Find out where to get a Rotary Encoder and an Ion Sputter for With A View and where the server switches are in ARC Raiders.
Macropads can be as simple as a few buttons hooked up to a microcontroller to do the USB HID dance and talk to a PC. However, you can go a lot further, too. [CNCDan] demonstrates this well with ...
In MCU-based projects, this design uses a single push button to switch on and switch off 5-V and 15-V supplies in sequence.