#hardwarehacker — Public Fediverse posts

If any of my #hardwarehacking #hardwarehacker #retrocomputing followers know the answer to this question about troubleshooting physical connectors of a #piscsi / #rascsi device, I'd really appreciate it.

I built one of these about a month ago, and I tested it yesterday on a retro Mac - the drive wasn't detected on the SCSI bus.

I checked the troubleshooting instructions in the #PiSCSI Github Troubleshooting page (https://github.com/PiSCSI/piscsi/wiki/Troubleshooting) and built out a set of jumpers in the DB25 connector, and ran the python test script. The result wasn't good.

I'm now in the process of getting a real DB25 breakout board with a plug so I can rule out my janky jumper wires as a culprit in the test going south. But my question is: If these six pairs of pins (shown in red boxes) are truly not signalling properly...wat do?

I'm not sure where the fault lies - is it a failure of the chips soldered onto the board? There was a lot of surface-mount that ain't perfect but seems to work. Is there some other component that has failed? It's hard to know how to approach the problem at this scale.

Any ideas?

Okay, an #introduction: Professionally I'm an #SysAdmin / Systems Engineer working currently in the Medical and #ERP fields. As a #WindowsAdmin I use #scripting to make my days easier with #Python and I'm currently teaching myself #nodejs.
Recreationally #Maker, #HardwareHacker, #3DPrinting, and #Watches. I love #cars #Porsche and mechanical things. I always have an #Arduino project on hand and I support the #EFF. ✌

Okay, an #introduction: Professionally I'm an #SysAdmin / Systems Engineer working currently in the Medical and #ERP fields. As a #WindowsAdmin I use #scripting to make my days easier with #Python and I'm currently teaching myself #nodejs.
Recreationally #Maker, #HardwareHacker, #3DPrinting, and #Watches. I love #cars #Porsche and mechanical things. I always have an #Arduino project on hand and I support the #EFF. ✌