I do believe you are correct, everything is surface mount. Its also the reason, as I understand it, why the GPIO header is not pre soldered. That requires an extra step. And is why the Zero W with pre soldered header costs more.W. H. Heydt wrote: ↑Tue May 29, 2018 6:33 pmAs I understand it, the reason for the choice of the mini-HDMI connector was because it still permits soldering on only one side of the board, and that is critical to holding down manufacturing cost. The A+ (and, presumably, a Pi3A+) would not have that constraint.bensimmo wrote: ↑Tue May 29, 2018 6:25 pmFull size, what's the point in that, I have loads of micro connectors for hdmi and usb. You don't even need the adaptors now.
It's a pain to have to buy mini HDMI ones for the Zero's, give micro is smaller and Android tablet sized. But I have loads of the adaptors as they always came with my Zeros on MagPi subscriptions, lol.
Go small and stay small on the A+ series now it's competing with Zero for compactness.
Use the room to get the 802.11ac WiFi module and antenna on there and to create more compact setups.
The cases I use for A+ Pis have enough room that a Pi3A+ should fit. To answer the question actually posed...no, because no one (outside of the RPT, at least) has a Pi3A+ to verify that a case for one will work.
The statement was that a zero sized board did not have enough size for TDP. The A+ size must work as they supposedly have already built a prototype. That was in a post about getting a Pi 3 Zero from the foundation.W. H. Heydt wrote: ↑Sat Jun 02, 2018 11:31 pmThe cases I use for A+ Pis have enough room that a Pi3A+ should fit. To answer the question actually posed...no, because no one (outside of the RPT, at least) has a Pi3A+ to verify that a case for one will work.
To address another point that seems to be coming up (without adding another post)... If the A+ sized board doesn't provide enough heat dissipation, a Pi3A+ could be down clocked slightly to reduce TDP. Say, capping the default at 1.2GHz instead of 1.4GHz. It would still be a far more "powerful" board than the A+. The lack of the LAN chip (and the associated thermal load) might not make that necessary, though.
Yeah...a Pi0-3 just isn't going to happen. The parts and manufacturing cost would go far to high for the target price. Ultimately, I think that's going to be a problem as the Pi0/Pi0W may wind up as the only Pi "product line" that can't run a 64-bit OS. Not going to be a problem in the near term, but 10 years down the road, I think there's going to have to be a 64-bit capable version.
I don't see that as a problem for a Pi3A+. Like the Pi3B/Pi3B+ (and the Pi2B versions, for that matter), the RAM can go on the other side of the board. The Pi0/Pi0W can't do that and keep the price the same.Yes clocking it down is a solve. I am sure they thought of that too. TDP is probably not the only problem on a zero size. Adding W to the Zero probably made that even worse. Routing lines for the off package memory is probably part of it too.
The PiBow cases fit rather exactly and a Pi3B case can't hold a Pi3B+ board. They had to make a case modification. If there is a comparable A+ case, it would have to be redesigned, not just because the the SoC package is taller, but to accommodate the WiFi shield and the memory package on the bottom. But any case that doesn't try to be an exact fit should be fine.I would think that any of the current A+ cases could work, as long as it has similar connectors and positions. If it doesn't, then none of the current cases work. But the Foundation is pretty good at, and about, trying to keep those connectors where people expect them. That also keeps the after market happy as they do not have to redesign for every single board that comes out.
Only for some uses, but I take your intent. A Pi3A+ would erase that, though, because you would no longer be constrained by the BCM2835 limitations. (At least, not all of them.) Project designers could then deal with tradeoffs of how much memory/CPU performance the project calls for as balanced against board size and power requirements. That should make for a healthy market for both boards. At least until the BCM2835 is considered to old and slow to be viable even on a Pi0/Pi0W. (I have at times put forward a possible path to upgrade the Pi0/Pi0W, but I will readily concede that I can't think of a way to make the economics work short of a financial "angel" who comes in and pays for the up-front costs which would most likely run to 7 or 8 figures.)
One presumes that OTG would work the same way it does on the A+, you can be either a bus master or a bus slave. You can't select dynamically the way a Pi0/Pi0W can because the full size USB-A lacks the extra connector to detect which mode should be used.
It depends on the case. the one I use are sufficiently transparent that LED location isn't a factor. Likewise, I think they have enough space under the board so that having the RAM on the bottom wouldn't cause any problems. They certainly have enough room over the top of the PCB so that the added height of the BCM2837B0 wouldn't be an issue, and the same applies to the Pi3B+ type WiFi shield.Some case adjustment have been needed for new models, especially LED moves. Plus the memory module.