Isolating X-Axis Readings from Accelerometer Interference
I am creating a project that will use the input from the x-axis accelerometer to control the output of LEDs. I have no problem reading the output from the x-axis, but I find that when I move my project in the y-axis, it affects the x-axis readings. My project needs to read the deceleration of the x-axis without any other interference. How do I isolate the x-axis reading?
Any help would be greatly appreciated.
Solution:Jump to solution
A low pass filter smooths out rapid changes in data, so that will make x axis reading more stable U can using a formula: filteredValue = α * newReading + (1 - α) * oldFilteredValue
Where α (alpha) controls smoothing: lower α = more smoothing
U can add this code
const float alpha = 0.2;
float filteredX = 0;...
7 Replies
This is the code I'm working with
#include <Arduino_LSM9DS1.h> // Include the library for the LSM9DS1 IMU
void setup() {
Serial.begin(9600);
while (!Serial);
// Initialize the IMU
if (!IMU.begin()) {
Serial.println("Failed to initialize IMU!");
while (1);
}
Serial.println("IMU initialized!");
}
void loop() {
float x, y, z;
// Check if there is new acceleration data available
if (IMU.accelerationAvailable()) {
// Read the acceleration data
IMU.readAcceleration(x, y, z);
// Print the X-axis acceleration value
Serial.print("X: ");
Serial.println(x);
}
delay(500); // Delay for readability
}Hey @aymen ammari , consider using a low pass filter to reduce noise and sudden movements.
I want to eliminate Y axis is that Achievable? @wafa_ath
you can apply a strong low pass filter on x axis , and ignore reading from y axis completely on ur code
Can you explain more about low base filter and how I can apply it? Thank you
Solution
A low pass filter smooths out rapid changes in data, so that will make x axis reading more stable U can using a formula: filteredValue = α * newReading + (1 - α) * oldFilteredValue
Where α (alpha) controls smoothing: lower α = more smoothing
U can add this code
const float alpha = 0.2;
float filteredX = 0;
// In loop:
filteredX = alpha * newX + (1 - alpha) * filteredX;
Adjust alpha (0.05 to 0.5) to balance between smoothness and responsiveness.
Try this and give me ur feedback
I'll try this real quick, thank you @wafa_ath