Prev: C18 Compiler again
Next: Need help on getting the original source code of eZ430 Chronos
From: emanuel_ovidiu on 7 Jun 2010 09:11
For my bachelor project i need a device capable of collecting data from
sensors and transmit it through a 802.11b transceiver to a pc. I've worked
until now only with software high and low-end programming but never with
hardware ; I've started reading and looking through tons of stuff but I
failed at finding a small factor , max 5cm x 5cm board with an mcu , power
regulator (as the device has to work with batteries and be as mobile as
possible). A solutions as MotionBee would have been perfect but i need the
rf transceiver to work with 802.11b standard so that it would communicate
with normal wireless routers not only with 802.15.4 ones . A SoC would be
perfect and if it had an LCD controller even better but thats optional; the
3 sensors when in use are having a response time of 0.002 ms , and after
resolving this issues i would like to port a part of the computation to the
device so the mcu should be around 40/80 mhz with as much ram as possible .
Maybe someone with more expertise could help , guide me in the right
direction .



---------------------------------------
Posted through http://www.EmbeddedRelated.com
From: Tim Wescott on 7 Jun 2010 12:08
On 06/07/2010 06:11 AM, emanuel_ovidiu wrote:
> For my bachelor project i need a device capable of collecting data from
> sensors and transmit it through a 802.11b transceiver to a pc. I've worked
> until now only with software high and low-end programming but never with
> hardware ; I've started reading and looking through tons of stuff but I
> failed at finding a small factor , max 5cm x 5cm board with an mcu , power
> regulator (as the device has to work with batteries and be as mobile as
> possible). A solutions as MotionBee would have been perfect but i need the
> rf transceiver to work with 802.11b standard so that it would communicate
> with normal wireless routers not only with 802.15.4 ones . A SoC would be
> perfect and if it had an LCD controller even better but thats optional; the
> 3 sensors when in use are having a response time of 0.002 ms , and after
> resolving this issues i would like to port a part of the computation to the
> device so the mcu should be around 40/80 mhz with as much ram as possible .
> Maybe someone with more expertise could help , guide me in the right
> direction .
>
See if you can find a wireless Ethernet module that will talk serial
on-board and 802.11b to the outside world. Then you should be able to
do the rest of it with a simple processor such as a PIC or one of the
new itty bitty Cortex ARM parts that are popping up in low-pin-count
packages these days.

How easy it'll be to integrate will depend heavily on the Ethernet
module, of course, and whether that 5cm x 5cm requirement is do-or-die,
or if it's just a preference. (This would be simple with a PC-104
stack, IHMO).

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com
From: Ibrahim Al-Qassam (Abdelaziz) on 7 Jun 2010 18:54
Microchip Inc.
From: emanuel_ovidiu on 8 Jun 2010 01:44
>See if you can find a wireless Ethernet module that will talk serial
>on-board and 802.11b to the outside world. Then you should be able to
>do the rest of it with a simple processor such as a PIC or one of the
>new itty bitty Cortex ARM parts that are popping up in low-pin-count
>packages these days.
>
>How easy it'll be to integrate will depend heavily on the Ethernet
>module, of course, and whether that 5cm x 5cm requirement is do-or-die,
>or if it's just a preference. (This would be simple with a PC-104
>stack, IHMO).
>
>--
>Tim Wescott
>Control system and signal processing consulting
>www.wescottdesign.com
>

Thats just what i needed , searching for "wireless Ethernet module" gave me
the right result :D
http://www.rfm.com/products/spec_sheet.php?record=WSN802GC (1 square inch)
and its perfect for the first stage testing. I've looked at a few small
form factor computers similar to the pc-104 , as beagleboard pico-itx and
mobile-itx but in all cases they're just an extreme overkill. Thank you !


---------------------------------------
Posted through http://www.EmbeddedRelated.com
From: emanuel_ovidiu on 8 Jun 2010 01:51
>Microchip Inc.
>

they do have great stuff , but to kip it simple I was hoping to find a
small board with as many parts ,that I need, as possible ; if not for the
WSN802GC transceiver with integrated SoC I would've went with a pc32 mcu
and a MRF24WB0MA transceiver both from microchip. thank you anyway

---------------------------------------
Posted through http://www.EmbeddedRelated.com
 | 
Pages: 1
Prev: C18 Compiler again
Next: Need help on getting the original source code of eZ430 Chronos