요청 내용
“Draw a 5 V Arduino GPIO interface with a pull-up resistor and pushbutton on one input, plus a 220 Ω resistor and LED on GPIO13.”
그렇다면Add a second LED output.Change the pull-up resistor to 4.7 kΩ.
이 도면에 담긴 내용
그 이면의 의사결정을 읽어 보세요.
01
10 kΩ pull-up keeps GPIO HIGH by default; button press = logic LOW (active-low).
02
220 Ω current-limiting resistor protects LED at ~14 mA for a 5V supply and 2.1V forward voltage.
03
SPICE netlist format serves as both schematic and simulation input.
Reuse for any microcontroller GPIO circuit reading a digital input or driving an indicator LED.