im trying to calculate the distance measured from a starting point. i have interfaced the accelerometer usng arduino uno and obtained the reading on all 3 axes. i have considered the acceleration reading to be constant over the sampling interval and used that to calculate distance. this is the code.
float xdist;
float ydist;
float zdist;
const float g = 9.8;
const float xysampt = (1/6000);
const float zsampt = (1/3400);
void setup()
{
Serial.begin(9600);
}
void loop()
{
int xip=analogRead(A0);
int yip=analogRead(A2);
int zip=analogRead(A4);
int Xin= xip-356;
int Yin= yip-383;
int Zin= zip-464;
float xvolt= (Xin5)/1024;
float yvolt= (Yin5)/1024;
float zvolt= (Zin5)/1024;
float xacc = (xvoltg100)/0.8;
float yacc = (yvoltg100)/0.8;
float zacc = (zvoltg*100)/0.8;
float xvel = xacc * xysampt;
float yvel = yacc * xysampt;
float zvel = zacc * zsampt;
float xdisp = xvel * xysampt;
float ydisp = yvel * xysampt;
float zdisp = zvel * zsampt;
xdist += xdisp;
ydist += ydisp;
zdist += zdisp;
Serial.print("xaxis cm=");
Serial.print(xdist);
Serial.print("\t");
Serial.print("yaxis cm=");
Serial.print(ydist);
Serial.print("\t");
Serial.print("zaxis cm=");
Serial.print(zdist);
Serial.print("\n");
}
im getting the acceleration reading from the accelerometer. but im not getting the distance reading from this program. please tell me what my mistake could be
hi, i'm also a newbie trying to use an accelerometer.
as far as i know, i don't think it can measure distance - just the position it is in, relative to vertical (upright), horizontal(level) and "falling ?"
it doesnt measure distance.. just the instantaneous acceleration.. im trying to calculate the distance using that.