adjusting lab 3 library

examples/Lab3-SD/Lab3-SD.ino

@@ -7,37 +7,35 @@
 // CS   - pin 10
 const int chipSelect = 10;
 
-// This is the pin your first TMP36 is connected to.
-// Change this as needed.
+// ############### START EDITING HERE (1/3) ###############
+// Adjust the following pins according to your setup
+
+// Pin for first TMP36
 const int tmp1Pin = A0;
 
-// This is the pin your second TMP36 is connected to.
-// Change this as needed.
+// Pin for second TMP36
 const int tmp2Pin = A1;
 
-// This is the pin your voltage divider is connected to.
-// Change this as needed.
+// Pin for voltage divider
 const int vDivPin = A2;
 
-// This is the pin your pressure sensor is connected to.
-// Change this as needed.
+// Pin for pressure sensor
 const int pressPin = A3;
 
-// This is the pin your humidity sensor is connected to.
-// Change this as needed.
+// Pin for humidity sensor
 const int humidPin = A4;
 
-// These are the pins your accelerometer is connected to (x, y, and z axes)
-// Change these as needed.
+// Pins for accelerometer
 const int accelxPin = A5;
 const int accelyPin = A6;
 const int accelzPin = A7;
 
+// ############### END EDITING HERE (1/3) ###############
+
 // For future labs, you may find it helpful to copy the above settings for additional sensors.
 // **HINT HINT WINK WINK**
 
 // This is the string that goes at the top of your csv file. It is the column headers for your spreadsheet.
-// You can change this as needed.
 const String header = "Time (ms),TMP36_1 (Raw),TMP36_2 (Raw),Voltage (Raw),Pressure (raw),Humidity (raw),Accel_x (raw),Accel_y (raw),Accel_z (raw)";
 
 #include <SPI.h>
@@ -73,14 +71,22 @@ void loop() {
 
     // Note: in future labs, you may need to change this to add additional sensors.
 
-    int tmp1Val = analogRead(tmp1Pin); // First temperature reading (raw)
-    int tmp2Val = analogRead(tmp2Pin); // Second temperature reading (raw)
-    int vDivVal = analogRead(vDivPin); // Battery voltage reading (####THIS IS FROM VOLTAGE DIVIDER, ADJUST ACCORDINGLY####)
-    int pressVal = analogRead(pressPin); // Pressure reading (raw)
-    int humidVal = analogRead(humidPin); // Humidity reading (raw)
-    int accelxVal = analogRead(accelxPin); // X-Acceleration reading (raw)
-    int accelyVal = analogRead(accelyPin); // Y-Acceleration reading (raw)
-    int accelzVal = analogRead(accelzPin); // Z-Acceleration reading (raw)
+    double tmp1Val = analogRead(tmp1Pin); // First temperature reading (raw)
+    double tmp2Val = analogRead(tmp2Pin); // Second temperature reading (raw)
+
+    // ############### START EDITING HERE (2/3) ###############
+
+    double vDivVal = analogRead(vDivPin); // Battery voltage reading (THIS IS FROM VOLTAGE DIVIDER)
+
+    double vDivAdj = ???; // What should this line be to make the vDivAdj accurately reflect the battery voltage?
+
+    // ############### END EDITING HERE (2/3) ###############
+
+    double pressVal = analogRead(pressPin); // Pressure reading (raw)
+    double humidVal = analogRead(humidPin); // Humidity reading (raw)
+    double accelxVal = analogRead(accelxPin); // X-Acceleration reading (raw)
+    double accelyVal = analogRead(accelyPin); // Y-Acceleration reading (raw)
+    double accelzVal = analogRead(accelzPin); // Z-Acceleration reading (raw)
 
     // Now let's make a nice string to write to the file.
     // This is a comma-separated value (csv) file, so we need to separate each value with a comma.
@@ -94,8 +100,8 @@ void loop() {
     // add the second raw TMP36 value
     dataString += String(tmp2Val);
     dataString += ",";
-    // add the raw voltage divider value
-    dataString += String(vDivVal);
+    // add the adjusted voltage divider value
+    dataString += String(vDivValAdj);
     dataString += ",";
     // add the raw pressure value
     dataString += String(pressVal);
@@ -119,8 +125,12 @@ void loop() {
         dataFile.println(dataString);
         dataFile.close();
 
+        // ############### START EDITING HERE (3/3) ###############
+
         // if you want to print to the serial port as well, uncomment the following line...
         // Serial.println(dataString);
+
+        // ############### END EDITING HERE (3/3) ###############
     }
     // if the file isn't open, pop up an error:
     else {