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Bylund opened this issue Mar 6, 2020 · 6 comments
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Uno WiFI Rev 2 - Tech Specs - Input voltage limit [TC-330] #368

Bylund opened this issue Mar 6, 2020 · 6 comments
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@lunnea
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bug Something isn't working community Bugs and fixes suggested by the community Product page

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@Bylund
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Bylund commented Mar 6, 2020 •
edited by per1234
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https://store.arduino.cc/arduino-uno-wifi-rev2

Hi, according to the Arduino Uno WIFI Rev 2 tech specs the upper input voltage limit is 12V. Compared to other boards this seem low. According to the schematics it is using a MPM3610 step-down converter capable of up to 21V input. I am guessing the actual Input Voltage (limit) should be 6-20V like the other UNO's?
@Bylund Bylund changed the title label:"Component: Documentation" Uno WiFI Rev 2 - Tech Specs - Input voltage limit Uno WiFI Rev 2 - Tech Specs - Input voltage limit Mar 6, 2020
@dushyant18033
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Hi, I checked out the datasheet for MPM3610. But there is a table on page 16 of the datasheet which gives the various component specifications to be followed in the power circuit for a particular limit of Vin, which gives some hint that maybe Uno Wifi Rev2 is using the specifications for Vin=12V probably because MPM3610 works much more efficiently for Vin limit of 12V (checkout the typical characteristics starting at page 5 for more information).
So probably the tech-specs on the website is correct in my opinion. Please verify with the schematic for component values used for Vin=12V.

@alranel
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alranel commented Jun 10, 2020

Hello @Bylund. Sorry for the delay! We double checked and you're right: the recommended input voltage for the Arduino Uno Wifi Rev2 is 6-20V. We recommend not to power boards at their maximum voltage because many power supplies can be unreliable and give overshoots, so better to keep some margin.
We will have the spec fixed on the website as well. Thank you for reporting this.

@Bylund
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Bylund commented Nov 29, 2020

Hello @alranel. Thank you for the update. We wanted to recommend using the Uno WIFI Rev 2 in automotive applications up to 15V, now we can. Note that as of today there are still no updates to the Uno WIFI Rev 2 spec on the Arduino website.

@Bylund Bylund closed this as completed Nov 29, 2020
@per1234
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per1234 commented Nov 29, 2020

Hi @Bylund. I hope you won't mind if I reopen this. As you pointed out, the tech specs have not yet been updated as planned, so I think it's best to keep this open so it isn't forgotten.

@per1234 per1234 reopened this Nov 29, 2020
@per1234
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per1234 commented Jul 17, 2022

Note to the assignee: please make sure any update is made to all occurrences of the information:

@per1234 per1234 transferred this issue from arduino/Arduino Jul 17, 2022
@per1234 per1234 added bug Something isn't working Product page community Bugs and fixes suggested by the community labels Jul 17, 2022
@jhansson-ard jhansson-ard changed the title Uno WiFI Rev 2 - Tech Specs - Input voltage limit Uno WiFI Rev 2 - Tech Specs - Input voltage limit [TC-330] Jul 18, 2022
karlsoderby added a commit that referenced this issue Jul 29, 2022
@karlsoderby
Update tech specs Uno WiFi rev 2
b0f2b47 
Addressing issue #368, incorrect input voltage for UNO WiFi Rev 2
@karlsoderby karlsoderby mentioned this issue Jul 29, 2022
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Hi @Bylund this issue has now been adressed via (#434). Sorry for the long delay!

@per1234 I have also opened a request to the store team to update the page.

Serjlee pushed a commit that referenced this issue Mar 9, 2023
@TaddyHC
Initial commit - Tutorial content update (Retesting) (#368)
63bb1ca
jcarolinares added a commit that referenced this issue Mar 9, 2023
@ArduinoBot @martab1994
@Jorgetrujilloroman @jcarolinares @aliphys @TaddyHC @marqdevx
Post-launch Portenta X8 Redefinition 09-03-23 (#897)
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Co-authored-by: Jorge Trujillo <[email protected]>
Co-authored-by: Jorge Trujillo Román <[email protected]>
Co-authored-by: jcarolinares <[email protected]>
Co-authored-by: aliphys <[email protected]>

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Co-authored-by: Julián Caro Linares <[email protected]>

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Co-authored-by: Julián Caro Linares <[email protected]>

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Co-authored-by: martab1994 <[email protected]>
Co-authored-by: Jorge Trujillo <[email protected]>
Co-authored-by: Jorge Trujillo Román <[email protected]>
Co-authored-by: jcarolinares <[email protected]>
Co-authored-by: aliphys <[email protected]>
Co-authored-by: TaddyHC <[email protected]>
Co-authored-by: Pablo Marquínez Ferrándiz <[email protected]>
Co-authored-by: TaddyHC <[email protected]>
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