Week of February 8th - 15th

-This week I continued to edit my code but kept running into difficulty. I am trying to display an acceleration in the micro range (10^-6) and higher.

-Meeting with my advisor this week so we can discuss the issue.

-Started to design the apparatus so I can separate the Arduino and accelerometer in order to minimize any additional vibrations.

-I attached a picture of the current setup.

Week of February 1st - 8th

-Locations have been chosen to measure vibration data

• Elevator Shaft
• Comp Sci Classroom (directly under telescope location)

-Ready to collect data based on my calculated parameters.

• Data will be recorded at a period of 0.01 seconds (T = 0.01sec)
• Record at a rate of 100Hz - 50Hz
• Resolution of 0.0025 of a second

-Need to make a few more changes to the code based on these parameters.

For the following week I want to determine the best way to record data. I used the plotter in Arduino (attached screenshots to the post).

Week of Jan 25th - February 1st

-Continuing to improve Arduino code in order to start collecting data.
-Adjusted the delay based on Arduino capablilties.
-Below is the code used in order to start collecting data

Will continue to improve this code in the coming week.

*/

/**************************************************************************/

#include <Wire.h>

#include <Adafruit_MMA8451.h>

#include <Adafruit_Sensor.h>

Adafruit_MMA8451 mma = Adafruit_MMA8451();

void setup(void) {

  Serial.begin(9600);

  

  Serial.println("Adafruit MMA8451 test!");

  

  if (! mma.begin()) {

    Serial.println("Couldnt start");

    while (1);

  }

  Serial.println("MMA8451 found!");

  

  mma.setRange(MMA8451_RANGE_2_G);

  

  Serial.print("Range = "); Serial.print(2 << mma.getRange());  

  Serial.println("G");

  

}

void loop() {

  // Read the 'raw' data in 14-bit counts

  mma.read();

  Serial.print("X:\t"); Serial.print(mma.x); 

  Serial.print("\tY:\t"); Serial.print(mma.y); 

  Serial.print("\tZ:\t"); Serial.print(mma.z); 

  Serial.println();

  /* Get a new sensor event */ 

  sensors_event_t event; 

  mma.getEvent(&event);

  /* Display the results (acceleration is measured in m/s^2) */

  Serial.print("X: \t"); Serial.print(event.acceleration.x); Serial.print("\t");

  Serial.print("Y: \t"); Serial.print(event.acceleration.y); Serial.print("\t");

  Serial.print("Z: \t"); Serial.print(event.acceleration.z); Serial.print("\t");

  Serial.println("m/s^2 ");

  

  /* Get the orientation of the sensor */

  uint8_t o = mma.getOrientation();

  

  switch (o) {

    case MMA8451_PL_PUF: 

      Serial.println("Portrait Up Front");

      break;

    case MMA8451_PL_PUB: 

      Serial.println("Portrait Up Back");

      break;    

    case MMA8451_PL_PDF: 

      Serial.println("Portrait Down Front");

      break;

    case MMA8451_PL_PDB: 

      Serial.println("Portrait Down Back");

      break;

    case MMA8451_PL_LRF: 

      Serial.println("Landscape Right Front");

      break;

    case MMA8451_PL_LRB: 

      Serial.println("Landscape Right Back");

      break;

    case MMA8451_PL_LLF: 

      Serial.println("Landscape Left Front");

      break;

    case MMA8451_PL_LLB: 

      Serial.println("Landscape Left Back");

      break;

    }

  Serial.println();

  delay(500);

  

}