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Author Topic: stalker 2 pin usb5v  (Read 581 times)
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italy
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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
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Austin, TX
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Can you provide links to whatever devices you are asking about?
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Dubuque, Iowa, USA
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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.
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italy
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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?
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Austin, TX
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Since this is a Seeedstudio product, have you tried posting a question in their forum?

http://www.seeedstudio.com/forum/
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italy
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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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