Re: [avr-chat] AVR and accelarometers

[Clemens Koller]

nautilussoftware schrieb:
> hello; I am interested in connecting several accelerometers to an atmel
> and maybe using a processor that supports USB. I found an accelerometer
> that uses SPI bus. how hard would it be to design the interface to the
> part if anyone could ballpark it.

Several AVRs support SPI just fine.
I'm using an Accelerometer on an ATmega168' I2C Bus, because I need the
SPI for something else. In my case it's a ST LIS3L02DQ.
Which can speak SPI as well as I2C.

> I have not done electrical design in a
> while. So I was thinking of getting a development kit for the AVR. is
> there an inexpensive kit that will do usb around?

I got a sample of http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3879
If you buy it, it'll take your about US$32.-
It already comes with example code for several USB Enpoints (UMS, HID, CC) and
a little Windows Demo application as an appetizer.

> this was the chip I
> found but I did not know where the price was.
> 
http://www.vti.fi/en/products-solutions/products/accelerometers/sca3000-accelerometers/

Seems to work.

> I would be willing to barter also some software engineering time for
> some electrical design or board layout. I have 20 years in software.

Business stuff is off-topic here. So, no offer from me. ;-)

Regards,

Clemens Koller
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