Arduino alone cannot drive the IGBT because it requires more voltage then the arduino output voltage. The systems work on the benefits of using temperature adjustable and fan temperature control systems. The project is working on the concept of IOT. So, if we use default arduino reference then it give accuracy of about 0.50C. One fly back diode is connected across DC fan in order protect the circuit from transient volt produced in inductor. Exposure of thin film structures fabricated by electrodepositing n type Cu2O thin films for 45 min, sulphided and passivated for 5 s and maintained at a sensing temperature of 45 oC to LP gas with a flow rate of 2.5 ml/min recorded the highest sensitivity of 48 %. For sensing the temperature LM 35 has been used. From datasheet of LM35, 10mV change in per degree Celsius. In previous project “Temperature Controlled Fan using Arduino” we had used a transistor in order to drive DC fan. can drive high power high voltage DC fan. LM35 sensor as a fan switch with indoor temperature input, when the room temperature is getting higher then the speed of the fan is also getting higher, and vice versa. Working of Automatic Fan. Hardware implementation of the proposed concept The above figure 6 depicts the hardware implementation of the proposed concept. In this Arduino based project, we are going to control DC fan speed according to the room temperature and show these parameter changes on a 16x2 LCD display. In this circuit, PIN 3 (non-inverting terminal of op amp 741) is connected with the potentiometer and PIN 2 (inverting terminal) is connected in between of R2 and RT1 (thermistor) which is making a voltage divider circuit. Check out the video on “Tutorial on Interfacing 16×2 LCD to Arduino”. After having set the water temperature, at constant flow rate, at either a thermoneutral or a preferred level, subjects were asked to detect thermal changes or to report their thermosensory and affective judgments associated with water, We report a novel mechanism to effectively detect LP gas based on surface modification through sulphidation followed by passivation of electrodeposited n-type cuprous oxide (Cu2O), forming a thin film nCu2O/p-CuxS semiconducting heterostructure. In this circuit, the temperature sensor used is an NTC thermistor, i.e. Automatic temperature controlled fan leverages the power of Arduino to provide an automation control system of fan which speed is controlled by measuring temperature by itself. Arduino have inbuilt 10-bit ADC i.e. Access scientific knowledge from anywhere. Automatic fan speed control according to temperature. This software can be used with any Arduino board. If you are using CPU fan or SMPS fan which is used in desktop PC then use 12 Volt power supply and remove 10 Ohm resistance, instead directly connected to positive rail. LM35 is a temperature sensor which sense temperature and generate voltage according to temperature According to datasheet of LM35 it produces 10mV per degree change in temperature. The automatic fans will change their speed according to the temperature in the room. The sensed and set values of the temperature are displayed on the 16x2-line LCD. 3470Design, Modeling and Simulation of a This automatic processing is done through an Arduino and a temperature sensor IC LM35. Temperature and speed are displayed over LCD. Program is simple and straight forward, it basically check the temperature and compare between two temperature range (25 0 C to 60 0 C). Set T=0,fan Speed=0 … So it can save and streamline the work that is usually done manually which could then work These systems are either one time programmable or need analog adjustment which is not accurate and more difficult to use. In this task, 01 LDR sensor, 12 LEDs, 13 resistors, 03 IR obstacle detector sensors and 01 Arduino UNO have been used. 7 shows the circuit design of automatic street light control system based on vehicle detection using Arduino Uno having feature of Dim light capability. The purpose of making a final project entitled Automatic Fan Control System Based with Thermistor For Temperature Controller is to allow users to adjust the fan speed automatically. More recent, real time based temperature control using Arduino was published. The console displays text output by the Arduino environment including complete error messages and other information. Circuit diagram of the Temperature Based Fan Speed Control & Monitoring With Arduino & LM35 is shown above. Control Circuit and Load circuit is isolated using opto-isolator 4N35 i.e. 7, July 2015 Copyright to IJIRSET.Design and As expected, the thin film structures obtained through sulphidation followed by passivation of n-type Cu2O films decreased the resistance (100 kΩ) in comparison to the resistance (1 MΩ) of the unsulphided n-type Cu2O thin films. As there are some limitation of using transistor like low output current, low output voltage etc.