On Sat, 15 Feb 2020 09:21:14 -0600, Richard Owlett 
declaimed the following:

>
>Too big. Even the nominal 7" display is uncomfortably large.
>I'll look for a 3rd party display that wil fit in pocket comfortably.
>
 By the time you've fit a case, battery, and display on this thing, it
isn't going to fit anything smaller than a "cargo pocket" on a pair of
pants, or a large coat pocket.

 An R-Pi 3B+, no battery, no display, but in a case, takes up 3.75 x
2.625 x 1.125 inches -- and that is with sharp corners to the case.

 My ancient HP PDA with a double-thick extended battery is 4.625 x 3 x
1.125 (regular battery makes it only 0.75 thick) -- and never did fit in
pockets for me; I carried it in a zipper closure leather case which also
held 3x5 business cards and spare stylus. Oh, and it has smoothly rounded
edges to reduce wear in whatever pockets one places it.

 Much of the thickness comes from the USB and Ethernet ports. If you rip
off those, and the GPIO expansion header, the rest of the R-Pi 3B+ (without
case) is less than 0.5 inches (much of that being the HDMI and audio jack).

 You'll need to rig a low-voltage shutdown trigger to safely shut it off
when the battery goes low, to avoid corrupting the file system. Linux does
not like having the power dropped on R/W file systems. My PDA was good for
about three days of usage with standby with the thick battery -- and that
was with a reported PXA27x Intel xScale core running at a sluggish 624MHz.


--
 Wulfraed                 Dennis Lee Bieber         AF6VN
 wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

--- SoupGate-Win32 v1.05