Raspberry Pi Pico: Controlling an External LED (GP14 + Breadboard)
The next step after Pico’s built-in LED: connecting an external LED to the breadboard and controlling it via the GP14 pin. In this project, you’ll learn how to use any of the Pico’s general-purpose GPIO pins as an output, the LED’s polarity (long leg = anode/+, short leg = cathode/–), and why a current-limiting resistor (220Ω) is required. If you don’t include the resistor, excessive current will flow through the LED and it may burn out. The circuit is very simple: Pico GP14 → 220Ω resistor → LE
