TT030 Clock Batterie

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enito
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TT030 Clock Batterie

Post by enito »

Hi there,

I replaced the old not functional bat with a CR2032 socket and bat. Now for test if this real works, whats tool can use for setup clock? need to clean the nvram? Regards!!!
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stephen_usher
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Re: TT030 Clock Batterie

Post by stephen_usher »

The TT’s clock battery is 6 volt and not 3 volt so the CR2032 won’t run it correctly.

It’s better to get a 4xAAA battery holder and solder the original leads to it making sure that you have the correct polarity.

I’ll post a picture on mine later.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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Icky
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Re: TT030 Clock Batterie

Post by Icky »

I thought the original TT battery was a Tadiran TL-5242/W, 3.6V Lithium

EDIT: Just checked my TT and I had indeed replaced the original with a 3.6V which has been working fine

I used one of these cheap Xeno batteries and just swapped the connector to match the TT.

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stephen_usher
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Re: TT030 Clock Batterie

Post by stephen_usher »

Do some have 3.6V and others 6V? My TT's original battery was most definitely 6V.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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Icky
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Re: TT030 Clock Batterie

Post by Icky »

@stephen_usher it seems the RTC chip is rated at 3V - 6V.
enito
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Re: TT030 Clock Batterie

Post by enito »

Perfect thx for the tips I think is my problema CR I get 3.2v and I need 3.6v . The original one is a Aa rated 3.6v now what tool you use for adjust clock time ? And with the bat can power the internal speaker ? This one is not get sound. I tested the speaker with a Little aa bat in positive and negative and I get sound. Regsrds
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frank.lukas
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Re: TT030 Clock Batterie

Post by frank.lukas »

Older ATARI TT have a 6V Battery (PGA CPU) and newer with SMD CPU have a 3,6V Battery ...
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stephen_usher
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Re: TT030 Clock Batterie

Post by stephen_usher »

The speaker doesn't need the battery in there but you may have lost the volume setting in the NVRAM.

I just set the clock using XCONTROL.ACC as you would on an ST.

By the way, this is what my battery pack looks like:

IMG_2455.jpg
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Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
enito
Posts: 8
Joined: Sun Sep 05, 2021 5:39 am

Re: TT030 Clock Batterie

Post by enito »

Nice adapter but with 3xaa bat is like 4.5v mine is apparently 3.6v. I tried to use xcontrol the volume is right but the weird stuff if itry to change time I can enter the new time but can't escape from this , the only way is power off. I try to make a video for show . Regards
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stephen_usher
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Re: TT030 Clock Batterie

Post by stephen_usher »

As noted earlier, the clock chip can handle 3.6V - 6V so they're both fine.

My one is actually 4xAAA batteries, so 6V, as was my original lithium battery pack.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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