Arduinos parallel execution is not in sync

[rinon13]

Description: When 2 Arduinos connected to LEDs are executed in parallel with the same .ino code, the LED are not blinking at the same time.

Steps to Reproduce

1. Connect as shown above or take circuit from Gallery (Two Arduinos)
2. Add .ino code to both Arduinos

void setup(){
	pinMode(LED_BUILTIN, OUTPUT);
}

void loop(){
	digitalWrite(LED_BUILTIN, HIGH);
    delay(1000);
	digitalWrite(LED_BUILTIN, LOW);
    delay(1000);
}

3. Press "Start Simulation"
4. LEDs are not blinking in sync

Video of the process mentioned above.
Two_Ardinos_Problem.webm

Expected Behavior: Both LEDs are supposed to be blinking in sync.

Version and OS:

• OS: Ubuntu 22.04.1 LTS
• Browser: Firefox 110

Tested on:

• develop
• simulation.iitbx.in

[firuza]

Fixed in #479

[firuza]

Fixed in #479