How to Piggyback a Dreamcast Controller on a Universal PCB

Step 8 UPCB Cable

Now that the piggybacked controller is all wired up, all we have left is the cable going from the Universal PCB to the Dreamcast. Just like any other UPCB cable, let's take a peek at the .h file to see how we need to wire it up:

DREAMCAST   Looking at controller end that plugs into the Dreamcast ___________ | 5  3  1 | \  4   2  /  ---------    Pin 	Description		Standard Wire Color  1		Serial A 		red  2		+5v				blue  3		GND				black  4		sense			green  5		Serial B		white    Line 4, 'sense', is connected to ground in the controller. The Dreamcast  uses this line to detect when there is a controller in place. Since we  can connect it to ground inside the UPCB console cable hood, there is no  need to connect this to the UPCB itself.    	To make a UPCB cable for the Dreamcast Piggyback, match up pins like this:	D-Sub 15 Pin		GC Pin	1					3 (GND) 	2					Low	3					Low	4					High	5					High	6					Low	7					Low	8					2 (+5v)	9					NC - Not connected to anything	10					High	11					High	12					NC - Not connected to anything	13					1 (Serial A)	14					5 (Serial B)	15					Low 	You'll want to also solder in the 'sense' line to any one of the 'Low' lines.	I soldered mine into 15 along with the little jumper wire that connected it	to the rest of the 'Low' lines.

Wiring up the Dreamcast Piggyback cable is no different from wiring up any other UPCB cable. Connect all of the High and Low pins, then connect the wires from the cable itself, and you're done. Please check out the other two Instructables on making a UPCB cable:
How to build a console cable for the Universal PCB.