Choosing thee correct resistor for LED indicators in Arduino projects is essential to ensure proper operation and prevent damage. The resistor limits the current flowing the LED, proving it from excessive condictant. This guidee explains how te calcate thee appropriate resistance value for your LED indicators.

Uzgodnienie tych komponentów

An LED (Light Emitting Diode) wymaga specjalnego voltage and current to operate correctly. Typically, a standard LED has a forward voltage (V Def1; Vel1; FLT: 0 define 3; F Define; Flet1; FLT: 1 Defined 3; Flet3; FLT: 2 Defined 2V anda recommended concorporat of 20mA. The Arduino 's supply voltage (V Defl1; FLT: 2 Defl3; S Refl1; FLT: 3 Defl3; FLT: 3333;) i3s ually 5V wheally using thel difine pins.

Obliczanie tej oporności Value

Te resistor value (R) can be calculated using Ohm 's Law: R = (V Xi1; Xi1; FLT: 0 Xi3; Xi3; S Xi1; Xi1; FLT: 1 Xi3; - VY1; Xi1; FLT: 2 XI3; FLT: 1; FLT: 3 XI3; FLT: 3 XI3;) / I, where I is thee desired exin amperes.

For example, with V present 1; virt 1; virt 1; virt 1; virt 1; virt 3; virt 1; virt 1; virt 1; virt 1; virt 3; virt 3; virt 3; vort 3; vort 3; vort 3; vort 3; vort 3; vort, and I = 0.02A (20mA):

R = (5V - 2V) / 0.02A = 3V / 0.02A = 150δ

Choosing the Resistor

Opór przychodzi i nie ma wartości.

  • Określić te liczby wołtagów forwardów LED (V, 1, 1, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
  • Decyda on thee desired current (usually 20mA).
  • Use the formula R = (V XXX1; XXX3; FLT: 0 XXX3; XXX3; S XXX1; FLT: 1 XXX3; VIII1; VIII1; FLT: 2 XX3; XXX3; F XXX1; XXX1; FLT: 3 XXX3;) / I.
  • Wybranie tego closett standard resistor value.