Porque va a quedar terminado o zanjado algo que ni siquiera vio la luz.
No quise opinar porque me la paso respondiendo todos y cada hilo pero tendré que dar mi punto de vista.
Empecemos por lo básico
Main Chipset: ADXL345
Communication: IIC/SPI Communication Protocol
Measuring Ranging: ±2g±16g
Digital Output: SPI/IIC
3-axis, ±2g/±4g/±8g/±16g
Compact Accelemotor/Inclinometer
Working Voltage: 3V to 5V
Working Temperature: -40° to 85°
Working Current: 30uA
Low Power Consumption
Compatible with 51, AVR, Arduino
Asi que puede medir aceleración en diferentes rangos, en que rango estamos? Hay que definirlo o por defecto esta en digamos ±2g?
Si mide aceleraciones, su salida será aceleraciones y ademas tmb inclinación... pues estara en otro registro.
Busquemos alguna librería, pues acá encontré una Libreria ADX345
Que trae este ejemplo
//Arduino 1.0+ Only!
//Arduino 1.0+ Only!
#include <Wire.h>
#include <ADXL345.h>
ADXL345 adxl; //variable adxl is an instance of the ADXL345 library
void setup(){
Serial.begin(9600);
adxl.powerOn();
//set activity/ inactivity thresholds (0-255)
adxl.setActivityThreshold(75); //62.5mg per increment
adxl.setInactivityThreshold(75); //62.5mg per increment
adxl.setTimeInactivity(10); // how many seconds of no activity is inactive?
//look of activity movement on this axes - 1 == on; 0 == off
adxl.setActivityX(1);
adxl.setActivityY(1);
adxl.setActivityZ(1);
//look of inactivity movement on this axes - 1 == on; 0 == off
adxl.setInactivityX(1);
adxl.setInactivityY(1);
adxl.setInactivityZ(1);
//look of tap movement on this axes - 1 == on; 0 == off
adxl.setTapDetectionOnX(0);
adxl.setTapDetectionOnY(0);
adxl.setTapDetectionOnZ(1);
//set values for what is a tap, and what is a double tap (0-255)
adxl.setTapThreshold(50); //62.5mg per increment
adxl.setTapDuration(15); //625μs per increment
adxl.setDoubleTapLatency(80); //1.25ms per increment
adxl.setDoubleTapWindow(200); //1.25ms per increment
//set values for what is considered freefall (0-255)
adxl.setFreeFallThreshold(7); //(5 - 9) recommended - 62.5mg per increment
adxl.setFreeFallDuration(45); //(20 - 70) recommended - 5ms per increment
//setting all interupts to take place on int pin 1
//I had issues with int pin 2, was unable to reset it
adxl.setInterruptMapping( ADXL345_INT_SINGLE_TAP_BIT, ADXL345_INT1_PIN );
adxl.setInterruptMapping( ADXL345_INT_DOUBLE_TAP_BIT, ADXL345_INT1_PIN );
adxl.setInterruptMapping( ADXL345_INT_FREE_FALL_BIT, ADXL345_INT1_PIN );
adxl.setInterruptMapping( ADXL345_INT_ACTIVITY_BIT, ADXL345_INT1_PIN );
adxl.setInterruptMapping( ADXL345_INT_INACTIVITY_BIT, ADXL345_INT1_PIN );
//register interupt actions - 1 == on; 0 == off
adxl.setInterrupt( ADXL345_INT_SINGLE_TAP_BIT, 1);
adxl.setInterrupt( ADXL345_INT_DOUBLE_TAP_BIT, 1);
adxl.setInterrupt( ADXL345_INT_FREE_FALL_BIT, 1);
adxl.setInterrupt( ADXL345_INT_ACTIVITY_BIT, 1);
adxl.setInterrupt( ADXL345_INT_INACTIVITY_BIT, 1);
}
void loop(){
//Boring accelerometer stuff
int x,y,z;
adxl.readAccel(&x, &y, &z); //read the accelerometer values and store them in variables x,y,z
// Output x,y,z values - Commented out
//Serial.print(x);
//Serial.print(y);
//Serial.println(z);
//Fun Stuff!
//read interrupts source and look for triggerd actions
//getInterruptSource clears all triggered actions after returning value
//so do not call again until you need to recheck for triggered actions
byte interrupts = adxl.getInterruptSource();
// freefall
if(adxl.triggered(interrupts, ADXL345_FREE_FALL)){
Serial.println("freefall");
//add code here to do when freefall is sensed
}
//inactivity
if(adxl.triggered(interrupts, ADXL345_INACTIVITY)){
Serial.println("inactivity");
//add code here to do when inactivity is sensed
}
//activity
if(adxl.triggered(interrupts, ADXL345_ACTIVITY)){
Serial.println("activity");
//add code here to do when activity is sensed
}
//double tap
if(adxl.triggered(interrupts, ADXL345_DOUBLE_TAP)){
Serial.println("double tap");
//add code here to do when a 2X tap is sensed
}
//tap
if(adxl.triggered(interrupts, ADXL345_SINGLE_TAP)){
Serial.println("tap");
//add code here to do when a tap is sensed
}
}
vean la de seteos postibles tiene, es sinceramente espectacular.
Sensibilidad, disparons, umbrales, todo pensado.. casi corriendo esto tal vez lo tengas medio encaminado.
Subiré la librería para una descarga directa, pero si lo buscas en el gestor debe haber otras similares que sirvan.
NOTA: Para el que no entienda aún, la unidad mg es milésimo de G (gravedad) así que la conversión es obvia.
sunrom-992100.zip (167 KB)
