Arduino-Controlled BLDC Fan Interface

I already have a universal BLDC ceiling-fan driver PCB running perfectly from mains power; what it lacks is an Arduino brain. My goal is to plug an Arduino (Uno, Nano, or whichever you prefer) into the... (Budget: ₹600 - ₹1500 INR, Jobs: Arduino, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, Home Automation, Microcontroller, PCB Layout, Prototyping, Signal Processing)