u/DarkwolfAU

QHY Minicam8M USB Errors?

Just got myself a Minicam8M which I'm running off my Mele Quieter 4C with NINA. I have the latest drivers from QHY. I'm using Linearity HDR mode.

I have an intermittent problem. Sometimes when shooting, usually late at night when it's been shooting for a few hours, the camera 'bombs out' and starts producing invalid frames - completely black, gain in the metadata is set to -2 billion, and Windows Device Manager reports a USB problem with the device. The camera never self recovers when this happens. I have it plugged into the USB 3.2 Gen2 port, and I've tried turning down the USB rate in NINA from 50 to 30. Didn't seem to help.

I suspected the problem might have been power, since I had it all running off a single 12v cable going into my power pack, which rated that connector at 3A. So I rewired everything to have each 12V source going off a different port on the pack (the pack is rated to 120W total on 12V). I'm using about ~35 watts peak. So I don't think the problem is that any more.

Anyone else seen this problem? In case it's relevant, I'm not using the USB cable that came with the camera, I'm using the USB cable that came with my ASI533MC Pro.

Is this a USB issue? A data rate issue? Power? USB drivers? Any ideas?

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u/DarkwolfAU — 9 days ago

So I just got my Minicam8 and OAG, and I've noticed something... I can't seem to put the ASI220MM far enough into the OAG for it to focus! I've turned the focus dial on the OAG as far in as it will go, and I've removed the extension from the ASI220MM so that it's only got the thin 2.5mm black piece on the end, and I can't push in the guidecam far enough to focus. It's only just off, but not at critical focus. Anyone got any ideas about what I can do about that?

It looks like the ASI220mm isn't physically long enough until you hit the wide part of the barrel for it to get far enough into the OAG to focus.

Or am I out of luck and I have to get a new guidecam that's longer?

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u/DarkwolfAU — 22 days ago