Annex B - Data from research

The way to connect the jumper wires:

1) LCD RS pin to digital pin 12
2) LCD Enable pin to digital pin 11
3) LCD D4 pin to digital pin 5
4) LCD D5 pin to digital pin 4
5) LCD D6 pin to digital pin 3
6) LCD D7 pin to digital pin 2
7) LCD R/W pin to ground
8) 10K resistor:
9) ends to +5V and ground
10)wiper to LCD VO pin (pin 3)

We used this to help us in our wiring.

/ include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
 // set up the LCD's number of columns and rows:
 lcd.begin(16, 2);
 // Print a message to the LCD.
 lcd.print("hello, world!");
}

void loop() {
 // set the cursor to column 0, line 1
 // (note: line 1 is the second row, since counting begins with 0):
 lcd.setCursor(0, 1);
 // print the number of seconds since reset:
 lcd.print(millis()/1000);

Number of Tests	4	7	10
1	pH 4.18	pH 7.15	pH 10.08
2	pH 4.14	pH 7.18	pH 10.1
3	pH 4.13	pH 7.21	pH 10.08
4	pH 4.13	pH 7.18	pH 10.09
5	pH 4.13	pH 7.18	pH 10.06
Average	pH 4.13	pH 7.18	pH 10.08

SST Lab Sensor:

Number of Tests	4	7	10
1	pH 4.17	pH 6.98	pH 10.03
2	pH 4.14	pH 7	pH 9.99
3	pH 4.14	pH 7.02	pH 9.95
4	pH 4.15	pH	pH
5	pH 4.15	pH	pH
Average	pH 4.15	pH 7	pH 9.99