AVR-Chat

Seams like size is your problem. You might try these.

You might in touch with Joe Pardue the owner of Smiley Micros at
http://www.smileymicros.com/
If Joe doesn't have what you want/need he may be interested in developing it
with you for his one shelf.

Another place is SparkFun Electronics at
http://www.sparkfun.com/commerce/categories.php

And there is AVR Freaks at
http://www.avrfreaks.net/

Good luck,
Mike Bronosky


On Thu, Sep 4, 2008 at 8:13 PM, drgert1 <drgert1@yahoo.com> wrote:

>   Hi All,
>
> I just joined the group.
>
> My background is from amateur astronomy. Stuff like this:
> http://www.trivalleystargazers.org/gert/mercury_transit2006/image_04.jpg
>
> I control most of my telescope stuff and imaging equipment from the
> laptop via USB & serial.
>
> When I'm mobile I use batteries to power the equipment.
>
> Now what has that todo with AVR? I am looking for some data gathering
> via USB. I am interested in voltage measurements to monitor my
> batteries and weather data. (Temperature and dewpoint would be nice)
> There's a nice sensor for this:
>
>
> http://www.sensirion.com/en/01_humidity_sensors/06_humidity_sensor_sht75.htm
>
> All I need is a USB based little blob with an MCU inside to get the
> data from sensor or via ADC and send it to the PC. A little program on
> the PC would display the data. There are AVR devices that have pretty
> good spec like built in USB and ADC. (like ATmega16U4, AT90USB162 etc)
>
> There is this eval board:
>
> http://www.digikey.com/scripts/us/dksus.dll?Detail?name=AT90USBKEY-ND
>
> But I think it's too big and clumsy. With USB integrated into the mcu
> the whole thing should almost fit into the USB plug. Just have the
> wires to the battery sticking out. (This boad is my fallback position
> however if nothing else materializes)
>
> I am looking for something the size of a USB flash stick. Preferably
> ready made as an eval system for the MCU. Attaching the sensor and
> input for voltage measurements should be easy. I would not like to
> make my own pcb.
>
> Any ideas are appreciated.
>
> Thanks,
> Gert
>
>  
>


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