restructure repository

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diff --git a/Digital Photoreactor Controller Firmware/Test Sketchs/.DS_Store b/Digital Photoreactor Controller Firmware/Test Sketchs/.DS_Store
deleted file mode 100644
index 448e0b3..0000000
--- a/Digital Photoreactor Controller Firmware/Test Sketchs/.DS_Store
+++ /dev/null
diff --git a/Digital Photoreactor Controller Firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino b/Digital Photoreactor Controller Firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino
deleted file mode 100644
index ac5f249..0000000
--- a/Digital Photoreactor Controller Firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino
+++ /dev/null
@@ -1,134 +0,0 @@
-////////////////////////////////////////////////////////////////////////////////////
-// I2C test program for Digital Photoreactor Controller using TinyWireS library   //
-//                    Run this Master program on an Arduino Uno.                  //
-////////////////////////////////////////////////////////////////////////////////////
-// This test program is adapted from the TinyWireS stress test program            //
-// developed by Scott Hartog: https://github.com/rambo/TinyWire                   //
-//                                                                                //
-// The master program picks a random number of bytes between 1 and 12.            //
-// It then sends that many bytes of randomd data to the AtTiny85 slave.           //
-// Then, the master reads that same number of bytes back from the slave.          //
-// The recieved data is then compared to the original transmitted data.           //
-// The results of this comparison are displayed  in the serial monitor.           //
-//  The process is then looped.                                                   //
-//                                                                                //
-// BREADBOARD SETUP:                                                              //
-// Arduino Uno R3 (D18/SDA) = I2C SDA                                             //
-//     connect to SDA on slave with external pull-up (~4.7K)                      //
-// Arduino Uno R3 (D19/SCL) = I2C SCL                                             //
-//     connect to SCL on slave with external pull-up (~4.7K)                      //
-// Arduino Uno R3 (D2)                                                            //
-//     connect to !RST on slave                                                   //
-//     Can alternatively connect !RST on slave to the Ardiuno "!RESET" pin        //
-//                                                                                //
-////////////////////////////////////////////////////////////////////////////////////
-
-#include <Wire.h>
-
-#define I2C_SLAVE_ADDR  0x26            // i2c slave address (38, 0x26)
-
-uint16_t count = 0;       // total number of passes so far
-uint16_t error_count = 0; // total errors encountered so far
-
-char c_buf[64]; // for creating messages
-
-void setup()
-{
-
-  // init the serial port
-  Serial.begin(9600);
-
-  // init the Wire object (for I2C)
-  Wire.begin(); 
-  
-  // wait for slave to finish any init sequence
-  delay(2000);
-}
-
-void loop()
-{
-  uint8_t i;
-  uint8_t req_rtn;       // num bytes returned by requestFrom() call
-  uint8_t rand_byte_count;
-  uint8_t out_rand[16];  // data written from master
-  uint8_t in_rand[16];   // data read back from slave
-
-  bool mismatch;
-
-  // count total number of request
-  count++;
-
-  // compute random number of bytes for this pass
-  rand_byte_count = random(16) + 1;
-
-  // force the first three requests to be small so that the tx buffer doesn't overflow
-  // instantly and the user can see at least one successful transaction and some
-  // mismtaches before the usiTwiSlave.c library hangs on the line "while ( !txCount );".
-  if (count <= 3) rand_byte_count = 2;
-
-  // generate, save, and send N random byte values
-  Wire.beginTransmission(I2C_SLAVE_ADDR);
-  for (i = 0; i < rand_byte_count; i++)
-    Wire.write(out_rand[i] = random(256));
-  Wire.endTransmission();
-  
-  // delay 20 milliseconds to accomodate slave onReceive() callback
-  // function. The actual time that slave takes is application dependent, but
-  // just storing the master's transmitted data does not take
-  // anywhere near 20ms.
