Hello. I've been stuck on something for a while that I need help desperately for a big project I'm building. It's a completely remote Tornado Machine with at least 8 different remote functions via Blynk IoT controller. The problem I need help with, and that I've been searching, and trying for a while is for a Motor Speed with a virtual Variable Speed Controller Slider via Blynk IoT with either ESP32 or ESP8266(Nodemcu). What I'm looking for is the proper code to set up such a thing. I've probably tried at least a dozen different codes, that I've found online or that Google Generative AI has gave me, but for some reason Blynk doesn't seem to be able to either communicate, receive, or transmit what its supposed to be doing. I just end up with a dead virtual slider...
here's the breakdown:
-It's for Blynk IoT
-It needs to have a virtual slider
-It needs to be a variable speed control
-It needs to be for a DC motor(doesn't matter the voltage)
-It needs to be in use with either ESP32 or ESP8266/Nodemcu(I have both that I can work with)
-I'm looking for the code specific for a DC motor NOT a fan motor speed control.
-please be specific what you're explaining if you're including a certain circuit needed to be built for the code you're sharing.
-IF POSSIBLE, please have top knowledge or firsthand experience with what I'm asking help for, to avoid any further confusion, frustration, and time for myself.(again, this is NOT mandatory, but it would be nice.)
Thank you so much for your help and participation in making my project a reality. It has been a lifelong dream to be able to make a beautiful tornado machine I can call my own. 
(this is my tornado machine):
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