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Author Topic: A13 schematic  (Read 1854 times)

oldpenguin

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A13 schematic
« on: June 20, 2013, 08:28:32 PM »
Hello all

I received two new A13-olinuxino WiFi boards.
The pcb is identified as Rev.E
Cannot find the schematic for this version. The only one available is for Rev.C
What are the differences ?
Can you put the new schematic on github ?
I noticed there is are some pads near the RTC with "+3.0V_BAT" and "GND" labels.
Can they be used to keep the rtc alive when the board ispowered off ?

Regards

Antonio

olimex

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Re: A13 schematic
« Reply #1 on: June 21, 2013, 09:10:23 AM »
you are right, I updated REV.E on Github
generally after Rev.C there are just cosmetic changes - moving some components on more convenient places and changes on silkscreen but nothing related to the schematic

oldpenguin

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Re: A13 schematic
« Reply #2 on: June 21, 2013, 12:25:51 PM »
Humm....
You might consider it a cosmetic change...
But to me this is a very important functional change. You have added blocking diodes and a connector footprint to the rtc vbat. This means that I can connect a 3V lithium battery to the board the keep the time instead of having to use the cumbersome UEXT rtc module !
Thank you !
This change is very useful to me.

...Is there any other change I might have not noticed ?

Regards

Antonio