This is a community collaboration to create a cost effective, easy to produce and assemble jamma extension cable with the best performance possible; especially in regards to the power, video and audio lines.
The concept is two separate PCB's, one with a jamma edge connector to attach to one's arcade board, the other with a jamma finger to attach to one's supergun / jamma harness.
The two PCB's are interconnected via two separate cables. A 24 pin ATX cable which contains all the wiring for power, video and audio, and a 34 way IDC cable for inputs, switches and everything else.
The cables are able to be purchased pre-assembled saving on assembly time. The PCB's can be ordered from the PCB fabrication house of your choice. Soldering is minimal with only 5 connectors to be soldered.
Parts list:
https://s.click.aliexpress.com/e/pcWk425
https://s.click.aliexpress.com/e/crx4IMfR
PCB details:
These aren't something I plan on producing and assembling myself. The idea is to provide the resources for people to fabricate their own. That said, some people will undertake the task of selling pre-assembled units ready to use, such as @Mitsurugi-w and @oneleaf86.
Current version 1.6 - 28th Jan 2019
The concept is two separate PCB's, one with a jamma edge connector to attach to one's arcade board, the other with a jamma finger to attach to one's supergun / jamma harness.
The two PCB's are interconnected via two separate cables. A 24 pin ATX cable which contains all the wiring for power, video and audio, and a 34 way IDC cable for inputs, switches and everything else.
The cables are able to be purchased pre-assembled saving on assembly time. The PCB's can be ordered from the PCB fabrication house of your choice. Soldering is minimal with only 5 connectors to be soldered.
Parts list:
- 1 X PCB (JX_FINGER.ZIP)
- 1 X PCB (JX_EDGE.ZIP)
- 1 X EDGE CONNECTOR 56P 3.96MM PITCH
- 2 X IDC HEADERS 34P ANGLED PCB MOUNT
- 2 X ATX HEADERS 24P ANGLED PCB MOUNT
- 1 X IDC CABLE 34 PIN PLUGS REVERSED
- 1 X ATX CABLE 24 PIN MALE TO MALE PLUGS REVERSED
https://s.click.aliexpress.com/e/pcWk425
https://s.click.aliexpress.com/e/crx4IMfR
PCB details:
- Dimensions: 125mm X 38mm
- 2 layer PCB
These aren't something I plan on producing and assembling myself. The idea is to provide the resources for people to fabricate their own. That said, some people will undertake the task of selling pre-assembled units ready to use, such as @Mitsurugi-w and @oneleaf86.
Current version 1.6 - 28th Jan 2019
- Tidied up the ground plane, increased thermal relief width.
- Trace optimisation.
- Added x 4 holes (as opposed to x 2) for more secure PCB feet mounting.
- Jamma finger edge sized to 114.3mm.
- Edited IDC footprint to suit an angled connector and repositioned so that the IDC connector sits flush with the edge of the PCB.
- Reworked ATX and IDC footprints. Larger holes for ATX and IDC connectors.
- Added revision number to PCBs.
- Adjusted jamma edge to accommodate all types of edge connectors.
- Copper surround around mount holes.
- Mount holes positioned 4mm from each edge.
- No vias.
- Copper pour for +5V, increased power, audio, video trace width.
- Increased ATX pad size.
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It will come in real handy.
