Hello All
I have a question about the ADXL335.
I am trying to use the ADXL335 with the Particle Photon and reading the (x,y,z) using the docklight serial communication software and the Particle Console.
The values that I am getting is not correct!. These are samples for the values that I got
25.13 19.28 24.00
25.07 19.28 23.97
25.05 19.25 23.99
25.10 19.25 24.00
which looks not correct!
However, if I connect the ADXL335 with the Arduino Uno. I got these values which looks correct
0.19 -0.87 -0.28
-0.10 -0.56 -0.31
0.04 -0.12 1.07
0.02 0.18 1.19
-0.82 0.09 0.16
-0.85 0.09 -0.07
-0.93 0.15 0.04
0.79 0.20 0.84
Please any advice?
Here is the code that I’m using
//ADXL335
/********************************
ADXL335
note:vcc-->5v ,but ADXL335 Vs is 3.3V
The circuit:
5V: VCC
analog 0: x-axis
analog 1: y-axis
analog 2: z-axis
After burning the program, open the serial monitor debugging window, where you can see the data detected being displayed. When the acceleration varies, the figure will vary accordingly.
*********************************/
//Email:support@sunfounder.com
//Website:www.sunfounder.com
//2015.5.7
const int xpin = A0; // x-axis of the accelerometer
const int ypin = A1; // y-axis
const int zpin = A2; // z-axis (only on 3-axis models)
void setup()
{
// initialize the serial communications:
Serial.begin(9600);
}
void loop()
{
int x = analogRead(xpin); //read from xpin
delay(1); //
int y = analogRead(ypin); //read from ypin
delay(1);
int z = analogRead(zpin); //read from zpin
float zero_G = 338.0; //ADXL335 power supply by Vs 3.3V:3.3V/5V*1024=676/2=338
//Serial.print(x);
//Serial.print("\t");
//Serial.print(y);
//Serial.print("\t");
//Serial.print(z);
//Serial.print("\n");
float zero_Gx=331.5;//the zero_G output of x axis:(x_max + x_min)/2
float zero_Gy=329.5;//the zero_G outgput of y axis:(y_max + y_min)/2
float zero_Gz=340.0;//the zero_G output of z axis:(z_max + z_min)/2
float scale = 67.6;//power supply by Vs 3.3V:3.3v /5v *1024/3.3v *330mv/g =67.6g
float scale_x = 65;//the scale of x axis: x_max/3.3v*330mv/g
float scale_y = 68.5;//the scale of y axis: y_max/3.3v*330mv/g
float scale_z = 68;//the scale of z axis: z_max/3.3v*330mv/g
Serial.print(((float)x - zero_Gx)/scale_x); //print x value on serial monitor
Serial.print("\t");
Serial.print(((float)y - zero_Gy)/scale_y); //print y value on serial monitor
Serial.print("\t");
Serial.print(((float)z - zero_Gz)/scale_z); //print z value on serial monitor
Serial.print("\n");
delay(1000); //wait for 1 second
}
@ScruffR @peekay123 @Moors7
Thanks all in advance
