From a chatGPT site. Isn’t it impressive? I haven’t tried it but it looks about right.
Question: blynk code: turn a led on using esp8266
Answer: Here is an example of code in C++ for turning on a LED using the Blynk library:
#include <BlynkSimpleEsp8266.h>
const int LED_PIN = 2; // GPIO pin for the LED
void setup() {
pinMode(LED_PIN, OUTPUT);
}
BLYNK_WRITE(V0) {
int ledValue = param.asInt(); // Get the LED state from the app
digitalWrite(LED_PIN, ledValue); // Set the LED state
}
void loop() {
Blynk.run();
}
In this code, V0
is a virtual pin in the Blynk app that you can use to control the state of the LED. The BLYNK_WRITE
macro is triggered when the virtual pin value changes in the app, and the digitalWrite
function is used to turn the LED on or off based on the value received from the app.