What is the purpose of the Rainbowduino USB/HOST switch?

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tominohio
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What is the purpose of the Rainbowduino USB/HOST switch?

Post by tominohio » Thu Jun 20, 2013 1:55 am

Hello,

I received my Rainbowduino last week and am excited to use it. I intend to connect it via USB to upload sketches, then disconnect USB and use a DC adapter to power the device in another room.

What is the purpose of the USB/HOST switch? If I leave it on "USB" but connect a DC power supply to the on-board 2.1mm barrel connector, will that cause trouble?

Lastly, is the tip on the on-board DC barrel connector positive or negative?

Thank you for any help that you can provide,
Tom

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Jacket Chen
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Re: What is the purpose of the Rainbowduino USB/HOST switch?

Post by Jacket Chen » Mon Jun 24, 2013 11:32 am

hey , if you turn the switch to USB mode, you can program Rainbowduino via USB port. And if you turn the switch to HOST mode , you can use Rainbowduino as a UartSBee.

As for the DC connector , you can find a logo on the back of the Rainbowduino , and you can see the inside of connector (column) is positive , and the outside of connector is negative
Love little, love long.

tominohio
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Re: What is the purpose of the Rainbowduino USB/HOST switch?

Post by tominohio » Mon Jun 24, 2013 11:12 pm

Thanks for the reply and helpful information. I already mounted my Rainbowduino in an enclosure, so it was not easy to look at the bottom of the board. :)

If I have the switch on "USB mode", can I connect a DC 6.5-9V power supply to the DC jack without damaging anything, as an alternate power source instead of USB?

Thanks again for your help,
Tom

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