First Arduino project, LED traffic light, tama ba yung wiring?

Uno, Nano, Mega, Pro Mini. Sketch help, board issues, shield compatibility.
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kuya_jerome
Posts: 6
Joined: Tue May 05, 2026 11:39 am

Magandang araw po sa lahat. Si Jerome ulit, OFW recently retired. Nakapag-build na ako ng first project, LED traffic light na sinabi ng grandson kong gagawin namin sa store-bought kit.

Setup ko:
  • 3 LEDs (red, yellow, green) each with 220ohm resistor in series
  • Common cathode connected to GND
  • Anodes to digital pins 2, 3, 4
  • Simple sketch with delays
Gumagana siya. Pero may konting flicker minsan sa green LED. Normal lang ba or sign ng mali? Yung resistors lahat parehong color band (red-red-brown-gold).

Salamat sa patience, basic question lang po pero may pagkaba ako pag ako maglagay ng kuryente sa kahit ano. Habang nag-aaral, kelangan ko po ng tiyaga niyo.
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