-  delay(20);
-  
-  // read N bytes from slave
-  req_rtn = Wire.requestFrom(I2C_SLAVE_ADDR, (int)rand_byte_count);      // Request N bytes from slave
-  for (i = 0; i < req_rtn; i++)
-    in_rand[i] = Wire.read();
-
-  // compare in/out data values
-  mismatch = false;
-  for (i = 0; i < rand_byte_count; i++)
-    mismatch = mismatch || (out_rand[i] != in_rand[i]);
-
-  // increment the error counter if the number of byte variables don't match or
-  // if the data itself doesn't match
-  if (mismatch || (rand_byte_count != req_rtn)) 
-  {
-    error_count++;
-  }
-
-  // The rest of the program just displays the results to the serial port
-  
-  // display total requests so far and error count so far
-  snprintf(c_buf, sizeof(c_buf), "req: %3d,err: %3d", count, error_count);
-  Serial.println(c_buf);
-
-  // display the random byte count, the number of bytes read back, and "MATCH"/"MISMATCH"
-  snprintf(c_buf, sizeof(c_buf), "size: %2d/%2d,%s", rand_byte_count, req_rtn, rand_byte_count != req_rtn?"MISMATCH  <<--- !!!":"MATCH");
-  Serial.println(c_buf);
-  
-  // display whether the data compare matched or mismatched
-  snprintf(c_buf, sizeof(c_buf), "data: %s", mismatch?"MISMATCH  <<--- !!!":"MATCH");
-  Serial.println(c_buf);
-
-  // send up to three tx/rx bytes so that random data can be
-  // visually verified
-  if (rand_byte_count >= 1)
-  {
-    snprintf(c_buf, sizeof(c_buf), "rand[0]: %02x/%02x", out_rand[0], in_rand[0]);
-    Serial.println(c_buf);
-  }
-
-  if (rand_byte_count >= 2)
-  {
-    snprintf(c_buf, sizeof(c_buf), "rand[1]: %02x/%02x", out_rand[1], in_rand[1]);
-    Serial.println(c_buf);
-  }
-
-  if (rand_byte_count >= 3)
-  {
-    snprintf(c_buf, sizeof(c_buf), "rand[2]: %02x/%02x", out_rand[2], in_rand[2]);
-    Serial.println(c_buf);
-  }
-
-  // delay 1 second so user can watch results
-  delay(1000);
-}
diff --git a/Digital Photoreactor Controller Firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino b/Digital Photoreactor Controller Firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino
deleted file mode 100644
index ef9df86..0000000
--- a/Digital Photoreactor Controller Firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino
+++ /dev/null
@@ -1,122 +0,0 @@
-////////////////////////////////////////////////////////////////////////////////////
-// I2C test program for Digital Photoreactor Controller using TinyWireS library   //
-//                    Run this slave program on the AtTiny85.                     //      
-////////////////////////////////////////////////////////////////////////////////////
-// This test program is adapted from the TinyWireS stress test program            //
-// developed by Scott Hartog: https://github.com/rambo/TinyWire                   //
-//                                                                                //
-// The slave program receives via I2C N bytes of random data in a single          //
-// receiveEvent() callback and stores that data in a global buffer.               //
-// It then responds the first requestEvent() callback with the same data.         //
-// The requestEvent() callback overwrites the data buffer with zeros after        //
-// responding so it will only respond correctly to the first requestEvent()       //
-// callback after each receiveEvent() callback. Subsequent requestEvent()         //
-// will respond with 0xff for all data bytes.                                     //
-//                                                                                //
-//                                                                                //
-// SETUP:                                                                         //
-// AtTiny85 Pin 2 = PB3 = Blink LED                                               //
-// Attiny85 Pin 3 (PB4) = LED PWM                                                 //
-// AtTiny85 Pin 5 (PB0/SDA) = I2C SDA                                             //
-//     connect to SDA on master with external pull-up (~4.7K)                     //
-// AtTinyPin 6 (PB1) = Fan PWM                                                    //
-// AtTiny Pin 7 (PB0/SCL) = I2C SCL                                               //
-//     connect to SCL on master with external pull-up (~4.7K)                     //
-// AtTiny Pin 1 (PB5/!RST)                                                        //
-//     connect to reset on master (or just pull-up)                               //
-//                                                                                //
-////////////////////////////////////////////////////////////////////////////////////
-
-#include "TinyWireS.h"                  // wrapper class for I2C slave routines
-
-#define I2C_SLAVE_ADDR  0x26            // I2C slave address (38, 0x26), 
-
-uint8_t master_data[16];               // global buffer to store data sent from the master.
