RGB-LED MOSFET Circuitry Help

franiuxd12 · November 10, 2025, 7:04am

i need help in bulding this small circuit the truth is i cant read schematics(yet) so can anyone that can read this help me?

3 × P-channel logic-level MOSFETs (examples: IRLML6402, SI2301P, AOZ8807P, etc.)
3 × 220 Ω resistors (in series with the LED channels)
3 × 100 Ω resistors (in series with MOSFET gates – optional but recommended)
3 × 10 kΩ pull-up resistors (each gate pulled up to +5 V)
LED common cathode → GND
```
+5V (Pololu / Arduino 5V)
|    |    |
|    |    |
```
|R220|R220|R220| ← series resistors for each LED color
```
|    |    |
```
AnodeR AnodeG AnodeB
| | |
DRAIN DRAIN DRAIN ← P-MOSFET (P-channel)
| | |
MOSFET MOSFET MOSFET
(P) (P) (P)
| | |
SOURCE SOURCE SOURCE
| | |
+5V +5V +5V

Common cathode (LED) → GND

Gate connections:
Arduino D9 —[100Ω]— Gate R —|| 10kΩ pull-up ||— +5V
Arduino D10 —[100Ω]— Gate G —|| 10kΩ pull-up ||— +5V
Arduino D11 —[100Ω]— Gate B —|| 10kΩ pull-up ||— +5V