Re: Newbie - Sensor|Wireless|Usb

Hi all,

my knowledge of arduino and electronics is almost null, so i like to ask to all some help.

I´m pretending to build a wireless device to send data do a computer.

The scheme i´m thinking is:

(DATA SENDER) >> Polymer Lithium Ion Battery - 1000mAh (http://www.sparkfun.com/commerce/product_info.php?products_id=339) >> 5 Flex sensores (http://www.sparkfun.com/commerce/product_info.php?products_id=8606) >> Analog/Digital MUX Breakout (http://www.sparkfun.com/commerce/product_info.php?products_id=9056) >> Arduino Pro Mini 328 - 3.3V/8MHz (http://www.sparkfun.com/commerce/product_info.php?products_id=9220) >> XBee Explorer Regulated (http://www.sparkfun.com/commerce/product_info.php?products_id=9132) >> XBee 2mW Series 2.5 Chip Antenna (http://www.sparkfun.com/commerce/product_info.php?products_id=8691)

(DATA RECIEVER) >> XBee 2mW Series 2.5 Chip Antenna >> XBee Explorer USB (http://www.sparkfun.com/commerce/product_info.php?products_id=8687)

Computer

(LOCAL TESTING) >> 5 Flex sensores >> Analog/Digital MUX Breakout >> Arduino Pro Mini 328 - 3.3V/8MHz >> FTDI Basic Breakout - 3.3V ( http://www.sparkfun.com/commerce/product_info.php?products_id=8772)

Computer

So please could you tell me if this gonna work ? Any sugestions for the xbee modules are acepted.

Another think very important is the baud rate - want to have the most baud rate possible, so its better to do this with bluetooth?

Thanks for any help.

The XBees that you have chosen will probably not work. The Series 1 models are designed for point-to-point bi-directional communication.

The Series 2.5 that you specified are for use in a mesh network, where communication is not bi-directional.

I have never gotten to Series 2.5 modules to communicate bi-directionally.

Another think very important is the baud rate - want to have the most baud rate possible, so its better to do this with bluetooth?

There are ways to minimize the amount of data sent that are better explored than worrying about how to send data as fast as possible.

We'd need to know more about what kind of data you are trying to send, and how fast it really needs to go. The XBee is capable of speeds up to 115,200.

Thanks Richard an Paul.

Richard:
any sugestion for recharging the battery? Can i buy some type of recharger?
The external mux is if i want to add others sensores: Gyro or velocimeters, so i presume will need it …

Paul:
I supose the Series 2.5 are better(more range and features). That i choose it. But are the series 1 the right for this? ( i think for this i only need not bi-directional because i want only to receive the data from the sensors, but i also want to buy something for using in the future so bi-directional are very welcome). What s your advice for the Xbee, and please remember that have to work with the battery.

There are ways to minimize the amount of data sent that are better explored than worrying about how to send data as fast as possible.

We’d need to know more about what kind of data you are trying to send, and how fast it really needs to go. The XBee is capable of speeds up to 115,200.

I want to receive the most data possible, but for now 100 will be cool - its to record hand mocap data for a animation system i tring to build.

Thanks for the help, and sory the newbie questions.

The Series (1 or 2.5) does not affect range. Both series are available in chip, wire, and external antenna configurations, and in regular and pro (extended range/higher power consumption) models.

The features are what distinguish the Series 1 (point to point) and Series 2.5 (mesh network) models. They are not interchangeable. The higher number does not make them generally better. Choose the series based on how you want to use the radios.

Thanks both, for the help, it was precious.

i gonna buy the series 1 - XBee 1mW Chip Antenna (802.15.4) (price and bi-dreccional data). Also gonna take out the XBee Explorer USB and buy one arduino with Arduino Xbee shield without RF module, to receive the data - more options in the future.

Really thanks.