void setup() {
pinMode(1, INPUT_PULLUP);
pinMode(3, OUTPUT);
}
void loop() {
int buttonState1 = digitalRead(1);
if (buttonState1 == LOW) digitalWrite(3, HIGH);
else { digitalWrite(3, LOW); }
delay(50);
}
TX button RX LED circuit circuit
ESP01 ESP01S
05 Dec. 2024
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Last Updated: 22 Nov. 2025
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