Blynk Controlled Fan Regulator without Humming | Fan Regulator working explained | IoT Projects

in this video we'll be studying the circuit of a fan regulator and after studying that circuit we'll try to control the speed of the fan by attaching the release to it using the blink id platform over internet so let's get started now previously i made the ac dimmer circuit using which i was able to control the brightness of the ac bulb but if you attach that circuit in the ceiling fan you'll face one problem of humming sound many of my subscribers tried that circuit on the ceiling van and they faced this humming issue and among those subscribers there was kedar who is my friend and who also regularly visit this studio he also tried to install that ac dimmer circuit in the fan he faced the same problem and after that he came with a very simple yet entrusting solution that why not to use that same circuit which is used inside the fan regulator just make some changes in that circuit make it internet control and make a dimmer out of that so i love his idea as it is simple yet entrusting yet very very useful so let's start our journey of making a simple fan regulator to work over internet so i first got a new regulator from the store disassembled it and took out its circuit part at very first look you will find these two capacitors whose values are 2.2 microfarad and 3.3 microfarad respectively i desoldered them first as to study the connections of the circuit after desoldering the capacitors i just stirred in the connection of all the components using the multimeter and after studying it completely i found a circuit like this so here as you can see we have two rc circuits which will limit the current flowing through it and the value of all the components are something like this so here i do have a knob with five terminals this one two three four and a common terminal now let's observe it's working on the paper so i have a four-speed regulator with me so for the lowest speed the common terminal gets connected with this pin so now the current will flow through this path and it will result in the slowest speed when i put this circuit to one simulation software i found that at lowest speed the current flowing will be around 153 milliamperes now let's switch the knob to speed too in this case the current will be flowing through this path and i found that the current flowing in this path is around 229 milliamperes now when i switch the knob to third position this is ultimately getting connected with the first one as you can see the third and the first port are connected with each other and secondly when i tested the continuity on the knob i found out that at third position the knob is connected to both terminal 3 and 2. so with this connection the current will be flowing through both these circuits resulting in parallel connection of both rc circuits now when i tested this circuit in the simulation software the current flowing through them was around 382 milliamperes so that's the speed 3 of fan and for the fourth position of the knob the current will be flowing directly to the front regardless of any circuit in between and that's the maximum speed of your fan and now in the off position of the knob this common terminal is not connected with any point so ultimately the fan will turn off so this was my complete reverse engineering on the circuit of a fan regulator i hope you all got the idea about how this tiny little fan regulator actually works now make sure you hit the like button if you really learned something new learn something valuable from it now after understanding how the regulator works let us make it to control over internet and for that i'll be using my esp32 board and couple of relays you have to connect the relays and the esp32 board in this manner now here for controlling i'll be taking the help of blink application so here i will create a new project with the name fan regulator and i will simply add a slider to it now the step on the slider and select virtual pin v0 for my 4 speed control regulator i'll put the range from 0 to 4. that's it just click on ok now we are just left with the coding part so here's the code i'll just add my wifi credentials and authentication token which i got in my register email id that's it i simply upload this code to my esp32 board now by the time the code gets uploaded let's connect the relay with a fan regulator circuit for that you first need to remove all the components from the pcb and connect it according to this circuit diagram and if you don't want to waste a regulator i will suggest you to purchase all the components separately now that is more convenient and more cheap solution of this and after that make the connection of the relay and the circuit in this manner now let's connect the regulator circuit with the fan now be very careful while playing with the ac wires i will suggest you to turn off your mains before tweaking with the acis so after making all the connection now let's test our project in action [Music] okay so as you can see i'm able to control the speed of the fan using my blink application and this project is working over internet okay so i hope you got to know everything about the fan regulator circuit and how you can make your own fan regulator that works over internet now make sure you hit the like button and subscribe the channel if you haven't already and now just wait for my next little explorer and share with me thank you sms you

Channel: techiesms

Views: 82,853

Keywords: fan speed control using arduino, how to control fan speed using nodemcu, blynk fan control, blynk fan speed control, humming free fan regulator, esp32 projects, capacitive dimming

Id: kMqcRaBRDRY

Length: 5min 55sec (355 seconds)

Published: Sat Jul 11 2020