Cheap $10 Macro Pad

###A macro pad for under $10.

##Parts Required:
- macropadv444.stl (included) *1
- Key_Switch_Tester_4x2.stl from https://www.thingiverse.com/thing:4120804/files by riskable
- Arduino Pro Micro (or any other 32U4 based microcontroller) *1
- Cherry MX compatible Switches (I used gateron blue switches) *8
- Cherry MX keycaps (I used https://www.thingiverse.com/thing:2288281/files) *8
- 5mm LEDs (dual colour is also supported) *2
- 100ohm resistors *4
- Wires
- Solder
- 2mm PVA foam - 1 sheet
- A printer (2 dimensional)
- Micro USB cable
- Double sided tape

##Aliexpress Links:

- Switches:
https://www.aliexpress.com/item/32980039972.html?spm=a2g0o.productlist.0.0.61842dccx8ussy&algo_pvid=c2cc961b-a046-474d-9074-c3145b3b3ff9&algo_expid=c2cc961b-a046-474d-9074-c3145b3b3ff9-1&btsid=0b0a556816068266191712219eb92b&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

- Pro Micro:
https://www.aliexpress.com/item/32978678381.html?spm=a2g0s.9042311.0.0.fd4d4c4d