开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

zBitx Battery for real time clock missing


 

After my first successful FT8 QSOs with the zBitx, I switched it off.
When I later switched it on again in FT8 mode, I was surprised, that I did not have any FT8 decodes, although I could clearly hear and see the FT8 signals.
Connecting a monitor showed, that the time was off, i.e. the real time clock obviously does not work.
?
I opened my zBitx (very nice concept of 3D printed parts for the case!) and took a picture of the mainboard:
?
?
There is a 2 pin connector next to the RTC DS3231, which I guess is J7 from the schematics.
Most probably this should be connected to a battery, but there is none!?
Has this been an oversight during assembly and if yes, will a CMOS BIOS backup battery work?
--
73, Joerg - DB2OO


 

Mike has a battery right under the Pi.?
On Apr 10, 2025 at 6:37?PM -0400, Joerg DB2OO via groups.io <db2oo.ju@...>, wrote:

After my first successful FT8 QSOs with the zBitx, I switched it off.
When I later switched it on again in FT8 mode, I was surprised, that I did not have any FT8 decodes, although I could clearly hear and see the FT8 signals.
Connecting a monitor showed, that the time was off, i.e. the real time clock obviously does not work.
?
I opened my zBitx (very nice concept of 3D printed parts for the case!) and took a picture of the mainboard:
?
<zBitx-Mainboard-J7.jpg>
?
There is a 2 pin connector next to the RTC DS3231, which I guess is J7 from the schematics.
Most probably this should be connected to a battery, but there is none!?
Has this been an oversight during assembly and if yes, will a CMOS BIOS backup battery work?
--
73, Joerg - DB2OO


 

开云体育

Hopefully this is all the OP needs...

?

Ken

On Apr 10, 2025, at 18:07, Astro-Nights with Mike Christiansen via groups.io <starmke1998@...> wrote:

Mine has a battery right under the Pi.?


 

开云体育

Oh, rechargeable! ?Nice!

? ? ?Frank Krozel
? ? ? ? ? ?KG9H
Life Member, ARRL
? ? (630) 924-1600
kg9hfrank@...



--
?
?
?
de KG9H
Life member, ARRL


 

Joerg,

?
Thanks for bring this to our attention. Can you send us an email at support at hfsignals dot com with your order details and any hi-resolution photos of the board? I'm attaching photos of the RTC battery for your reference.
?
73,
Ragav
VU3VWR