DHT is a combined pack of temperature and humidity sensors. These sensors are ideal for hobbyists who just want to do some data logging. DHT11 sensors are slow in terms of retrieving data. As it is a combined pack, it contains a resistive thermal sensor (a thermistor) and capacitive humidity sensor. A thermistor changes its resistance value depending on the changes in temperature. Technically, all resistors act as thermistors because they dissipate heat when the current is passed through them and are responsible for power losses. However, a resistor's characteristic is that when they are heated up from the external source, the resistance values changes a little bit, which is not so effective to be measured. But this is not the case with the thermistor; its resistance values change in terms of several hundred ohms when there is a slight change in the ambient temperature. A DHT11 temperature sensor provides accuracy near to 2 degree Celsius in the...
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Rushi Gajjar is an entrepreneur, embedded systems hardware developer and a lifetime electronics enthusiast. He works in the field of research and development of high-speed single-board embedded computers and wireless sensor nodes for the Internet of Things. Prior to that, his extensive work as a freelancer in the domain of electronics hardware design introduced him to rapid prototyping development boards and single board embedded computers such as the Raspberry Pi. In the spare time, he loves to develop the projects on Raspberry Pi including sensors, imaging, data logging, web-servers, and machine learning automation systems. He authored a DIY and hardware based book titled Raspberry Pi Sensors which takes deep dive in developing sensor interfacing based projects with Raspberry Pi. His vision encompasses connecting every entity in world to the Internet for enhancing the human living experience. https://www.linkedin.com/in/rushigajjarhttp://www.amazon.com/Raspberry-Pi-Sensors-Rushi-Gajjar/dp/1784393614/ref=sr_1_9?ie=UTF8&qid=1453884207&sr=8-9&keywords=raspberry+Pi+Sensorshttp://rushigajjar.blogspot.in/
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Rushi Gajjar is an entrepreneur, embedded systems hardware developer and a lifetime electronics enthusiast. He works in the field of research and development of high-speed single-board embedded computers and wireless sensor nodes for the Internet of Things. Prior to that, his extensive work as a freelancer in the domain of electronics hardware design introduced him to rapid prototyping development boards and single board embedded computers such as the Raspberry Pi. In the spare time, he loves to develop the projects on Raspberry Pi including sensors, imaging, data logging, web-servers, and machine learning automation systems. He authored a DIY and hardware based book titled Raspberry Pi Sensors which takes deep dive in developing sensor interfacing based projects with Raspberry Pi. His vision encompasses connecting every entity in world to the Internet for enhancing the human living experience. https://www.linkedin.com/in/rushigajjarhttp://www.amazon.com/Raspberry-Pi-Sensors-Rushi-Gajjar/dp/1784393614/ref=sr_1_9?ie=UTF8&qid=1453884207&sr=8-9&keywords=raspberry+Pi+Sensorshttp://rushigajjar.blogspot.in/
Read more about Rushi Gajjar