This is mocked up with mdf. The real deal will be made of black and white sheet HDPE sheet stock, maybe some lexan here and there…
Raspberry Pi 4 8GB (in cast aluminum armor/heatsink), Redragon 60% mechanical keyboard, corsair optical mouse, bcm and 30000mAh staged battery capacity (works out to around 8 or nine hours), and a 7" touch hdmi screen that is not connected or visible in the frame.
Of course, it will not only run off mains, it will do so simultaneously with recharging.
Firmware is updated to boot from any suitably configured USB device, and currently outfitted with raspberrypiOS+home dir each on it’s own 32GB PNY USB thumb drive.
no nonsense unpowered usb3 hub.
It’s gettin’ there :)
Up next: cellular data capability.
Oh I also have solar capability for recharging in the rough.
A word about my battery system.
I guess it’s a little obvious, but I’ve never seen anything else set up this way, and I’m particularly satisfied with how it actually works in practice.
So I have a BCM that can handle power in over usb C. it manages charge for 10000mAh of on-line capacity. In addition, I have two USB charging bricks, each 10000mAh. Both of these can be used to back up the online battery supply via the usb C.
The genius of this is, you can replace dead/dying bricks on the fly, without a power down. My on-line source is similarly cool, being made up entirely of parallel 18650s. It too would readily allow replacing depleted cells with charged cells, on the fly. The 18650 format means I can replace my batteries at any smoke/vape shop. This is what I like to call ubiquity.
In the city, where I live, anyway. I can’t go three blocks in any direction without encountering a store that sells these cells ;)
All this should work fairly well with a bit of solar or wind recharging capability.
The only situation that would force a shutdown is depleting all your cells before you could recharge more. At this point, it’s all about making sure you can recharge what you have quicker than you can use it up ;)