[REAL] Temp/pH sensor test code, with instructions

24Jan2026_Research_Temp-pH-Merged2.ino

@@ -0,0 +1,83 @@
+//Here's what you need to know. Put 5V to 5V, probably on a bredboard. It's easier if you have them all connected. 
+//Connect the I2C connector, which is the one for the temp sensor. Plug in 5V, ground, and then SCL and SDA to their pins, on the digital side.
+//Plug in the A on the pH board to the A0 pin.
+//Take the 9V battery and attach the node, and plug into the arduino.
+
+//Done with the wiring! Very easy
+
+
+#include <Wire.h>
+#include "TSYS01.h"
+#ifdef USE_PULSE_OUT
+  #include "ph_iso_surveyor.h"       
+  Surveyor_pH_Isolated pH = Surveyor_pH_Isolated(A0);         
+#else
+  #include "ph_surveyor.h"             
+  Surveyor_pH pH = Surveyor_pH(A0);   
+#endif
+
+TSYS01 sensor;
+
+uint8_t user_bytes_received = 0;                
+const uint8_t bufferlen = 32;                   
+char user_data[bufferlen];                     
+
+void parse_cmd(char* string) {                   
+  strupr(string);                                
+  if (strcmp(string, "CAL,7") == 0) {       
+    pH.cal_mid();                                
+    Serial.println("MID CALIBRATED");
+  }
+  else if (strcmp(string, "CAL,4") == 0) {            
+    pH.cal_low();                                
+    Serial.println("LOW CALIBRATED");
+  }
+  else if (strcmp(string, "CAL,10") == 0) {      
+    pH.cal_high();                               
+    Serial.println("HIGH CALIBRATED");
+  }
+  else if (strcmp(string, "CAL,CLEAR") == 0) { 
+    pH.cal_clear();                              
+    Serial.println("CALIBRATION CLEARED");
+  }
+}
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Starting");                            
+  delay(200);
+
+  Wire.begin();
+
+  while (!sensor.init()) {
+        Serial.println("TSYS01 device failed to initialize!");
+        delay(2000);
+  }
+  Serial.println(F("Use commands \"CAL,7\", \"CAL,4\", and \"CAL,10\" to calibrate the circuit to those respective values"));
+  Serial.println(F("Use command \"CAL,CLEAR\" to clear the calibration"));
+  if (pH.begin()) {                                     
+    Serial.println("Loaded EEPROM");
+  }
+}
+
+void loop() {
+  if (Serial.available() > 0) {                                                      
+    user_bytes_received = Serial.readBytesUntil(13, user_data, sizeof(user_data));   
+  }
+
+  if (user_bytes_received) {                                                      
+    parse_cmd(user_data);                                                          
+    user_bytes_received = 0;                                                        
+    memset(user_data, 0, sizeof(user_data)); //This is for the pH sensor                                         
+  }
+
+  sensor.read();
+  Serial.print("Temperature:  ");
+  Serial.print(sensor.temperature()); 
+  Serial.println(" C");  //Temp sensor
+
+  Serial.print("pH:           ");
+  Serial.println(pH.read_ph()); //pH Sensor                                                 
+  delay(500);
+
+}