Glad to see your still alive and kicking
The 5V line is a signal line and should not be used as a power source. In my design, I'm using that signal to indicate when the Saturn system is on or has been power cycled. The communication protocol for the FDD isn't very robust, so detecting a system reset is unfortunately rather important.
Yeah read your PDF document describing as much.
It's not the end of the world if one must rely on an external power source. I was planning to do some test with an ArduinoNano which can get it's power from the USB or an adapter. The SH-2 is wonderfully flexible in how it can communicate via serial so I if a cheap device like an ArduinoNano is used it will open many possibilities via it's many modules like sd card slot, wifi and bluetooth.
zone66x, would you be willing to send me a copy of your connector design files? I've been planning on creating a connector with a 3D printer, but the past year has been very hectic with work. The connector, combined with a couple of hardware improvements that I've been able to make over the past year, may finally make refining my design into a sell-able device feasible.
I started working on creating a communication port connector because your work and dilemma in producing a connector inspired me.
I'm planning to put the connector design on my thingiverse
account at some point so anyone can make the connector and hopefully make devices to work with it.
I tend to only put up designs that I've actually be able to successfully print consistently I still need to sort things out before I upload though.
I use a "cheap" DaVinci 2.0 Duo which uses the more widespread, accessible and cheaper FDM technology. What printer do you have or are planning to use? If your planning to use an SLA printer then the tolerances of my design will need to be adjusted due to the increased precision of those printers.
Here's some pictures of some of the design
and test print process
for anyone who's interested in 3d printing
My current design is using Molex spring type connector used
for connectors like the one used to power floppy drives. It seems to work but they are wider and thicker than what is actually needed. The main problem with this is that the walls between the pins and outer walls of the connector are very thin (~0.2mm and ~0.4mm respectively). If anyone knows of readily available alternative let me know
I still think that a design using male DuPont
pins should be possible, but I'm a bit worried that the it's inflexibility of the DuPont pins may possibly wear out the Saturn's communication port pin prematurely.
The male DuPont pins would be great to make a printable controller port connector though!
Another project in the near future maybe ....
Anyhow it's almost time for bed and I still want to get some SH-2 assembly working on my Saturn so I guess I'll leave it at that. Again, Glad to see you're still around and working on your backup thing for the Saturn