<aside>
About this version: These are the parts I used to upgrade the version 1 prototype into a more compact and wireless version. This version uses a battery and a 2g servo.
STL files will not be for sale this version since it’s a pretty big project for me to make sure it works for everyone’s different setups.
But you can check out version 1 to learn how the gears and mechanisms work to make your own using the new parts in version 2.
Version 1 link: Flapping Butterfly Clip Build Guide v1
</aside>
If you’re a beginner and new to building electronic projects, feel free to join my discord and I’ll try my best to answer questions when I can. If you’re an experienced builder, would love for you to share your expertise!
Join the Regine's Digital Cafe Discord Server!
| Item | Quantity | Additional Notes |
|---|---|---|
| LiPo Battery | 1 | 3.7V 200mAh 30C (only 15 minutes of runtime though, you can use a higher mAh battery as long as it can output at least 2-3W) |
| Boost Converter | 1 | 5V 2A output TTP |
| Microcontroller (ESP32 S3 Supermini) | 1 | ATtiny boards can work, and may remove the need for the boost converter for an even more compact fit |
| DSpower 2g servo | 1 | 3.7–4.2V model |
| 24 AWG wires | as needed | |
| 5mm magnets (optional) | 8 | If you want to add/remove different wings easily, you can add magnets to the base of the wings & gears to snap it on and off |
| TTP223 touch sensor (optional) | 1 | touch controls if you want it turned on and off via touch |
Tools: Soldering Iron, multimeter, 3D printer to create your own Butterfly wings and hairclip case
| Component | Connect to |
|---|---|
| Battery (+) | Boost Converter VIN |
| Battery (-) | Boost Converter GND |
| Boost Converter VOUT | ESP32 5V pin |
| Boost Converter GND | Common GND |
| Servo ground | Common GND |
| Servo input | ESP32 GPIO2 |
| Servo power | Battery (+) |
| Touch sensor | ESP32 3V3 |
| Touch sensor | Common GND |
| Touch sensor | ESP32 GPIO 1 |
You can copy and paste the code below into Arduino IDE
#define MAX_EASING_SERVOS 1
#define ENABLE_EASE_SINE
#include "ServoEasing.hpp"
int startPos = 0;
int endPos = 135;
int flapDuration = 1500;
bool wingsClosing = true;
bool powerSwitch = false;
bool lastSwitchState = LOW;
ServoEasing wings;
void setup() {
wings.attach(1, startPos);
pinMode(2, INPUT);
wings.setEasingType(EASE_SINE_IN_OUT);
}
void loop() {
bool switchState = digitalRead(2);
if (switchState == HIGH && lastSwitchState == LOW) {
powerSwitch = !powerSwitch;
}
lastSwitchState = switchState;
if(!wings.isMoving() && powerSwitch) {
if(wingsClosing) {
wings.startEaseToD(endPos, flapDuration);
}
else {
wings.startEaseToD(startPos, flapDuration);
}
wingsClosing = !wingsClosing;
}
delay(1);
}
If you build your own, I’d love to see it! Post your version and tag me, or share it in the Discord to show off what you made. I may even feature some of your builds on my social pages! 💛