KVM Switch

Switching HDMI and USB between multiple computers using keypad to allow work with multiple computers simultaneously.

Implementation

Used:

• Arduino pro micro (5V, 16Mhz, ATMEGA32u4)
• 2x PremiumCord HDMI switch 3:1
• MAX232 compatible IC
• ATEN USB switch 4:1
• 4x4 matrix keyboard

Keyboard

Simplest matrix keyboard was used and positioned on the edge of the table.