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(DHT11)TEMPERATURE AND HUMIDITY GRAPH PLOTTINGWITH THE HELP OF MICROCONTROLLER NODEMCU(HAVING INBUILT WIFI)

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In this post, i will try to make you understand the way by which DHT 11 is interfaced with Node MCU(inbuilt ESP8266 ).   The  DHT11  basically is a digital temperature and humidity sensor. It uses a humidity sensor and a thermo resistor to calculate the surrounding air temperature and sends a  digital signal on the digital pin. NODEMCU DHT11 sensor Particulars required. ........... DHT 11 SENSOR  Three male to female jumber cables NODEMCU  NOW COMING TO THE CONNECTIONS  WE CONNECT THE GROUND OF THE SENSOR TO THE GND PIN OF THE NODEMCU AND VCC OF THE SENSOR TO THE 3.3V OF THE NODEMCU.AND THE OUTPUT PIN TO ANY OF THE INPUT DIGITAL PINS OF THE  NODEMCU. HERE I HAVE CONNECTED WITH D4.  And connect the nodemcu to your pc or laptop for uploading the program.  Now you need to create an account at thingspeak. And create a new channel at your account and note the write api key to be put in the coding section....
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Building a Wifi controlled bot using Nodemcu and l293d motor driver ic

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For this project we need a l293d motor driver ic, a breadboard, some jumper cables,nodemcu(esp8266),a five volt power supply(or i can just use arduino for the 5v power supply as that 5v is not present on nodemcu),a 9v supply to run the motor.                                                                               L293D                                                               CHASIS FOR THE BOT                                                              NODEMCU(ESP8266)...
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Blinking led using arduino.

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NOW IN THIS POST I AM GOING TO DISCUSS ABOUT A BASIC PROGRAM OF BLINKING   A LED USING ARDUINO                                                                   We will complete the project in two part hardware part and programming part. (i) Hardware part; -for the hardware part the things that are needed are                                     (a)arduino board                                     (b)breadboard                                     (c)resistor and led                   ...
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Bascis of Arduino and its description.

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                            .          ARDUINO    It is a microcontroller which can control both analog and digital signal according the program uploaded in it. The boards are equipped with  sets of digital and analog  input/output  (I/O) pins that may be interfaced to various expansion boards or  breadboards.Basically you could send your desired signal to the desired location.We can connect several input devices like sensors,touchpad,keypad etc. with other input devices like display,speaker,motors,led etc. Several types of arduino are available in the market like:- (i)Arduino UNO R3 (ii)Arduino lilypad (iii)Arduino Mega (iv)Arduino Robot (v)Arduino UNO R2 etc. Discussing about Arduino UNO R3 , It is a microconroller .It has 14 digital pins(0-13) followed by a GND(ground) and 6 analog pins(A0-A5) followed by two GND and one 5V and one 3.3V and Vin. The...
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INTRODUCTION TO IOT AND EMBEDDED SYSTEMS

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                                          INTERNET OF THINGS                                      AND                      EMBEDDED SYSTEMS MAINLY OUR TOPIC CAN WHOLLY BE DIVIDED INTO TWO PARTS.1st PART IS THE EMBEDDED SYSTEMS AND THE SECOND ONE IS ABOUT THE INTERNET OF THINGS. 1. Embedded means something that is attached to another thing. An embedded system can be thought of as a computer hardware system having software embedded in it. An embedded system can be an independent system or it can be a part of a large system. Embedded processors can be broken into two broad categories. Ordinary microprocessors (μP) use separate integrated circuits for memory and peripherals. Microcontrollers (μC) have on-chip peripherals, thus reduci...
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