So many things can go wrong, for sure it is always
good to be able to swap HC and mainboard for faster diagnostics.
Thinking about this, the simplest way to produce this symptom (HC
tries to connect and reboots after a while) is to plug in the HC
cable into the wrong serial port with different bit rate
settings...
So the Ethernet test may help, but not sufficiently for all
possible reasons.
¸é±ð²Ô¨¦
Am 20.04.25 um 18:13 schrieb Mtn Goat
via groups.io:
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The ability to operate Gemini via Ethernet does not
prove the Gemini is good. The buffer circuit in Gemini for the
HC could still be bad.
Helpful if someone could loan their HC to Jay for
testing?
On Apr 20, 2025, at 10:00?AM, Chip Louie
via groups.io <chiplouie@...> wrote:
?
[Edited Message Follows]
[Reason: Additional information ]
On Sun, Apr 20, 2025 at 06:26 AM, Jay Freeman wrote:
In January I retrofitted my old G-11 to Gemini 2. The
Gemini 2 worked the first two times I had it out but
tonight it failed during startup. It made it past
recognizing the (Losmandy's) GPS unit but hung when I
pushed "Next". On turning the power switch off and back
on, it made it past initializing the hand controller,
but after a few seconds of trying to connect to the
gemini, the controller screen went black, and then the
colored start-up screen appeared, just as if I had
cycled power.
?
This behavior repeats indefinitely no matter what I
do -- initialize, fail to connect to Gemini, back to
start-up screen, repeat ...
?
I have turned the Gemini power switch off and on many
times and also disconnected and reconnected the battery
many times. I have tried three different batteries and
two different power cords. I also disconnected and
reconnected all cables many times, and tried it without
the GPS unit connected. No luck.
?
I have not yet opened either case for any purpose:
The unit has the same internal battery, the same SD
cards (thus far un-reseated by me) and the same software
as when Losmandy delivered it.
?
I thought I should ask advice before I proceeded
further. Any suggestions?
?
?
Open the case up and remove and reseat the micro SD
card.? Power up and see if the Gemini boots normally.? If it
does not contact Losmandy on Monday you may have a bad micro
SD card.??
?
Oh,. I forgot to ask as it seems like a long shot but can
you talk to the Gemini using the Ethernet port?? If so this
would mostly isolate the issue to the HC and cable.??
?
--
Chip
Louie Chief Daydreamer Imagination Hardware?
Astrospheric - South Pasadena, CA?
