Kriztechblogs

Arduino IDE which may be a great starting point for Arduino lovers to familiarize themselves with the technologies surrounding the IoT.Note that when you use the NodeMCU board with the Arduino IDE ,it will write directly to the firmware, erasing the NodeMCU firmware.So if you want to back to Lua SDK,use the “flasher” to re-install the firmware.

  In this tutorial we will explore more about this interesting MCU and slowly we dive in Internet of things world by connecting NodeMCU with the Internet. Here we will use this module to get room temperature on web browser i.e. we will  make a web server to display the temperature using LM35  as temperature sensor.   Components Required: NodeMCU - ESP12 LM35 Temperature Sensor Breadboard Male-female connectors LM35 Temperature Sensor: LM35  is a analog linear temperature sensor. Its output is proportional to the temperature (in degree Celsius). The operating temperature range is from -55°C to 150°C. The output voltage varies by 10mV in response to every   o C rise or fall in temperature. It can be operated from a 5V as well as 3.3 V supply and the stand by current is less than 60uA.  Note  that LM35 is available in 3 series variations namely LM35A, LM35C and LM35D series. The main difference is in their range of temperature measurem...

Therea many IoT clouds available to store and monitor the data f0rom various sensors. With increasing popularity of IoT, more number of sensors are used every day and these sensors produce anonymous data which are useful to control other devices on the IoT network. These data can be studied further and used to modify design or improve the system performance. The Applications of Data Logging is vast and can be applied in Research Centres, Scientific Labs, Operation Theatres, Patient Monitoring System and many more.

  Arduino Uno, the most popular microcontroller among electronics hobbyists and students and its pretty easy to get started with embedded systems using Arduino But one drawback of Arduino is that it needs to be connected to the computer using USB cable to upload the code as it has done have any onboard support for wireless communication.

The current COVID-19 scenario needs no introduction. While everyone is giving their best to move forward, it is important to act responsibly and tackle this problem collectively. Today in many public places and in other gatherings, it has become common to screen individuals for body temperature, as a preventive measure to check for fever. The device that is used to do this is called a Contactless Infrared Thermometer. As many might have noticed, there is a huge surge in demand for this product, but it is not very hard to build one on your own which could not only serve its purpose but also provide more useful features than the commercial ones. So, the objective of this tutorial is to design a Low cost, Easy to build Contactless Thermometer that can measure body temperature, log them into an excel along with the picture of the individuals so that the record can be easily shared with concerned authorities. Intriguing right!! let’s get started….

Add caption With a boom in IoT field many companies started to design their operating systems exclusively for  IoT applications . Microsoft is one of the companies who already released Windows 10 IoT core and it is quiet popular among the hobbyists and industries. So, in this tutorial we will see  how to install Windows 10 IoT core in Raspberry Pi and will run a demo application .

We are in the Internet of Things (IoT) generation! These days, you can control your home gadgets/devices like air-conditioner, room heater, water heater, etc. remotely from anywhere and the device to do this can easily be built or purchased off the shelf. Over the course, we have also built a few IoT based home automation projects  using  Arduino ,  ESP , and  Raspberry Pi .

Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access the room without our permission and ensure protection against theft or loss of our important accessories and assets. There are so many types of security systems  present today but behind the scene, for authentication they all relay on fingerprint, retina scanner, iris scanner, face id, tongue scanner, RFID reader, password, pin, patterns, etc. Off all the solutions the low-cost one is to use a password or pin-based system. So, in this project, I have built an  Arduino Keypad Door Lock  which can be mounted to any of your existing doors to secure them with a digital password. Before building our password door locking project, first, we need to collect the required components and then go ahead and follow the step by step building process.

In recent years there has been an increase in smart home technology. Home automation has become the new trend. It allows us to control all our home appliances (lights, fans, thermostat, TV, security cameras) by connecting them to a common remotely controllable network making it much more accessible and convenient. And, while it brings home management to a whole new level, it also helps to maximize home security.