Not the most useful mod I have done, but a cool one.

Amazon links help support this channel
My eBay Store (Amiga VGA/HDMI Adapters, Optical Mice, Gotek Floppy, and more) = http://www.ebay.com/sch/jond5/m.html
Buy anything on Amazon with this link to help me (no extra cost) = https://amzn.to/3drPhhp
My Website = http://www.retrofriends.com

00:00 Intro
01:18 Design
08:13 Cutting the Keys Out
10:55 The PCB
14:54 Assembly of the PCB
24:57 Test Fitting
25:44 Modding the Keyboard Controller Board
26:58 Making Everything Fit
28:29 Installing the Keycaps
30:39 The Finished Product
33:21 Demonstration and Final Thoughts

BOM
The A500mini = https://amzn.to/3TY8B5D
Keyboard Controller = https://amzn.to/3y6VeYA
Microswitches (x100) = https://www.digikey.com/en/products/d...
Ribbon cable pin header = https://www.digikey.com/en/products/d...
1206 SMD LED = https://amzn.to/3LYq2QO
Hookup wire, 30 AWG = https://amzn.to/3yfhsYj
USB hub = https://amzn.to/3V4cK9u
USB dust cover = https://www.thingiverse.com/thing:148...

PCB 1.2mm thick on PCBWAY = https://www.pcbway.com/project/sharep...
PCB from my ebay store = http://www.ebay.com/sch/jond5/m.html
Thingiverse link for membrane and spacer = https://www.thingiverse.com/thing:554...

Tools

Dremel = https://amzn.to/3rybi1L
Soldering station = https://amzn.to/3fI9v7o
Sandpaper 220grit = https://amzn.to/3CxNam8
Xacto knife = https://amzn.to/3SDUsKP
TPU filament = https://amzn.to/3V4Uvkv
Solder flux = https://amzn.to/3Cx37ZG
PCB holder = https://amzn.to/3CxvR4D
Headband magnifier = https://amzn.to/3CacBJa
CA Glue = https://amzn.to/3V0EXOq