All posts in the 'temperature control' Category

Wireless Spa Temperature Sensing System

Posted on 13 Sep 2009

Wireless Spa Temperature Sensing SystemWireless Spa Temperature Sensing System
The purpose of this project was to design and implement a reliable and cost effective wireless temperature sensing system for the recreational spa industry. This wireless product has potential applications in many other areas including, salmonid enhancement hatcheries, private/public tubs, and indoor/outdoor pools.[more]

Posted in : temperature control

A Simple Arduino LCD Thermometer

Posted on 06 Apr 2009

A Simple Arduino LCD Thermometer
This is really very simple Arduino project. The LM35DZ has three pins, +5V, ground and a variable voltage output to indicate the temperature.Arduino plugged it into breadboard and wired the output straight to the Arduino’s analogue input 0.The display is used in this project is a Displaytech 162B which is a HD44780 LCD controller compatible device.[more]

Posted in : Arduino projects | temperature control

Electronic Temperature-Controlled Relay

Posted on 10 Oct 2008

Electronic Temperature-Controlled Relay
The heart of the circuit is the LM35 temperature sensor which is factory-calibrated in the Celsius (or Centigrade) scale with a linear Degree->Volt conversion function. The output voltage changes with temperature from 550mV (-55oC) to 1500mV (150oC). This greatly simplifies the thermostat designed only need to provide a precision voltage reference (TL431) and an accurate comparator (A1 of LM358) in order to construct a complete thermostat.[more]


Posted in : temperature control