Fig 11. The Schematic of temperature board. Fig 12. The program on to Arduino IDE using the LM35 sensor. The next step was to make the interface in Labview, I learned to use this program and used an example that I found on the web. The goal is to read the signal from the Arduino. I used FTDI to conect Arduino to labview via RS232.
Sep 14, 2010 · A Simple ADC Example on the LaunchPad I finally have had the time to write up this post. Hopefully in a few more weeks I will have more time and can keep up a steady stream of posts like I was doing before. EI-1034 Datasheet Instruction Manual, October 16, 2008 Description The EI-1034 is a universal temperature probe that consists of a silicon type temperature sensor mounted in a waterproof stainless steel tube. It uses the highest grade available of the LM34 sensor from National Semiconductor with a typical room temperature In this example we'll show the value in degrees of the temperature using an LM35, a precision centigrade temperature sensor (LM34 for farheneit temperatures) according to the following schematic using a 16F877 (reading the datasheet of the microcontroller, we'll discover that the minimum level of Vref+ is around 2.5V). As a temperature sensor, the circuit will read the temperature of the surrounding environment and relay this temperature to us back in degrees fahrenheit. The difference between an LM34 and a LM35 temperature sensor is the LM34 sensor gives out the temperature in degrees fahrenheit, while the LM35 sensor gives out the temperature in degrees celsius.
The output of the sensor reading is also output at the LCD screen using the ports D of the PIC. The logic follow starting from LM 34 till the display is shown below. Figure 5: Logical flow from LM34 to Display The complete sensor connections are shown in figure below. Figure 6: Wiring diagram of Temperature sensor with Microprocessor and Clock The sensor can measure temperature in the range of 0 to 100°C, i.e., the output of the sensor varies from 0 to 1000 mV. The LM35 operates over the temperature range of -55° to +150°C, while the LM35C is rated for a -40°C to +110°C range (-10°C with improved accuracy). www.learningaboutelectronics.com Oct 22, 2011 · DIY Sensor for EagleTree eLogger.... Guys, what Kind of Electronics Sensor use in EagleTree eLogger for Temperature sensing ? Is it Thermistor ? or Simple Diode ? or LM34 IC's Hope some of you can post its actual sensor here. To determine the emf of a thermocouple as a function of the temperature, one junction is maintained at some constant reference temperature, such as ice-water mixture at a temperature of 0 0C. The thermal emf, which can be measured by a digital voltmeter as shown in Figure 1, is proportional to the temperature difference between the two junctions. The difference between an LM and LM34 and LM35 temperature sensors is the LM sensor gives out the temperature in degrees Kelvin, while the LM35 sensor gives out the temperature in degrees Celsius and the LM34 sensor gives out the temperature in degrees Fahrenheit. We can now write code in the processing software to give instructions to the arduino.