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Z-Uno Full electronic diagram

Posted: 05 Jun 2021 20:53
by fredfit
Hi all,
Is there a full electronic diagram of the Z-Uno available somewhere ?
I'm trying to find the value of C13 which is the very small SMD capacitor close to the antenna.
I unfortunately removed it accidentely while desoldering the antenna and I lost it.
Thanks !

Re: Z-Uno Full electronic diagram

Posted: 06 Jun 2021 02:25
by PoltoS
12 pF

Re: Z-Uno Full electronic diagram

Posted: 06 Jun 2021 09:54
by fredfit
Thank you PoltoS.
Very low value for a capacitor. Is it a coupling capacitor between the antenna and the rest of the RF circuit ?
Can I replace it by just a short circuit ? Because it's very very tiny and it would be hard to solder an new one in place.

Re: Z-Uno Full electronic diagram

Posted: 07 Jun 2021 01:54
by PoltoS
It is the antenna matching. If you use another value the matching will be wrong. Better not to use it rather than use 0 Ohm.

Re: Z-Uno Full electronic diagram

Posted: 07 Jun 2021 11:20
by fredfit
Ok thanks
Just one last question: do you confirm the SMD size of 0402 ?

Re: Z-Uno Full electronic diagram

Posted: 11 Jun 2021 01:35
by PoltoS
Yes