So my beloved logic analyser with the network card died yesterday.
Looks like the DS1387 chips battery has failed.
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Re: Logic Analyser Died
Posted: 10 May 2019 09:31
by stephen_usher
That's annoying. How easy are those particular DS units to find? Some of the older ones are still available but the newer ones discontinued (a problem for those trying to keep Sun Ultra workstations running, but older SPARCstations are just fine as the 42T02 is still in manufacture).
Given how often these units run out of battery I'd put a socket in it. (But generally I always do if I'm desoldering a chip.)
Re: Logic Analyser Died
Posted: 10 May 2019 12:18
by terriblefire
I’m not a fan of sockets. They’re v unreliable but in this case it’s warranted. Usually I just solder a new one in.
I’m planning to rework the DS1387 and install a coin battery then reflash with an arduino nano
Re: Logic Analyser Died
Posted: 10 May 2019 15:36
by alenppc
Those Dallas battery packs are horrible, they were used in the old cheap PC motherboards also. I am surprised they cheaped out on something like that. Your logic analyzer is running on 68030? Amazing.
Re: Logic Analyser Died
Posted: 10 May 2019 16:41
by terriblefire
It’s a 68EC020RP25...
Yeah I’d like a more robust solution long term
Re: Logic Analyser Died
Posted: 10 May 2019 19:52
by terriblefire
A bit of tidy drilling if I do say so myself
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Oddly the voltage is still about 3.0V but the current date/time was lost
Re: Logic Analyser Died
Posted: 12 May 2019 08:33
by terriblefire
And i managed to kill the arduino that i was using to reprogram the chip.
Re: Logic Analyser Died
Posted: 12 May 2019 11:00
by stephen_usher
OK, so what's the third thing to go wrong?
Re: Logic Analyser Died
Posted: 12 May 2019 13:51
by kludge
stephen_usher wrote: 12 May 2019 11:00
OK, so what's the third thing to go wrong?