On 9/14/23 21:27, Brian K. White wrote:
But somehow there is power differential between gnd and vmem (or
whatever the positive side of the big cap is, I say vmem because
obviously it powers the sram) on the rexcpm, and 0.7uA of current
flowing along RAM_RST.
7uA not 0.7uA!
--
bkw
also the updated design is visible here
https://github.com/bkw777/REXCPM_UPS
The schematic now also documents which pins are which on the rexcpm too
just for convenience & reference.
You *could* got ahead and export gerbers and order boards right now
without waiting. But I have a set on the
Yes to most of your understanding, not yet on the 4-cell test.
I just ordered the pcb's yesterday so it'll be about a week.
Although there is not much to actually test about the updated board.
It's just more of the same. It's the same circuit. All it changes is
adding more celles and a ground
Yes to most of your understanding, not yet on the 4-cell test.
I just ordered the pcb's yesterday so it'll be about a week.
Although there is not much to actually test about the updated board.
It's just more of the same. It's the same circuit. All it changes is
adding more celles and a ground
Great work! To make sure I’m following - the REXCPM relies on having a ground
path through the socket, so the idea is to swap out the 3-wire JST connection
for a 4-wire version, which adds the ground pin... And you’re saying the only
reason it works outside the unit right now without the ground
