Home Code Raspberry Pi and BMG160 angular rate sensor example

Raspberry Pi and BMG160 angular rate sensor example

by shedboy71

The BMG160 is an ultra-small, digital 3-axis angular rate sensor with a measurement range up to 2000°/s and a digital resolution of 16 bit for consumer electronics applications. The BMG160 allows low-noise measurement of angular rates in 3 perpendicular axes and is designed for use in cellular phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features, remote and game controllers.

With its small footprint of only 3 x 3 mm² the BMG160 is unique in the class of low-noise consumer electronics gyroscopes. The zero-rate offset and offset stability over temperature of the BMG160 are outstanding.

Parameter Technical data
Digital resolution 16 bit
Measurement ranges
(programmable)
± 125 °/s, ± 250 °/s,
± 500 °/s, ± 1000 °/s,
± 2000 °/s
Sensitivity (calibrated) ± 125°/s: 262.4 LSB/°/s
± 250°/s: 131.2 LSB/°/s
± 500°/s: 65.5 LSB/°/s
± 1000°/s: 32.8 LSB/°/s
± 2000°/s: 16.4 LSB/°/s
Zero-g offset (typ., over life-time) ± 1 °/s
Zero-rate offset over temperature 0.015 °/s/K
Noise density (typ.) 0.014 °/s/√Hz
Low-pass filter bandwiths (progr.) 230, 116, 64, 47, 32,
23, 12 Hz
Date rates (programmable) 2000, 1000,
400, 200, 100 Hz
Digital inputs/outputs SPI, I²C,
2x digital interrupts
Supply voltage (VDD) 2.4 … 3.6 V
I/0 supply voltage (VDDIO) 1.2 … 3.6 V
Temperature range -40 … +85 °C
Current consumption
– full operation
– low-power mode
5.0 mA
2.5 mA
FIFO data buffer 100 samples depth
(each axis)
LGA package 3 x 3 x 0.95 mm³
Shock resistance 10,000 g x 200 μs

 

Connection

Raspberry PI Module
3.3v Vcc
Gnd Gnd
SDA SDA
SCL SCL

 

Code

# Distributed with a free-will license.
# Use it any way you want, profit or free, provided it fits in the licenses of its associated works.
# BMG160
# This code is designed to work with the BMG160_I2CS I2C Mini Module available from ControlEverything.com.
# https://www.controleverything.com/content/Gyro?sku=BMG160_I2CS#tabs-0-product_tabset-2
import smbus
import time
# Get I2C bus
bus = smbus.SMBus(1)
# BMG160 address, 0x69
# Select range register, 0x0F(15)
# 0x80(128) Configure full scale range = 2000dps
bus.write_byte_data(0x69, 0x0F, 0x80)
# BMG160 address, 0x68(104)
# Select bandwidth register, 0x10(16)
# 0x04(04) Set bandwidth = 200Hz
bus.write_byte_data(0x69, 0x10, 0x04)
time.sleep(0.5)
# BMG160 address, 0x69
# Read data back from 0x02(02), 6 bytes
# X-Axis LSB, X-Axis MSB, Y-Axis LSB, Y-Axis MSB, Z-Axis LSB, Z-Axis MSB
data = bus.read_i2c_block_data(0x69, 0x02, 6)
# Convert the data
xGyro = data[1] * 256 + data[0]
if xGyro > 32767 :
xGyro -= 65536
yGyro = data[3] * 256 + data[2]
if yGyro > 32767 :
yGyro -= 65536
zGyro = data[5] * 256 + data[4]
if zGyro > 32767 :
zGyro -= 65536
# Output data to screen
print "X-Axis of Rotation : %d" %xGyro
print "Y-Axis of Rotation : %d" %yGyro
print "Z-Axis of Rotation : %d" %zGyro

Output

Here is the output

Link

CJMCU-160 Sensortec three axis gyro attitude sensor module BMG160

You may also like

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More