Stalker Digital Output Voltage

Arduino, Seeeduino Serials and mutants. Share your problems and experence on arduino compatible board such as seeeduino/stalker, etc.

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CRS2010
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Stalker Digital Output Voltage

Post by CRS2010 » Mon Jun 28, 2010 10:35 am

I measured the output voltage from the digital outputs of a Stalker and they measure about 3 volts using both the USB interface card and using an external power supply. Is 3 volts the expected output voltage? I checked the output voltage of a Arduino and it outputs 5 volts. If the 3 volt output is normal, is there a easy way to up the voltage to 5 volts?

Thanks

Icing
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Re: Stalker Digital Output Voltage

Post by Icing » Mon Jun 28, 2010 3:11 pm

Hi CRS2010,
I measured the output voltage from the digital outputs of a Stalker and they measure about 3 volts using both the USB interface card and using an external power supply. Is 3 volts the expected output voltage?
Yes, to be compatible with the working voltage of xBee and MicroSD card, the mcu of stalker is designed working at 3.3v, so as the i/o.
I checked the output voltage of a Arduino and it outputs 5 volts. If the 3 volt output is normal, is there a easy way to up the voltage to 5 volts?
You may need to use transistors to change the voltage. Refer to this:
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CRS2010
Pre-kindergarten
Pre-kindergarten
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Joined: Fri Apr 30, 2010 7:03 am

Re: Stalker Digital Output Voltage

Post by CRS2010 » Mon Jun 28, 2010 9:03 pm

Icing,

Thanks for the reply. I thought the 3.3 volts was right but was not sure if it was switchable.

I will give the transistors a try and let you know how it works. I have a couple of 2n2222 transistors on hand so I will give them a try.

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