AVR-Chat

I'm thinking maybe the Atmel USBKey might be a good option. Little 
bigger than that thumb drive but it's got a lot of desirable features 
built in for just a few bucks. I have one ready in the basement but 
haven't played with it yet :) I'm using a Butterfly to drive a stepper 
based focuser but might switch to that USBKey.

    Sander

Mike Bronosky wrote:
>
> 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/ <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 
> <http://www.sparkfun.com/commerce/categories.php>
>
> And there is AVR Freaks at
> http://www.avrfreaks.net/ <http://www.avrfreaks.net/>
>
> Good luck,
> Mike Bronosky
>
> On Thu, Sep 4, 2008 at 8:13 PM, drgert1 <drgert1@yahoo.com 
> <mailto:drgert1%40yahoo.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 
> <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 
> <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 
> <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
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>