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A thermocouple datalogger based on the Arduino platform & (previously, rolling your own thermocouples )… It never hurts to collect more data, and I often find myself wanting to record temperatures from a few extra animals. Most (all?) commercial thermocouple dataloggers that will record temperatures from multiple thermocouples cost several hundred or thousands of dollars. I set out to put together a relatively cheap 8-channel thermocouple datalogger based on the open-source Arduino development platform. Thermocouple Type-K Glass Braid Insulated – K .
Here is an easy way to implement automatic temperature control for your next project. The web site includes the schematic, parts list, PCB artwork, and application examples. The heart of the circuit is the LM35DZ temperature sensor which is factory-calibrated in the Celsius (or Centigrade) scale with a linear Degree->Volt conversion function. The output voltage (at pin 2) changes linearly with temperature from 0V (0oC) to 1000mV (100oC). Like this:
This wireless temperature sensor project uses an XBee , breakout board, and simple power supply to transmit temperature data to an Arduino base station. This looks like it could be easily expanded into a whole house monitoring system. [via Arduino.cc ] I decided to explore the more advanced features of XBee radios by building a remote temperature sensor.
The LM75B is a temperature-to-digital converter using an on-chip band gap temperature sensor and Sigma-Delta A-to-D conversion technique with an over-temperature detection output. The LM75B contains a number of data registers: configuration register (Conf) to store the device settings such as device operation mode, OS operation mode, OS polarity and OS fault queue; temperature register (Temp) to store the digital temp reading; and set-point registers (Tos and Thyst) to store programmable over-temperature shutdown and hysteresis limits that can be communicated by a controller via the 2-wire serial I2C-bus interface. The device also includes an open-drain output (OS), which becomes active when the temperature exceeds the programmed limits.
<img src="http://makezineblog.files.wordpress.com/2009/03/ardthermo_cc.jpg?w=600&h=258" width="600" height="258" alt="ardthermo_cc.jpg" /> Using an Arduino, thermistor, and a bit of software, Peter built a temperature sensor capable of reporting readings via Gmail, or even speech - After recently getting my hands on an Arduino Duemilanove, I came across this Sketch on Arduino Playground that allowed an Arduino to function as a temperature measuring device with the addition of a few cheap and easily obtainable components. Deciding to take things a step further, I wrote a Python script to create a DIY temperature measuring device that could be used both locally, via the command line, as well as remotely, using a googlemail account to check the temperature of a room.