Yes, it is possible, though not for beginners.
I'm looking at the Gerbers and it appears everything is here. Does the version you shared here include the missing GND you noted on Page 4?
Also, would you be willing to share a short parts list? Mainly I'm just looking for the Molex part number for the MUSB connector so I can order it, and if there's a specific flavor of ATmega32U4 I should be shopping for.
Sorry to keep bumping an old project. Just looking for information... Thanks.
I believe the final posted version includes fixes for the known problems. I think I can find a parts list, let me look....
ATmega32u4 microcontroller (1) ATMEGA32U4-AU-ND
USB Connector (1) WM5461CT-ND
10uF Tantalum Cap 1206 (1) 399-3684-1-ND
Crystal 16MHz (1) 535-10907-1-ND
MMBT2222A NPN transistor (3) MMBT2222ATPMSCT-ND
22 ohm Resistor 0603 (2) P22GCT-ND
1k Resistor 0603 (1) P1.0KGCT-ND
10pF Capacitor 0603 (2) 1276-1027-1-ND
0.1uf Capacitor 0603 (4) 445-1316-1-ND
1uF Capacitor 0603 (1) 445-1604-1-ND
Diode 1206 (31) 1N4148W-FDICT-ND
470 ohm Resistor 0603 for LED (31) P470GCT-ND