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ESP8266 wifi Based Home Automation

                                   Introduction Hey there in this session we will discuss about home automation i.e. IOT so we are using ESP8266-12F or Nodemcu and in software portion we will use blynk IOT to control all things over internet from one point to any point in the world. Components ESP8266-12F/12E or Nodemcu board  USB to TTL converter(if you don't use nodemcu or any development board) Breadboard 100R*5 resistors LEDs Circuit So this is minimum circuit requires to work properly and while esp8266 is connect with wifi it consumes minimum of 150mA so make sure you have used 3.3v regulator to work properly, as I have used AMS1117 3.3v regulator which is enough to power the esp8266. To program esp8266 you need any USB to TTL converter like CH340 or FDTI and wire connections are as follows                           ...

LM555 IC PWM Motor speed Controller

Introduction Hey everyone in this session we will discuss about working of PWM based motor speed controller, LED brightness controller. Components Required 1)LM555 IC 2)IRFZ44N or any N-Channel Mosfet 3)1N4148*2 4)1N5819*1 5)10nF, 100uF*1, 470uF*1 6)200K VR 7)330R, 1K, 2.2K, 10K 8)LED*1 9)LM7812 Regulator IC 10)100uF Inductor Working For controlling motor speed or LED brightness we generally use linear regulator which is simple in making but they don't have better efficiency as compared to PWM based controller so for that reason I made PWM controller with the help of very famous IC LM555, which is used in astable multivibrator mode. For controlling output we need to control the on time and off time of the switching mosfet it means we need to adjust duty cycle from 0% to 100% so that we can get desired voltage at the output. Here we see a inductor which is used to smooth the output. Testing  For the load testing we use 12v motor and 4v high power led. Circuit

150W 12v to 300v Inverter

Introduction Hey everyone in this topic we will discuss about inverter and working circuit with load test and efficiency. Components So lets take look at components we need to make this circuit - 1. SG/KA3525 IC 2. IRFZ44N N-Channel Mosfet 3. ATX PSU ferrite core transformer 4. 4700uF capacitor 5. Variable resistor - 10K*4, 500K*1 6. 16-pin IC Base 7. Capacitors - 1nF*2, 100nF*4) 8. Resistors - 100R*1, 1K*10, 5.6K*1, 10K*6, 100K*1 9. LED*1 Working First we have to look on the main part which is controller circuit based on KA3525 IC having feedback to control output voltage or auto voltage correction which is done by PC817 optocoupler for isolation from high voltage to low voltage side. The main component, transformer which is taken from old computer power supply and for winding of primary and secondary there's no complicated calculation is required because for step up transformer like inverter make total of 8T with 0.6mm wire of 5 layers in secondary with (4T + 4T) centered tap, an...

SG/KA3525 PWM Controller

Introduction Hey everyone in this session we learn how to use KA/SG3525 IC to make PWM controller circuit having feedback, low voltage and over heating protection. Components So lets take look at components we need to make this circuit - 1.SG/KA3525 IC 2.LM358 IC 3.LM555 IC 4.10K NTC 5.Variable resistor - 10K*4, 500K*1 6.16-pin, 8-pin IC Base 7.Capacitors - 1nF*2, 100nF*4, 2.2uF*1) 8.Resistors - 100R*1, 220R*2, 1K*10, 5.6K*1, 10K*6, 15K*2, 100K*1 9.BC547*1 10.LED*2 11.Push Button*1 12.Zero PCB Working                                                                                                                            In this circuit we used SG3525 to make PWM controller and use...

IR Controlled Fan Speed Controller

Introduction In this session we will discuss about IR(infrared) controlled fan speed controller, in this circuit it consists of 74HC164 shift register IC and relay with some non-polar capacitor. Components Used  1)74HC164 IC 2)PC817 optocoupler 3)5v four-relay 4)Non-polar Capacitor 3.3uF, 2.2uF, 1.5uF, 100nF 5)VS1838 IR receiver 6)2.2uF electrolytic capacitor 7)Leds 8)100E, 1K, 10K, 1M, 2.2E(1W) 9)5v DC 74HC164 In this IC there is 8-output of which we use only 4 to controller 4-relays Pinout -      IR Receiver Circuit - In this circuit it uses IR receiver VS1838 to sense ir signals and 74HC164 IC used to get serial output from Q0 to Q3. Components                                 IR receiver with 74HC164 shift register IC Regulator - In the regulator portion I used capacitor based regulator its main advantage is it does not makes any hum-sound or any distortive noise along triac based...