LSM9DS0TR (PR9-18) Accelerometer Values

timgntx · November 5, 2020, 2:48pm

Hello - I’m attempting to use the LSM9DS0TR Mini Module (PR9-18) for vibration monitoring (via Raspberry Pi) and have been receiving static values for each of the axis when using the following script:

github.com

ControlEverythingCommunity/CE_PYTHON_LIB/blob/master/LSM9DS0.py

# 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.
# LSM9DS0
# This code is designed to work with the LSM9DS0_I2CS I2C Mini Module available from ControlEverything.com.
# https://www.controleverything.com/content/Accelorometer?sku=LSM9DS0_I2CS#tabs-0-product_tabset-2

import smbus
import time

# Get I2C bus
bus = smbus.SMBus(1)

# I2C Address of the device
LSM9DS0_MAG_ADDRESS				= 0x1E
LSM9DS0_ACCL_ADDRESS			= 0x1E
LSM9DS0_GYRO_ADDRESS			= 0x6A

# LSM9DS0 gyrometer registers
LSM9DS0_WHO_AM_I_G				= 0x0F
LSM9DS0_CTRL_REG1_G				= 0x20

This file has been truncated. show original

Output:

I’m not particularly concerned about gyro and magnetometer data (other than that the sensor is not returning values). Is there a calibration procedure required for this chip? Anything else I’m missing?

Thanks!
Tim

Bhaskar · November 5, 2020, 6:12pm

Tim,
I never used this python script.
here are few things you will need to set

data rate
range
mode

This should give you raw acc value. in order to calculate vibration you will need add filter and remove noise and will also require 6 point calibration.