Let me know if you want a step‑by‑step video guide or help troubleshooting a specific Proteus error.
void setup() { pinMode(13, OUTPUT); } void loop() { digitalWrite(13, HIGH); delay(1000); digitalWrite(13, LOW); delay(1000); } Arduino pin 13 → 220Ω resistor → LED → GND proteus 8.9 sp2 professional with arduino 1.8 free