-uint8_t master_bytes;                  // global variable to number of bytes sent from the master.
-
-const int LEDPin = 4;                  //Arduino pin 4, pin 3 on AtTiny85 pinout
-const int FanPin = 1;                  //Arduino pin 1, pin 6 on AtTiny85 pinout
-const int BlinkPin = 3;                //Arduino pin 3, pin 2 on AtTiny85 pinout
-
-// Gets called when the ATtiny85 receives an I2C write slave request
-void receiveEvent(uint8_t num_bytes)
-{
-  uint8_t i;
-  
-  // save the number of bytes sent from the master
-  master_bytes = num_bytes;
-
-  // store the data from the master into the data buffer
-  for (i = 0; i < master_bytes; i++)
-    master_data[i] = TinyWireS.receive();
-
-  // set LED and Fan PWM duty to random byte values recieved from the master
-  analogWrite(FanPin, master_data[0]);
-  analogWrite(LEDPin, master_data[1]);
-
-  // blink LED whenever data is successfuly recieved
-  digitalWrite(BlinkPin, HIGH);
-  delay(10);
-  digitalWrite(BlinkPin, LOW);
-  delay(10);
-
-}
-
-// Gets called when the ATtiny receives an i2c read slave request
-void requestEvent()
-{
-  uint8_t i;
-  
-  // send the data buffer back to the master
-  for (i = 0; i < master_bytes; i++)
-    TinyWireS.send(master_data[i]);
-
-  // corrupt the byte values in the data buffer
-  // so that subsequent call won't match
-  for (i = 0; i < master_bytes; i++)
-    master_data[i] += 0x5a;
-
-  // corrupt length of the request, but dont' make it zero
-  
-  // if the usiTwiSlave.c is working fine, then this number is completely irrelevant
-  // because the requestEvent() callback will not be called again until
-  // after the next receiveEvent() callback, so the master_data and
-  // master_bytes variables will be set by that call.
-
-  // If the usiTwiSlave.c has the issue of calling the requestFrom() callback
-  // for each byte sent, the buffer will accumulate by this amount *for each byte
-  // in the original request*.
-  // 
-  // Making it zero will obscure the 1-byte send issue in the usiTwiSlave.c
-  // that is being tested.
-  // Making it small will allow a few requests to succeed before the tx buffer
-  // overflows and the usiTwiSlave.c hangs on the "while ( tmphead == txTail );"
-  // line
-  master_bytes = 2; 
-}
-
-void setup()
-{
-  // initialize the TinyWireS and usiTwiSlave libraries
-  TinyWireS.begin(I2C_SLAVE_ADDR);      // init I2C Slave mode
-
-  // register the onReceive() callback function
-  TinyWireS.onReceive(receiveEvent);
-  
-  // register the onRequest() callback function
-  TinyWireS.onRequest(requestEvent);
-
-  pinMode(LEDPin, OUTPUT);   // set pin for LED PWM
-  pinMode(FanPin, OUTPUT);   // set pin for Fan PWM
-  pinMode(BlinkPin, OUTPUT); // set pin to blink LED
-  
-  TCCR0B = TCCR0B & 0b11111000 | 0b001; // sets internal timer of AtTiny85 to 31250 Hz for fast PWM for controlling fan speed
-}
-
-void loop()
-{
-  // this needs to be here 
-  /////////////Does this really need to be here?????
-  //TinyWireS_stop_check();
-  // otherwise empty loop
-}