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Permalink Reply by Xander on February 4, 2010 at 12:05am

The arduino hardware and software are open source. Anyone can make their own or remix it. The Ardupilot is a slightly modified arduino. Seeedstudio and Sparkfun sell Arduino clones (as do other sites, I believe)

The arduino name is not free to use, hence the clones having various other names.

I like seeedstudio. They're cheap, pre-assembled, and add some extra features.

Newer arduinos (and clones) have a 328 chip replacing the old 168 chip. Does the same thing, just twice the memory. Not necessary to get started, but useful for larger projects.

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Permalink Reply by Gregg "Cabe" Bond on February 4, 2010 at 11:22am

http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscope...

"oh my!"

I wonder if 1MHz of bandwidth is enough to see servo pulses. My brain cant work the maths.

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Permalink Reply by Xander on February 4, 2010 at 11:43pm

Easily. A typical servo signal is 1ms-2ms at 50Hz. At 1Mhz this oscilloscope would sample 1000 times during a 1ms pulse.

An arduino can see servo pulses too though.

And actually, there are ways to use your computer as an oscilloscope by using your microphone jack as an ADC...

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Permalink Reply by Jeffrey Torella on February 4, 2010 at 12:08am

have you seen this one it also claims to be an arduino clone........ http://spiffie.org/kits/iduino/ iduino

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Permalink Reply by Xander on February 4, 2010 at 12:36am

Yeah, pretty sure that one will run the same code too.

Note that there are software compatible clones, and hardware compatible clones. The difference being that the latter have exactly the same female pin layout as the arduino, meaning they can have arduino shields plugged directly into them. That iduino, for example, can not directly accommodate expansion shields. It'll still run any code designed for an arduino though.

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ModeratorPermalink Reply by Thomas J Coyle III on February 4, 2010 at 5:35am

Alex,

Try this website: www.nkcelectronics.com/arduino.html

I am building an Aeroquad quadrarotor and I purchased my Seeeduino 328 and Mega and my Arduino Mega here while they were on sale. They also sell the Freedino pwb and full kit so you can save money making your own "Arduino".

Regards,
TCIII

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ModeratorPermalink Reply by Alex on February 7, 2010 at 2:07am

Thanks for your replies,
I already have an arduino board and have been using it for a few months on my own projects aswell as the ardupilot board, But i just came across that website when looking for some examples of interfacing with some hardware and was wondering why the freeduino was any differant. But now i konw why :)
Thanks.
Alex

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