diff --git a/.DS_Store b/.DS_Store
index 813e27a..0c7ec6b 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/Arduino to Pi Testing/.DS_Store b/Arduino to Pi Testing/.DS_Store
index 49a5c19..66857de 100644
Binary files a/Arduino to Pi Testing/.DS_Store and b/Arduino to Pi Testing/.DS_Store differ
diff --git a/Arduino to Pi Testing/pump_primer/pump_primer.ino/pump_primer.ino.ino b/Arduino to Pi Testing/pump_primer/pump_primer.ino/pump_primer.ino.ino
new file mode 100644
index 0000000..de6f8a1
--- /dev/null
+++ b/Arduino to Pi Testing/pump_primer/pump_primer.ino/pump_primer.ino.ino	
@@ -0,0 +1,68 @@
+#include <Wire.h>
+#include <Ezo_i2c.h>
+
+// Define the pumps
+Ezo_board PMP1 = Ezo_board(56, "PMP1");  // pH up
+Ezo_board PMP2 = Ezo_board(57, "PMP2");  // pH down
+Ezo_board PMP3 = Ezo_board(58, "PMP3");  // Nutrient pump
+
+// Track the state of each pump
+bool pmp1_running = false;
+bool pmp2_running = false;
+bool pmp3_running = false;
+
+void setup() {
+  Serial.begin(9600);
+  Wire.begin();
+  Serial.println("Enter pump number (1, 2, or 3) to toggle it on/off.");
+}
+
+void loop() {
+  if (Serial.available() > 0) {
+    char command = Serial.read();
+
+    switch (command) {
+      case '1':  // Toggle PMP1
+        if (!pmp1_running) {
+          PMP1.send_cmd("d,100");   // Start PMP1 with indefinite dispensing rate
+          pmp1_running = true;
+          Serial.println("PMP1 ON");
+        } else {
+          PMP1.send_cmd("d,0");     // Stop PMP1
+          pmp1_running = false;
+          Serial.println("PMP1 OFF");
+        }
+        break;
+
+      case '2':  // Toggle PMP2
+        if (!pmp2_running) {
+          PMP2.send_cmd("d,100");   // Start PMP2 with indefinite dispensing rate
+          pmp2_running = true;
+          Serial.println("PMP2 ON");
+        } else {
+          PMP2.send_cmd("d,0");     // Stop PMP2
+          pmp2_running = false;
+          Serial.println("PMP2 OFF");
+        }
+        break;
+
+      case '3':  // Toggle PMP3
+        if (!pmp3_running) {
+          PMP3.send_cmd("d,100");   // Start PMP3 with indefinite dispensing rate
+          pmp3_running = true;
+          Serial.println("PMP3 ON");
+        } else {
+          PMP3.send_cmd("d,0");     // Stop PMP3
+          pmp3_running = false;
+          Serial.println("PMP3 OFF");
+        }
+        break;
+
+      default:
+        Serial.println("Invalid input. Enter 1, 2, or 3 to toggle a pump.");
+        break;
+    }
+  }
+
+  delay(100);  // Short delay to avoid rapid serial checks
+}
\ No newline at end of file
diff --git a/Engine/wired_to_pi/.DS_Store b/Arduino to Pi Testing/wired_to_pi/.DS_Store
similarity index 100%
rename from Engine/wired_to_pi/.DS_Store
rename to Arduino to Pi Testing/wired_to_pi/.DS_Store
diff --git a/Engine/wired_to_pi/wired_to_pi.ino b/Arduino to Pi Testing/wired_to_pi/wired_to_pi.ino
similarity index 100%
rename from Engine/wired_to_pi/wired_to_pi.ino
rename to Arduino to Pi Testing/wired_to_pi/wired_to_pi.ino
diff --git a/Arduino to Pi Testing/wired_to_pi_no_PMP3/wired_to_pi_no_PMP3/wired_to_pi_no_PMP3.ino b/Arduino to Pi Testing/wired_to_pi_no_PMP3/wired_to_pi_no_PMP3/wired_to_pi_no_PMP3.ino
new file mode 100644
index 0000000..f4c9783
--- /dev/null
+++ b/Arduino to Pi Testing/wired_to_pi_no_PMP3/wired_to_pi_no_PMP3/wired_to_pi_no_PMP3.ino	
