✅ ❌ Do NOT use it for the new Blynk IoT platform. 3. Basic Code Structure Here is a minimal working example for connecting an ESP8266 to Blynk Legacy:
void setup() pinMode(D4, OUTPUT); Blynk.begin(auth, ssid, pass); blynksimpleesp8266 h
void setup() Serial.begin(115200); delay(100); ✅ ❌ Do NOT use it for the new Blynk IoT platform