1. waterproofing a thermistor ENGR 121 living with the lab © 2013 David Hall

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3. solder leads onto thermistor living with the lab 36 inches of 22 gauge solid core wire10 kΩ thermistor www.digikey.comwww.digikey.com part #: 317-1258ND

4. install heat shrink tubing over solder joints living with the lab 1/16” flexible heat shrink tubing 2 pieces 1-inch long www.digikey.comwww.digikey.com part #: Q2F116B-1000-ND twist the wire with a drill to help keep wiring neat

5. waterproof thermistor with heat shrink living with the lab 1/8” flexible heat shrink tubing 1 piece 6-inches long www.digikey.comwww.digikey.com part #: Q2F018B-500-ND allow heat shrink to extend about ½ inch beyond end of thermistor

6. waterproof thermistor with heat shrink living with the lab apply heat and then mash the hot end with pliers or with a vise to seal (be careful... hot heat shrink can burn you)

7. thermistor circuit and program living with the lab int val = 0; // variable to store circuit output void setup() { Serial.begin(9600); // set up the serial display } void loop() { val = analogRead(4); // read the 0 to 1023 integer from analog pin 4 Serial.println(val); // print value to serial monitor } 5V analog input 4 (measures voltage across thermistor) 10kΩ thermistor