[Question]-So is that it? DB820C is dead?


Will that board be made available without the robotics kit? I don’t see much use for the rest of the parts, at least for my own purposes.


And how tall is that ethernet port? I think the CE specs have a limit of ~7mm?


Something we are still working on. Unfortunately I can not give you a definitively time at this point.


the design of the mounting option makes it not interfering with mezzanine and within range - the exact height I will take a measurement later.


@Loic shared a picture of it from the side, and it definitely will interfere with any mezzanine that covers the area of the board with the ethernet plug, which at this point, looks like all available mezzanine’s listed on 96boards.org, including the UART mezzanine. In fact, the robotics mezzanine that the kit includes has a cutout to go around the ethernet plug. The presence of that ethernet port on the top of the board where it is, is a very unfortunate design decision, since it will necessitate the use of a spacer board. It would be much better if it were on the bottom of the board, or some kind of dongle. To be honest, with USB 3.0, I don’t see a particularly great need for the board to include ethernet. Its nice, but not worth the tradeoffs, at least not on a standard footprint CE.

The good news is that a spacer board would be fairly easy to design. In fact, it would be simply the addition of a cutout to an existing stackable mezzanine template; https://github.com/96boards/mezzanine-community/tree/master/template/gEDA

Or even with a little bit of brutality, one of the $5 audio mezzanine’s could be turned into a spacer.


I am not sure I follow - please take a look at the measurement here.


Your ruler is clearly showing it at 13 mm (9 mm taller than allowances) and clearly shows that the mezzanine that is attached has a hole cut through it to fit around the ethernet port.

If you replace that mezzanine with any other, it will not fit.


Ok I see your point now. You are right.

We will have to have this mezzanine as convertor.


Any updates on availability of updated 820c?


We are looking at refill with Arrow within Q3.19.


Wow. That’s really sad. Why is it so hard for this board to be made available?


this is due to certain critical part availability. We are exploring other venues still but this is the best we have so far.


What is the critical part? There doesn’t seem to be the same problem in the 410c.


Because 410C didn’t use the same flash storage unit.


Then you are saying that the issue is with availability of the flash memory itself?


Yep, now it’s being resolved.


If this was the only problem with availability of the board, then how come was there no “light” version offered without UFS? As I understand it, the board is capable of booting fully off the uSD card, and this option would have helped a LOT of people get into this board despite the issues with supply of that chip. I, personally, would have bought several, and I know two other people who also would have bought a few each.


I am afraid I do not have a good answer to this. Whether to have another ‘light’ variant of original 820c is not our decision but partner’s.

Personally we would also have hoped 820c availability did not have such problem. We could only apologise as this was not what was intended for originally.



Well then do you think you could suggest it to them? I’m sure it would be more seriously considered coming from you than from me.


Actually I think just opposite…they heard me too much and it does not ripple anymore :disappointed_relieved: