http://www.arduino.cc/playground/Main/CapSense
Thermometer Sensor + Arduino
http://pscmpf.blogspot.com/2008/12/arduino-lm35-sensor.html
http://forums.ladyada.net/viewtopic.php?t=5763
訂閱：
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About Me
- Scottie Chih- Chieh Huang
- Taipei, Taiwan
- Scottie Huang is a PhD student in the department of Architecture at the National Taiwan University of Science and Technology. He is working with Prof. Shen-Guan Shih and Sheng-Fen Chien as part of his thesis work. Huang is interested in design artifacts, which can enhance Architecture and everyday living. His works explore tangible human-computer interfaces, assistive conceptual design tools, smart house design, movable structures, and stage design. He received a MS degree in digital media at the Institute of Architecture at the National Chaio-Tung University and a BS degree in Architectural Design at the National Taipei University of Technology.
Research & Development
smart tiles
kinetic art work
Sensitive Planet project
Paper Writing
3D sketch project
1 則留言:
/* Analog Read of LM35 temperature sensor
* --------------------------------------
*
* The Analog to Digital Converter (ADC) converts analog values into a digital approximation
* based on the formula ADC Value = sample * 1024 / reference voltage (+5v). So with a +5 volt
* reference, the digital approximation will = input voltage * 205. (Ex. 2.5v * 205 = 512.5)
*
* The LM35 is a precision linear temperature sensor that supplies 10mv per degree Celsius.
* This means at 15 degrees Celsius, it would produce a reading of .150v or 150 millivolts.
* Putting this value into our ADC conversion ( .15v * 205 = 30.75) we can get a close
* approximation of the Celsius temperature by dividing the digital input count by 2.
*
* If the LM35 were supplied by a different reference voltage (9v or 12v) we would have
* to use a different conversion method. For this circuit, dividing by 2 works well.
*
* The LM25 has three legs and looks like a transistor. The two outside legs are
* +5v and Ground, and the middle leg develops the sample voltage.
* LM35 Sources: BGmicro.com and Jameco.com Search term: LM35 Approx $1.75
*
* /|---> Gnd 18K ohm
* | |-----------+---/\/\/\/-----> Gnd
* \|---> +5v |
* +----------- Analog Input pin 5
*
*/
int inPin = 5; // select the input pin for analog temp value
int inVal; // integer value for input read from sensor
int delayVal = 1000; // delay value to read once a second
void setup() {
Serial.begin(9600); // set up Serial library at 9600 bps
}
void loop() {
inVal = analogRead(inPin); // read the value from the sensor
inVal /= 2; // convert 1024 steps into value referenced to +5 volts
Serial.print(inVal); // print input value
Serial.print(" Celsius, "); // print Celsius label
Serial.print((inVal * 9)/ 5 + 32); // convert Celsius to Fahrenheit
Serial.println(" Fahrenheit"); // print Fahrenheit label
delay(delayVal); // delay the program for the requested time
}
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