My Duet 3 board has arrived
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the biggest positive (for me) is that it brings wifi to the table - and likely a webcam shortly; but its hard to not argue that its just another thing that can break, so stand alone should statistically be more robust? (and cheaper:)
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@bearer said in My Duet 3 board has arrived:
the biggest positive (for me) is that it brings wifi to the table - and likely a webcam shortly; but its hard to not argue that its just another thing that can break, so stand alone should statistically be more robust? (and cheaper:)
I think it quite easy to argue for an SBC, I also think we can agree that the Rpi SBC is a mature enough technology to be considered sufficiently stable from a hardware point of view.
Also the additional feature set that an SBC brings to the table operating in parallel with the Duet 3 makes standalone operation, only makes sense as a last resort.
On the point of financial economics, I don't think the Duet 3 is aimed at the economy end of the market to the point of where an extra 40.00 or so units of money is going to be a deal breaker.
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@CaLviNx said in My Duet 3 board has arrived:
Also the additional feature set that an SBC brings to the table operating in parallel with the Duet 3 makes standalone operation, only makes sense as a last resort.
Except that right now, at this point in time, the additional feature set for the RPi is practically non existent. My RPi is fitted and ready to go. But I re-iterate that as of now I don't see any compelling reason for me to "press the switch" as it were. When the firmware is a little more stable, and maybe when the pluggins or add ons start to materialise, then I'll start to use it.
Unless of course someone can give me a compelling reason why I should use it right now. I don't need WiFi and stand alone upload speeds of 1.1MiB/S are more than adequate. What else am I missing out on right now?
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@CaLviNx said in My Duet 3 board has arrived:
Personally don't see any positive effects of running a Duet 3 in standalone mode, But I'm sure there will be someone along momentarily disputing that though..
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I received mine the other day, a ver1.0. Im curious what distinguishes it from ver 0.6
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Mines waiting for me at the local sorting office
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@deckingman said in My Duet 3 board has arrived:
People have told me that killing power is not a kind thing to do to a RPi.
I think this is (ancient?) history. I use Pi based machines a lot, and I haven't shut one down in the last couple of years. Just punch power. I have never had any issues.
I can't prove this either way... but I've seen a lot of people say it is low to zero risk with current hardware and OS.
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I have had several corrupt or dead memory cards on Pi Zero W's but they are cheap memory cards and get written to continuously in a surveilance camera setup. I now use industrial memory cards on anything that is critical. These cards have integral write equalization and the frequent writes are distributed all over the memory card automatically. Unfortunately you don't get these at your local drug store or Staples store and they might cost double of a cheap card.
I have had a pi 3B+ running OctoPrint for maybe 2 years without a single issue on a cheap card. -
Hmmm... I have no way to verify, but I understood even "mid level" consumer SD are all built around chipsets that have wear leveling.
Not ultra-cheap crap, but not expensive speciality either.
Things like Sandisk should have it.
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@Danal said in My Duet 3 board has arrived:
chipsets that have wear leveling.
physical damage and wear leveling is only one aspect, the other is partial filesystem updates which can in the worst scenario render the filesystem unbootable with the card being physically fine; albeit unlikely. I share your experience of not having had issues for the most part, but I've also experienced one case of total data loss with the only likely culprit being losing power a few times a week for a few weeks.
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I do have Sandisk cards but do not recall ever having seen anything about wear leveling on the packaging and I would think this would be important to mention and an important selling feature. I am not sure if the dud memory cards included a Sandisk unit.
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@bearer said in My Duet 3 board has arrived:
@Danal said in My Duet 3 board has arrived:
chipsets that have wear leveling.
physical damage and wear leveling is only one aspect, the other is partial filesystem updates which can in the worst scenario render the filesystem unbootable with the card being physically fine; albeit unlikely. I share your experience of not having had issues for the most part, but I've also experienced one case of total data loss with the only likely culprit being losing power a few times a week for a few weeks.
Yeah, I'm not talking about wear at all, that came into the thread later. I'm talking exclusively about not closing/unmounting the file system, just cutting power.
Again, I can't prove anything, and one incident does not a statistical universe make, and so on and so forth. I'm just telling bystanders to the thread that there are those of us who choose to power down without a shut down.
We'll see if that bites me someday.
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I'm hoping to see a revised image where the static parts are mounted read-only to prevent corruption, with only the "sd card" mounted read/write, but that makes updates a little more cumbersome; given the low odds and smal consequences I recon its not high on the priority list
