Re: wireless accelerometer interest

From Wear-Hard Mailing list Archive (WH) Maintained by R. Paul McCarty

Hello Daniel,

I'd like to have at least 2 for our university group. (We have followed 
your design and like the Tayo Yuden including SPP support idea).
Please let me know if you find enough people for making a batch of these 
devices.

regards 
 Ralf

On Fri, 13 Aug 2004, Daniel L. Ashbrook wrote:

> I'm trying to gague interest in the wireless accelerometers our group
> has developed. We're investigating a production run of around 100, to be
> sold for under $100 each. Here's a variety of information about them,
> and the website where more information can be found. If you're 
> interested, please send me an email with how many you think you'd order
> when they're available. If you have a specific project in mind, a short
> description would be appreciated as well.
> 
> Thanks,
> 
> Daniel Ashbrook
> 
> 
> 
> 
> http://www.cc.gatech.edu/ccg/resources/btacc/
> 
> Overview
> 
>   This is a small wireless sensor platform providing a bluetooth SPP
>   link to three axes of accelerometer data.  The accelerometers are
>   sampled by a PIC microcontroller (onboard ADC) at roughly 100Hz
>   (rate can be changed via firmware).  Data from the ADC conversion is
>   sent to a remote computer using the PIC's UART in conjunction with a
>   drop-in bluetooth serial part.  Even with two dual-axis
>   accelerometers onboard there are up to 17 free I/O lines and two
>   additional ADC channels depending on the device configuration.
>   Three sockets provide access to all PIC signals.  Over-the-air
>   programming allows for easy firmware updates and rapid prototyping
>   without the need to have a PIC programmer or special cable.
>   Schematics, parts lists, and firmware sources are available online.
> 
> 
> Quick Feature List
>     
>     * Bluetooth serial port profile (SPP) for standardized interface
>     * 3-Axis accelerometer data, 3.9mg resolution (ADXL202JE)
>     * Reprogrammable PIC (16LF873-04I)
>     * 17 free I/O lines
>     * In-Circuit programming connector
>     * Over-the-air programming via bootloader
>     * Battery life ~60hrs on 840mAh 3.7v battery, full TX mode
>     * 13mA @ 3.7v TX mode, 3mA @ 3.7v standby
>     * Very Simple Firmware
>     * 35mm X 35mm X 5mm
> 
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> 
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> 

---------------------------------------------------------------
Dr. Ralf Ackermann            _         
Multimedia Communications |/ | | |\/|           Merckstrasse 25
                          |\ |_| |  |  64283 Darmstadt, Germany
Tel.: (+49) 6151 16-6138                Fax: (+49) 6151 16-6152
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             http://www.kom.tu-darmstadt.de/~rac
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