Introduction: Esp8266 Based Boost Converter With an Amazing Blynk UI With Feedback Regulator
In this project I will show you an efficient and common way how to step up DC voltages. I will show you how easy it can be to build a boost converter with the help of an Nodemcu. Let's build it. It also includes a on screen voltmeter and a feedback system to keed voltage steady at any load. With an amazing Blynk UI its so easy to use
Using this circuit you can charge a 12v battery or light up a 12v led etc using 3.7 to 12v dc
use slider to set voltage and this circuit will automatically output that setted voltage and keep it stable even if load Changes. It also displays voltage dutycycle etc in blynk app
Step 1: Supplies
I am just kidding We dont need everything in this pic
We just need
An N channel mosfet
capacitor 100 - 1000 microfarad
Coil 100uH i got a toroid from atx power so i made one with that.
Diode
esp8266 or Nodemcu
And 2 resistors. value we can calculate in next step
i entirely got everything from an old atx power supply
Step 2: Circuit
All data is available in above pic
i wold recomend adding some protection for nodemcu But i used it for more than 7 hours and i it worked fine
Step 3: Calculating Resistors of Voltage Divider
i needed a maximum output 30v so i used resistors R1 as 2000 and R2 as 220 ohm
you can also calculate your own useing https://ohmslawcalculator.com/voltage-divider-calc...
second off all please remember the maximum voltage of your resistors we need it to calculate voltage in arduino code. To do that put
R1 R2 as your choice and Vout as 3.3v
I got Vmax_input around 33.274 v By using 220 and 2000 ohm resistors
Now we got values of R1 R2 and Vmax_input
Step 4: THE CODE
replace wifi password,ssid,Blynk auth, and Vmaxinput from step 3
code also available at github https://github.com/Athul2711/Boost-converter.git
Over time i will make it more stable and accurate now its just a beta build
Attachments
Step 5: The Blynk App
Vertical Slider at V1 to control voltage Use 0 to 30
Vertical Slider at V2 to control pwm duty cycle ( it has a use figure it out your own just for fun Use 0 to 1000
A button At V3 to control diffrent modes Use 0 and 1
Has 2 modes stable mode and unstable mode
Value display at V10 to see voltmeter reading
Level At V11 to see duty cycle used
Reference pic for more info Or just design it on your own ways
use first slider to set voltage and this circuit will automatically output that voltage and keep it stable even if load changes
Step 6: Success!
You did it! You just created your own Boost Converter with an amazing blynk ui and feedback system!
Feel free to mail me any time
If you are planing to write this to your blog or youtube etc you are always welcome:)
Please let me also know it. just text me the link At Athulkrishna2711@gmail.com
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