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Topic: stalker 2 pin usb5v (Read 603 times) previous topic - next topic

cantore

Hello. If i supply my seeeduino stalker2 from the solar pin with 5v I only obtain 3.3v on the USB5V pin. If i supply from the usb adapter I obtain 5v. Is there a way to obtain always 5v on USB5V pin also if I am supply the system with the solar socket? Thanks

James C4S

Can you provide links to whatever devices you are asking about?
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

Chagrin

http://www.seeedstudio.com/depot/seeeduino-stalker-v2b-p-727.html
   or
http://garden.seeedstudio.com/index.php?title=File:Stalker_v2.0_Schematics.png

As to your question if you can get 5V when feeding the solar socket, no. The datasheet for the charge IC (CN3083) is in Chinese but appears to have a limit of 6V in, and with your 1.7V dropout you cannot get 5V.

cantore

I have try to measure a voltage between a digital pin (es4) and GND after have done:
digitalWrite(4, HIGH);
In both cases (supply by usb or solar socket) I measure 3.3v. Is it possible they put on market something is only mechanical but non elettrically compatible with arduino?

James C4S

Since this is a Seeedstudio product, have you tried posting a question in their forum?

http://www.seeedstudio.com/forum/
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

cantore

Yes and they answered me stalker 2 only works at 3.3V. I am very disappointed because on their website they said "compatible with arduino" and not "only mechanically compatible withj arduino".

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