Bionic Butterfly (in progress)

A 54g bio-inspired flapping-wing robot. This project integrates dual coreless servos, kite fabric wings, and a custom feedback control system to replicate the intricate flight mechanics of a real butterfly.

Wings:

The Sail (fabric): Still looking for a good kite fabric that can last long throughout the flight. Normal kite material can be easy to stretch quickly because of the long flapping duration.

The frame (skeleton): will be using thin carbon fiber because the frame needs to keep the sail stretched tight without weighing the kite down. It’s stiffer and significantly lighter than wood or metal. I thought about using either bamboo or wooden dowels like back in the day when we were building our homemade kite. However, it would be very large and heavy. We flew them in windy days because of strong winds.

Micro-servos: 2 PTK 7465 MG 13g with metal gear coreless motor which will generate high torque. These are great for wings because they’re suitable for high frequency use. Plus, they balance light weight (13g plastic shell), anti-light vibration, and have good durability.

Digital proportional radio control system.
Receiver: FLYSKY FS-A8S 2.4G mini receiver PPM
Transmitter: FLYSKY FS-I6X to control the speed, attitude of the butterfly.

Brain: 1 Pro Micro Board 5V board, Type C Port for Arduino Leonardo.

Body:
I would need to 3D print a simple frame to keep all the stuff together in single square body, plus two hands (wing bases) to hold all the skeleton frames of the wings. For the material, I would be likely using plywood which is extremely durable and light weight.