a few of my favorite sensors

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accelerometer Sparkfun SEN-09269 $14.95 retail ADXL335 accelerometer 3-axis ±3g power using 3.3V supply analog output of acceleration DATA SHEET: https://www.sparkfun.com/datasheets/Components/SMD/adxl335.pdf

Cantherm MF52 series thermistor void setup() { Serial.begin(9600); } void loop() { int t=analogRead(3); // read temperature Serial.println(t); // print temperature } Cantherm MF52 series thermistor digikey part #: 317-1258-ND resistance = 10kΩ at 25˚C 10kΩ 5V analog pin 3 (measures voltage across 10kΩ resistor) variation of 0 to 1023 analog value with temperature as temperature increases, the electrical resistance of the thermistor decreases this causes a decrease in voltage across the thermistor this causes an increase in voltage across the 10kΩ resistor this causes the 0 to 1023 output of the analog pin to increase with increasing temperature

photoresistor resistance changes with light level cost $0.89 void setup() { Serial.begin(9600); } void loop() { int p=analogRead(4); // read light level Serial.println(p); // print light level } photoresistor resistance changes with light level cost $0.89 Luna Optoelectronics PDV-P8103 16-33kohm 5V analog input 4 photoresistor 10kW