3 Input 8 RGB LED Output Expander board

### DESCRIPTION

I designed this board as i only had a few pins left on the microcontroller. So i could control multiple LEDS with single I/O pin.

### TECHNICAL DETAILS / COMPONENTS

Component List

- 8 Common Anode RGB LEDS

- 8 1x4 0.1in Pitch  Female Header pins (D1-D8)

- 1 1x2 0.1in Pitch Female Header pins (Power)

- 1 1x3 0.1in Pitch Female Header pins (RGB)

- 3 SOT23 NPN Transistors. (Q1,Q2,Q3)

- 3 Transistor Input Resistors (R1,R2,R3)

- 8 Red Colour LED Resistors 180Ohm 1206 package(R1,R4,R7,R10,R13,R16,R19,R22)

- 8 GREEN Colour LED Resistors 120Ohm 1206 package(R2,R5,R8,R11,R14,R17,R20,RR23)

- 8 BLUE Colour LED Resistors 100Ohm 1206 package(R3,R6,R9,R12,R15,R18,R21,R24)

### LEARN / TOPIC / BUILD INSTRUCTIONS

Note: Choose a Transistor that can handle at least 240mA of continuous currect.