Not sure if this has been addressed before but looking for some help. I have the Arduino Uno and I'm working on a project to build a controller with different inputs and some outputs for readouts. In classic style, I got the Arduino Uno before realising that I might not have enough I/O points to connect everything I want. I believe there is a way to expand my Uno by using an I/O Expander? Has anyone done something similar? The controller will be for a specific game called Kerbal Space Station. There are quite a few articles helping with the build but not specific to what I am looking at.

Components I'll be using: INPUTS

• 2x 3 Axis Joysticks
• 11x Microswitches
• 6x Toggle switches
• 1x Analogue slider
• 1x 10 point rotary switch OUTPUTS
• 4x 12 pin LED Bargraphs
• 1x Serial LCD module display

I have the Arduino Uno and I'm working on a project to build a controller with different inputs and some outputs for readouts. In classic style, I got the Arduino Uno before realising that I might not have enough I/O points to connect everything I want. 

I believe there is a way to expand my Uno by using an I/O Expander? Has anyone done something similar? The controller will be for a specific game called Kerbal Space Station. There are quite a few articles helping with the build but not specific to what I am looking at.

Components I'll be using:

INPUTS:

• 2x 3 Axis Joysticks
• 11x Microswitches
• 6x Toggle switches
• 1x Analogue slider
• 1x 10 point rotary switch

OUTPUTS:

• 4x 12 pin LED Bargraphs
• 1x Serial LCD module display