This is a keyboard specifically for summoning your summons in FFXIV! Although, technically it could be programmed to do anything you want - please watch the tutorial linked below to see what is required for this as I will not attempt to explain it.

This uses 3 cherrymx keys (I used these ones), 3 hot-swappable sockets for the keys (these ones) to make life easier, an arduino ‘Pro Micro’ (I used this one) & 3 “3x10mm” countersunk screws. No links are affiliated or anything, it's just what I got at the time. Only other requirement is some kind of glue for attaching the silver frame part to the case.

I am uploading this under a creative commons (attribution) license & encourage people to develop it further. For example, it would be easy to add LEDs beneath the buttons and program them to flash for a certain time after clicking, or you could extend it with a Bahamut/demi-summon button to the end. There is also a .STEP file for easily importing to CAD software to make changes.

This is the tutorial I used to create the code for this keyboard:

I have uploaded the code I use in the SMN_Keys.zip file. Before this project I didn't understand how easy it is to add custom keyboard buttons to a 3D printed design, please don't feel afraid of giving it a go.