@@ -0,0 +1,101 @@
+#include <Wire.h>
+#include <Ezo_i2c.h>
+
+// Define the sensors and pumps
+Ezo_board PH = Ezo_board(99, "PH");
+Ezo_board EC = Ezo_board(100, "EC");
+Ezo_board RTD = Ezo_board(102, "RTD");
+Ezo_board PMP1 = Ezo_board(56, "PMP1");  // pH up
+Ezo_board PMP2 = Ezo_board(57, "PMP2");  // pH down
+
+// Thresholds for pump control
+float PH_LOWER_LIMIT = 5.5;
+float PH_UPPER_LIMIT = 6.5;
+float EC_LOWER_LIMIT = 1000.0;
+float EC_UPPER_LIMIT = 2000.0;
+float PUMP_DOSE = -0.5;  // Example dose
+
+void setup() {
+  Serial.begin(9600);
+  Wire.begin();
+  Serial.println("Arduino Ready");  // Signal that Arduino is ready
+}
+
+void loop() {
+  if (Serial.available() > 0) {
+    char command = Serial.read();
+    if (command == 'R') {  // 'R' for Read sensors
+      poll_sensors();
+    }
+    else if (command == 'P') {  // 'P' for Pump control
+      control_pumps();
+    }
+  }
+  delay(100);  // Small delay for stability
+}
+
+// Function to read and print sensor values
+void poll_sensors() {
+  float ph_value = read_ph();
+  float ec_value = read_ec();
+  float temp_value = read_temp();
+
+  Serial.print("pH: "); Serial.println(ph_value);
+  Serial.print("EC: "); Serial.println(ec_value);
+  Serial.print("Temperature: "); Serial.println(temp_value);
+}
+
+// Function to control pumps based on thresholds
+void control_pumps() {
+  float ph_value = read_ph();
+
+  // pH control logic
+  if (ph_value < PH_LOWER_LIMIT) {
+    Serial.println("pH below limit. Triggering PMP1...");
+    PMP1.send_cmd_with_num("d,", PUMP_DOSE);  // Dispense pH up
+  } else if (ph_value > PH_UPPER_LIMIT) {
+    Serial.println("pH above limit. Triggering PMP2...");
+    PMP2.send_cmd_with_num("d,", PUMP_DOSE);  // Dispense pH down
+  } else {
+    Serial.println("pH is within range.");
+  }
+}
+
+// Function to read pH value
+float read_ph() {
+  char sensordata_buffer[32];
+  PH.send_read_cmd();
+  delay(1000);  // Wait for sensor response
+  if (PH.receive_cmd(sensordata_buffer, sizeof(sensordata_buffer)) == Ezo_board::SUCCESS) {
+    return String(sensordata_buffer).toFloat();
+  } else {
+    Serial.println("Error reading pH sensor.");
+    return -1;
+  }
+}
+
+// Function to read EC value
+float read_ec() {
+  char sensordata_buffer[32];
+  EC.send_read_cmd();
+  delay(1000);
+  if (EC.receive_cmd(sensordata_buffer, sizeof(sensordata_buffer)) == Ezo_board::SUCCESS) {
+    return String(sensordata_buffer).toFloat();
+  } else {
+    Serial.println("Error reading EC sensor.");
+    return -1;
+  }
+}
+
+// Function to read Temperature value
+float read_temp() {
+  char sensordata_buffer[32];
+  RTD.send_read_cmd();
+  delay(1000);
+  if (RTD.receive_cmd(sensordata_buffer, sizeof(sensordata_buffer)) == Ezo_board::SUCCESS) {
+    return String(sensordata_buffer).toFloat();
+  } else {
+    Serial.println("Error reading Temperature sensor.");
+    return -1;
+  }
+}
\ No newline at end of file
diff --git a/Engine/.DS_Store b/Engine/.DS_Store
index e0d30ac..6fde80e 100644
Binary files a/Engine/.DS_Store and b/Engine/.DS_Store differ
diff --git a/Engine/wired_to_pi_v5/.DS_Store b/Engine/wired_to_pi_v5/.DS_Store
new file mode 100644
index 0000000..8abf525
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