This simple circuit will act as a warning alarm whenever the temperature of a device exceeds above the safety level.  This circuit can be used to monitor the heat built inside the devices like your PC, inverters, CD player etc. As excessive heat may affect the sensitive component and may lead to permanent damage. The main advantage of this circuit is its compactness that’s why it can be easily install in the device itself. This circuit will also give you power on indicator of a device with the help of blinking LED. Therefore it attract your attention that device is on. This circuit uses a negative temperature coefficient (NTC) as a sensor to sense the heat. This circuit can be operated on wide range of temperature vary from 5V to 12V. 

The robot is operated through PC using wireless technology using zigbee and using wireless camera we can view both audio and video on the TV. This robot has a high power LED which acts as a light source when light intensity inside the pipe is low .It is a low cost robot used to monitor the changes of different parameters in the industrial pipes. By connecting temperature sensor to the robot we can get the temperature of dangerous zones in PC itself. By connecting smoke sensor to the robot we can get the information related concentration of smoke or gases in respective fields.

Turbidity is the quantitative measure of suspended particles in a fluid. It can be soil in water or chocolate flakes in your favorite milk shake. While chocolate is something we soo want in our drinks, soil particles are totally undesired. Keeping aside the potable purposes, there are several industrial and household solutions that make use of water in some or other manner – for instance, a car uses water to clean the windshield, a power plant needs it to cool the reactors, washing machines and dish washers depend on water like fish. Now the question arises here: how do these machines get to know about the turbidity? We are blessed with nature’s evolutionary gift of senses to find out soil in the water, but what about your washing machines? No eyes to see, to tongue to taste, no skin to feel but just a plastic body with some buttons and motor inside. How does it so smart to work as per soil suspension???  Let’s find out in this Insight of a General Electric’s Turbidity Sensor. Interestingly, this sensor model has an additional feature to sense temperature changes. Let’s find that out too!!