The TMP35, TMP36, and TMP37 are low voltage, precision centigrade temperature sensors. They provide a voltage output that is linearly proportional to the Celsius (Centigrade) temperature.
The TMP35/TMP36/TMP37 do not require any external calibration to provide typical accuracies of ±1°C at +25°C and ±2°C over the –40°C to +125°C temperature range
The low output impedance of the TMP35/TMP36/TMP37 and its linear output and precise calibration simplify interfacing to temperature control circuitry and A/D converters. All three devices are intended for single-supply operation from 2.7 V to 5.5 V maximum.
Features:
- Low Voltage Operation (+2.7 V to+5.5 V)
- Calibrated Directly in °C
- 10 mV/8°C Scale Factor (20 mV/8°C on TMP37)
- ±2°C Accuracy OverTemperature
- ±0.5°C Linearity
- Specified -40 °C to +125 °C, Operation to +150 °C
- Less than 50 µA Quiescent Current
- Shutdown Current 0.5 µA max
Schematics
The TMP36 is very easy to connect to your Chipkit, here is a breadboard layout
Code
[codesyntax lang=”cpp”]
int sensorPin = 0;
void setup()
{
Serial.begin(9600);
}
void loop()
{
int reading = analogRead(sensorPin);
// measure the 3.3v with a meter for an accurate value
//In particular if your Arduino is USB powered
float voltage = reading * 3.3;
voltage /= 1024.0;
// now print out the temperature
float temperatureC = (voltage - 0.5) * 100;
Serial.print(temperatureC);
Serial.println(" degrees C");
delay(1000);
}
[/codesyntax]
Testing
Open the serial monitor
22.67 degrees C
23.12 degrees C
24.50 degrees C
25.87 degrees C
26.78 degrees C
26.32 degrees C
26.32 degrees C
25.87 degrees C
25.41 degrees C
Link
5pcs/lot TMP36 TMP36GT9Z Low Voltage Precision Celsius temperature sensor
