The Journey Begins

I intend to build some GCDual kits to install for a few local folks. As I haven’t really done anything on this scale before, this will be a learning process, and I want to log my progress here in case anyone else wants to try.

All of this is possible thanks to the amazing work of citrus3000psi for the boards and Unseen for gcvideo. All of the information on this page is compiled from citrus3000psi’s oshpark page, his website, the gcvideo thread on shmups, and the gcvideo github. I’ll add sources here as I go.

Needed Tools

Straight off of Dan’s install instructions:

Temperature Controlled Soldering Iron
Flux
Extra Fine Soldering Tip
Solder Wick
99% Isopropyl Alcohol
Side Cutters
Drill Bit
Drill
Sharpie
Small Square File
Small Flat File
Metal Cutting Tool, i.e. Dremel

Ordering Boards/Parts

The kit consists of three boards: the Hookup board that solders on to the digital port and multiout pins, the main board that holds the FPGA, and the HDMI extension board that is connected by an FFC cable and sits above the digital port.

I ordered my parts from Digikey. I’m normally a Mouser guy, but the FPGA is only on Digikey and I’m not paying for shipping twice.

Hookup Board

Version 1

TVS Diode: ESD5Z5.0T1G

Main Board

Version 5.3

JP1 – Short for onboard flashing.

JP2 Open – Non Attenuated CSYNC

JP2 Closed – 75Ohm Attenuated CSYNC

Reference	Value	Notes
C1, C2, C4, C5, C7, C9, C10, C12, C15, C16, C17, C18, C20	.1u	0603 50V
C3, C8	10u	0603 10V
C6	4.7u	0603 10V
C13	.01u	0603 50V
C21	1u	0603 50V
D1	LED	0603
D2	AD1580BKSZ-REEL7	SOT-23-3
R1	250	0603
R2, R10	4.7K	0603
R3	100	0603
R4, R5	75	0603
R7	384	0603 1%
R8, R13, R14	10K	0603
R9	180	0603
R11, R16	330	0603
R12, R15	1K	0603
U1	XC3S200A	100-VQFP
U2	ADV7125	48-LQFP 50Mhz
U4	TLV70212DBVR	SOT-23-5
U5	M25P40-VMN6PB	SOIC8
CON1	2-1734592-0	20 PIN FFC .5mm