I would like to use image machine learning model to light up stars by hand gesture. Inspired by below video from YouTube.
First at all, I used Teachable Machine to train my model – to recognized zero to five for six hand gestures. Each class has about 127 samples to be trained.
Then wired up the leds and Arduino .

The result is not stable. Will do it again and upload video later….
https://editor.p5js.org/yac4/sketches/mGIVrYRNn
// Arduino UNO
int LEDs[] = {8,9,10,12,13};
void setup() {
for(int i = 0;i<4;i++){
pinMode(LEDs[i], OUTPUT);
}
Serial.begin(9600); // initialize serial communications
}
void loop() {
if (Serial.available() > 0) { // if there's serial data available
int inByte = Serial.read(); // read it
if (inByte > 0) {
for(int i = 0;i<inByte;i++){
digitalWrite(LEDs[i], HIGH);
}
} else {
for(int i = 0;i<5;i++){
digitalWrite(LEDs[i], LOW);
}
// sets the LED off
}
delay(200); // waits
}
}