One interesting thing we noticed is that it's about 4x6 inches, almost an inch thick (you can do the estimation yourself knowing the screen is 3.2 inches diagonal). I think many users will be surprised by the sheer size of the device. It's certainly not pocketable.
Probably still pocketable from the size, only the thickness may get annoying. I'm mostly worried about the Alkaline batteries. From my research into the topic, they will either need a pretty sophisticated power circuit and (super?)capacitors to absorb power spikes and such, to prevent killing the battery charge in a few minutes of power-on time. Or drastically reduce power usage e.g. by killing backlight, having (AS)ICs to accelerate certain things at minimal power usage.
I am quite flattered by Coldcard's new direction; it certainly seems like a direct response to our 2021 Passport Founder's Edition.
They are even repeating the exact same mistake you did with triple A batteries, and that back design for Q1 is really ugly in my opinnion.
I am almost certain we are going to see ColdCard Q2 after this, that will have similar batteries like you are using in current Passport device
I would be honestly surprised if they actually run into the same issue, where only special and expensive Lithium (not Lithium-Ion) non-rechargeable AA's are required.
I'm pretty satisfied with the Nokia BL-5C battery. It holds a long time and you can get replacements very easily.
Does anyone make their own camera modules? There was actually a discussion here a while ago about that and vulnerabilities with them.
You want a camera module without IC on it and process the raw picture data in the open-source software. Instead, it seems like Q1 uses a 'self-contained' QR module with IC and software that does all the decoding and only returns the decoded data to the main SoC.
It's $59 cheaper than passport HW wallet. But since Coinkite store mention "Batteries & USB cable not included", passport has better offer for those who consider cost of 3x AAA battery.
In case that Lithium batteries are needed, those are over 10 bucks a pack
[1], every time. That adds up over time, indeed.
It is actually not cheaper than Passport, when it was in pre-order phase, too. It came with one Industrial microSD card and two microSD adapters (Lightning and USB-C).
Pricing & Discounts
During the preorder phase, Batch 2 was priced at $199 (without VAT or shipping).
We need to progress past triple A's I think, and establish a slightly better, at least bigger capacity battery. I've used 18650s for a lot of things, and they function decently well for most things. Aren't as common as your double A's, and triple A's though. However, they aren't some specialised hardware, and can be picked up relatively cheaply, and easily from a variety of places.
18650 is definitely a good idea; Li-Ion and common to find anywhere. Only downside is the cylindrical and large shape. But I guess it may be possible to accommodate for it in a device with Q1's (or Passport's) thickness, especially since you only need one. However, it may be overkill in capacity compared to a Nokia BL-5C, which is also slimmer and lighter.
As for the cable, I would like them to give you 2 cables. One with the data wires and one without. This way if your batteries are dead you always have a cable around that can power it by plugging it into anything without worry. Minor point but it would be nice.
Even better: remove data contacts from the PCB..
[1]
https://www.amazon.com/Energizer-Lithium-Battery-Longest-lasting-Leak-proof/dp/B071CNQ3TG