I've also concluded that the FCV3 and the Powerbox Advance Gen 2 is not a good combo. Evans even sent me a new board, but the same thing kept happening. Sometimes it manages a focus-run, sometimes it disconnects after just a couple of move-sets. If I connect the cube directly to the PC, everything i...

New board received. Easily fitted, easily connected. Everything worked fine for a little bit, but first focus-run I did when the clouds cleared ended up in a dropped connection just as the focus-run finished. I need to physically remove the USB-cable (rebooting the powerbox from Unity is not enough)...

That's really great to hear.

I got sent a new board for the focuser as well, will probably be here within the next few days. Will update with progress once fitted (and the skies clear again).

The new board shipped from Pegasus Support arrived today. It took 5 days to arrive, which is a land speed record, I believe. I installed the board (easy to do), put the FC3 back on the Esprit, connected everything on the mount inside the house, and powered up. I've done about 90 minutes of testing ...

Falcon Rotator is probably gonna be my next big astro-purchase too.

Please update when you've received the new board and have been able to test it. If that solves the issues you had with the FC3, I'll ask them to send me one as well.

In the testing that I've done, I have consistency only when a USB cable from FC3 connects to a port on the mini-pc. I've had other things go wrong as well, the result being that we think I have a bad board in my FC3. Pegasus support is shipping another one that will be here in a week. Hoping this w...

Was able to test for a couple of hours yesterday. Tried no less than 3 different cables (two of which were brand new), and experienced disconnects on all of them. Just to rule out my Powerbox, I switched ports there too, and the same thing happened.
Switched cables back to the PC and it worked again.

Wheeljack are you using the exact same cable to connect to the PC that you were using for the PPB connection? When I first purchased the FC3 I had a really annoying intermittent connection issue with it - turned out to be the USB cable! Brand new short cable, decent quality - but my connection issu...

Think it's meant to say that earlier versions than 1.4.1 has the bug and that 1.4.1 contains the fix. I updated to 1.4.1 when it was available (a little less than a week or so ago?). I am still experiencing disconnects when connected via the Powerbox, but not when cabled directly to the PC. It's not...

Was able to test a little more today. Still a thin haze outside (and a full moon as well) so useless conditions to image in, but platesolving, focus, guiding and all of that works fine. I repeated the results from yesterday. The focuser keeps losing connection, when connected to the USB ports on the...

Same thing happened to me (ironically enough while updating to the previous firmware). Contacted support and they provided me with a guide on how to reset the software and gave me a tool to update manually. Was able to find and connect to it after that, and even update to the new version a couple of...

Unity version 1.15.2195.133 Focuscube v3 firmware 1.14 First tried connecting it via the Pegasus Powerbox Advance Gen2, using the USB 2.0 port. But after connecting to NINA and trying to move the focuser 500 steps, same thing happened almost immediately. Focuser moved 500 steps and lost connection. ...

More updates.

Noticed there was both a new version of Unity which also came with ASCOM driver-updates as well as a firmware update for the Focus Cube V3.
I updated both, and if the weather holds I will give everything another try tonight.

Hi, I will send email to Pegasus Support this morning. Good idea, BTW. Quick question, what settings are you using in NINA for step size and backlash? Step size can vary depending on focal length and optics as I've understood it. I usually start at around 100, do an autofocus and look at the graph....

Thank you for posting. That shows that there are more people than me with the exact same problems - which is a little reassuring to see, as that hopefully means a fix is on the way. Send an email to support, they're usually quick with response. I have a pending case I am still waiting to hear back f...

The autofocus step size is depending on focal length and camera used so no real "one-size-fits-all" in my understanding. I have usually started at 100, done an autofocus run and watched the curve. If there are too many steps needed, you can try to increase the step-size. In my case, I noti...

More updates. Brought the rig outside (-6c). Everything worked fine until I tried an auto-focus run. It worked fine for about 8-9 steps, then the focuser stopped moving while NINA still showed it as "moving", which again turned into the earlier scenario. Connection lost. Disconnected and r...

Update: After having experimented a lot. Different cables, different computers and even tried connecting the focuser directly to the PC (instead of via the PowerBox) I think I've come a little further. Whenever I tried to focus back or forth, it could work 3 or 4 times, before it would suddenly just...

I'm connecting mine via a Pegasus Powerbox Advance Gen2, using the USB 2.0 ports. I emailed pegasus prior to placing an order and they assured me that would work. I'm now thinking this might not be the case. On the powerbox, I'm currently using 2x Dew Heater ports, 2x USB 3.0 for imaging camera and ...

I also have a Focus Cube v3 and are having the exact same issues as you are experiencing.
Did you figure it out or did support find a solution?