[time-nuts] Ublox 8T - breakout board
gandalfg8 at aol.com
gandalfg8 at aol.com
Tue Dec 15 14:25:56 UTC 2020
Hi Mathias,
I'm assuming you're using a coin cell for back up, so wondering if one of the diodes shouldn't be in series with the battery, with both cathodes to V_BCKP?
Nigel GM8PZR
I've updated the repository on github with the latest design files. The
breakout board is now final as far as I'm concerned.
I managed to implement all the requested features, this includes the backup
battery and also the buffered PPS output with SMA footprint.
Next step on my side will be to order a small batch of PCBs. There's not much
on them and I guess I will end up with around 25? for 5 boards fully
assembled, shipping not included.
I eventually removed the I2C pull-ups again, thanks to Patrick Tudor for the
hint. The footprints are still there, I only removed them from the BOM.
Schematic and a screenshot of the top and bottom sides attached.
BR,
Matthias
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