMU v4 uses the CAM-M8 from uBlox, which is an advanced high quality GPS module.
3 concurrent GNSS: Concurrent reception of up to 3 GNSS (GPS, Galileo, GLONASS, BeiDou)
Embedded Antenna: Embedded, omnidirectional and wideband antenna
Super Cap: The SuperCap keeps the ephemeris data stored in the battery backup RAM for 2 hours. This allows for faster acquisitions when the module is power cycled.
Fix and PPS indicator: The on board LED will flash once a second when a fix has been obtained. The PPS signal is also presented on an output pin.
Time Pulse Output (PPS): 0,25Hz - 10MHz (default 1Hz)
Protocols: NMEA, UBX binary, RTCM
Update Rate: Single GNSS - up to 18Hz, Dual GNSS up to 10Hz
Connection for external antenna: BerryGPS-IMU v4 also includes a uFL connector for an external antenna, which can be used when BerryGPS-IMU v4 doesn't have clear access to the sky.
u-Center: A graphical interface to test and configure the GPS module on the BerryGPS-IMU
Low current consumption, <200uA when using Periodic mode.
Receiver Type;
72-channel u-blox M8 engine
GPS/QZSS L1 C/A, GLONASS L10F,
BeiDou B11, Galileo E1B/C
SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN
3.3v supply
NMEA, UBX binary, RTCM
UART 4800/9600/38400/115200/230400/460800 bps
Max update rate 10 Hz
Horizontal position accuracy <2.5m CEP
Acquisition sensitivity -148dBm
Tracking sensitivity -167dBm
Hot start <1s
Assisted start <3s
Cold start <26s
Orbit prediction
1PPS Sync
Fix/PPS LED
One external pin for wake up
Embedded antenna
Connector for external antenna
SuperCap to help store ephemeris data.
IMU
An inertial measurement unit, or IMU, measures and reports on velocity, orientation and gravitational forces, using a combination of an accelerometer, gyroscope and a magnetometer.
BerryGPS-IMU v4 is also fitted with a barometric sensor (BM388) which can be used to calculate altitude. A temperature sensor is also included.
IMUs can be found in devices like, quadcopters, smart phones, segways, Wii Remote etc.. and are used to sense movement and orientation.
Technical specifications of IMU
Gyroscope - LSM6DSL
i2c and SPI interface
Measurement range ±125/±250/±500/±1000/±2000 dps
Sensitivity 4.375, 8.75, 17.50, 35, 70 mdps
Accelerometer - LSM6DSL
i2c and SPI interface
Scales of ±2g / ±4g / ±8g / ±16g
Magnetometer - LIS3MDL
i2c and SPI interface
Magnetic field full scale of ±4 / ±8 / ±12 / ±16 gauss.
Internal temperature sensor
Barometric Sensor BMP388
i2c interface
Pressure range 300 ... 1250 hPa
Resolution of data: Pressure: 0.18 Pa (eqiuv. to <10 cm)
Absolute accuracy ±50 Pa
Relative accuracy ± 8Pa (equiv. to ±0.6 m)
Temperature range -40 ...+85 °C
BerryGPS-IMU v4 is compatible with all models of Raspberry Pi, including Pi 2, Pi 3, Pi 4 and Zero as well Arduino
BerryGPS-IMU v4 comes with;
BerryGPS-IMU PCB
1 x female header
4 x nylon standoffs, nuts and screws
Raspberry Pi, Antenna or QWIIC connector are not included.
Some very basic soldering is required to solder on the female header.
