(Topic ID: 245925)

WOZ - Reformat Crystal Ball SD Card?

By harryhoudini

4 years ago


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#2 4 years ago
Quoted from harryhoudini:

I think my SD card has a problem. I have two WOZ in my house right now so I was able to swap crystal balls and at least determine that something is wrong with one of them. Initially it started out as the displayed image only showing the "SKILL" skill shot logo (not animated) no matter what was going on in the game. Then, eventually the ball stopped showing anything.
Once I swapped in a known good ball it worked. So I know the IO board and the cable are ok. On the other machine, the "bad" ball showed some diagnostics information (screen version, RGB logo, etc) and sort of displayed some of the right video, but not completely. So it seems like the SD card is either bad or corrupt as from what I know the screen gets control signals as to which clip to display. The display issues followed the ball, so it is something with the screen/card.
I suppose I could swap cards, but that means unscrewing both screens which I was sort of hesitant to do until I knew more. I probably have a spare SD card sitting around but wasn't sure if I can just copy files from a known good card. What format the card needs to be in, etc. Is there a download with the files somewhere? Card requirements (size, etc)?
It looks like this is the display: https://www.mouser.com/ProductDetail/4D-Systems/uOLED-96-G2?qs=72ObqG5T4UYobDDQ80ITTQ%3D%3D o https://www.sparkfun.com/products/11315
The company site is down right now, but I think this is the link: https://www.4dsystems.com.au/product/uOLED_96_G2/
Oh, can I hot swap the screens (plug and unplug)?... takes a good amount of time to keep powering on and off the machines.
ltg any insight?

Harry -- Only use this Kingston SDC4/8GB. This Crystal Ball device is finicky and requires a low capacity Class 4 card. This is the only one I have found that works correctly. Amazon sells them for $3.38 each. I hope that helps.

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