I use Arduino Uno with an Accelerometre ADXL345-gy-291 (the full name of the ship) i did hook it up like this

note i'm using SPI Communication, that was the right one to use in my case. when i plug in my arduino here what does my serial monitor give me

as you can see, it sends back fixed values no matter the movement of the ship is. the code i use is :

#include <SparkFun_ADXL345.h>
ADXL345 adxl = ADXL345(10);

void setup(){ ` Serial.begin(9600); ` ` Serial.println("SparkFun ADXL345 Accelerometer Hook Up Guide Example");` ` Serial.println();` ` adxl.powerOn(); ` ` adxl.setRangeSetting(16); ` ` adxl.setSpiBit(0);` ` adxl.setActivityXYZ(1, 0, 0);` ` adxl.setActivityThreshold(75);` ` adxl.setInactivityXYZ(1, 0, 0);` `adxl.setInactivityThreshold(75);` ` adxl.setTimeInactivity(10);` ` adxl.setTapDetectionOnXYZ(0, 0, 1);` ` adxl.setTapThreshold(50);` ` adxl.setTapDuration(15);` ` adxl.setDoubleTapLatency(80);` ` adxl.setDoubleTapWindow(200);` ` adxl.setFreeFallThreshold(7);` ` adxl.setFreeFallDuration(30);` ` adxl.InactivityINT(1);` ` adxl.ActivityINT(1);` ` adxl.FreeFallINT(1);` ` adxl.doubleTapINT(1);` ` adxl.singleTapINT(1);` `}` `void loop(){` ` int x,y,z; ` ` adxl.readAccel(&x, &y, &z);` ` Serial.print(x);` ` Serial.print(", ");` ` Serial.print(y);` ` Serial.print(", ");` ` Serial.println(z); ` ` ADXL_ISR();` `}` `void ADXL_ISR() {` ` byte interrupts = adxl.getInterruptSource();` if(adxl.triggered(interrupts, ADXL345_FREE_FALL)){ Serial.println("*** FREE FALL ***"); }

if(adxl.triggered(interrupts, ADXL345_INACTIVITY)){ Serial.println("*** INACTIVITY ***"); }

if(adxl.triggered(interrupts, ADXL345_ACTIVITY)){ Serial.println("*** ACTIVITY ***"); }

if(adxl.triggered(interrupts, ADXL345_DOUBLE_TAP)){ Serial.println("*** DOUBLE TAP ***"); }

if(adxl.triggered(interrupts, ADXL345_SINGLE_TAP)){ Serial.println("*** TAP ***"); } }

so i wonder what was the mistake i made there  ?

I use Arduino Uno with an Accelerometer ADXL345-gy-291 (the full name of the ship) i did hook it up like this

Note I'm using SPI Communication, that was the right one to use in my case. when I plug in my Arduino here what does my serial monitor give me

as you can see, it sends back fixed values no matter the movement of the ship is. the code I use is :

#include <SparkFun_ADXL345.h>        
ADXL345 adxl = ADXL345(10);      
    
void setup(){
  
  Serial.begin(9600);               
  Serial.println("SparkFun ADXL345 Accelerometer Hook Up Guide Example");
  Serial.println();
  adxl.powerOn();                   
  adxl.setRangeSetting(16);         
  adxl.setSpiBit(0);
  adxl.setActivityXYZ(1, 0, 0);
  adxl.setActivityThreshold(75);
  adxl.setInactivityXYZ(1, 0, 0);
  adxl.setInactivityThreshold(75);
  adxl.setTimeInactivity(10);
  adxl.setTapDetectionOnXYZ(0, 0, 1);
  adxl.setTapThreshold(50);
  adxl.setTapDuration(15);
  adxl.setDoubleTapLatency(80);
  adxl.setDoubleTapWindow(200);
  adxl.setFreeFallThreshold(7);
  adxl.setFreeFallDuration(30);
  adxl.InactivityINT(1);
  adxl.ActivityINT(1);
  adxl.FreeFallINT(1);
  adxl.doubleTapINT(1);
  adxl.singleTapINT(1);
}
void loop(){
  int x,y,z;   
  adxl.readAccel(&x, &y, &z);
  Serial.print(x);
  Serial.print(", ");
  Serial.print(y);
  Serial.print(", ");
  Serial.println(z); 
  ADXL_ISR();
}
void ADXL_ISR() {
  byte interrupts = adxl.getInterruptSource();
  
  if(adxl.triggered(interrupts, ADXL345_FREE_FALL)){
    Serial.println("*** FREE FALL ***");
  } 
  
  if(adxl.triggered(interrupts, ADXL345_INACTIVITY)){
    Serial.println("*** INACTIVITY ***");
  }
  
  if(adxl.triggered(interrupts, ADXL345_ACTIVITY)){
    Serial.println("*** ACTIVITY ***"); 
  }
  
  if(adxl.triggered(interrupts, ADXL345_DOUBLE_TAP)){
    Serial.println("*** DOUBLE TAP ***");
  }
  

  if(adxl.triggered(interrupts, ADXL345_SINGLE_TAP)){
    Serial.println("*** TAP ***");
  } 
}

so I wonder what was the mistake I made there?