Some pictures to add to that pretty description :) http://en.qi-hardware.com/wiki/Ben_WPAN#First_Batch
2011/6/7 Werner Almesberger <[email protected]>: > With the atben and atusb boards inching towards tuxbrain's shop, it's > time to write a proper product description. I thought of the following > items. (More comments at the end.) > > First, there would be a part that's common for atben and atusb, with a > few placeholders for device-specific details/clarifications. > > <device> is a wireless IEEE 802.15.4 sender/receiver operating in the > 2.4 GHz band, <device-specific> > > Technical specification: > > - Transmit power up to 3 dBm (2 mW) > - Built-in antenna > - Standard data rate 250 kbps (non-standard and with reduced range, > up to 2 Mbps) > - Typical indoors distance between sender/receiver XX m > <more> > - Linux drivers, hardware design, firmware, and test software are all > Open Source and available under Free licenses (GPLv2+, LGPLv2.1+, > CC-BY-SA 3.0) > - Note: IEEE 802.15.4 is not compatible with WiFi(tm) or BlueTooth(tm). > You need a pair of IEEE 802.15.4 devices for communication. > > The atben-specific part would be: > > <device> = atben > <device-specific> = designed to give the Ben NanoNote short-range > wireless connectivity. > <more> = > - Plugs into the Ben's 8:10 card slot > - Requires product-specific Linux driver > - Note: this is not an SDIO(tm) device and will only work in > products specifically supporting it. > > The atusb-specific part would be: > > <device> = atusb > <device-specific> = that provides IEEE 802.15.4 connectivity via USB. > <more> = > - USB(tm) Full-Speed device > - Requires product-specific Linux driver > - AVR(r) microcontroller with 32 kB flash memory (currently 24 kB > used) > - Note: firmware currently only supports Linux > > Some remarks: > > - I kept the technicality at an intermediate level. If it's considered > too much, one could drop the following items without significant loss > of information: > > - transmit power > - built-in antenna > - list of licenses > > Also not entirely vital are: > > - "Plugs into the Ben's 8:10 card slot" > - "USB(tm) Full-Speed device" > - AVR microcontroller > > - there's a relatively long list of compatibility notes. I think we > need those to make it clear that this isn't just some WLAN or BT > device, or that it'll work in someone's Windows PC. > > - I left the maximum distance open. The devices from the production run > will be a far more reliable base for such measurements than my > prototypes, so I hope tuxbrain can provide that data. For reference, > my own results were: > http://downloads.qi-hardware.com/people/werner/wpan/tmp/apt-wa.pdf > > - I didn't mention higher-level protocol support (IPv4/dirtpan and > IPv6/6LoWPAN), because area is still under construction. > > - we also need to say something about the case, e.g., whether this > will be a kit of board + sugru, or what else was decided. > > Please comment. > > Thanks, > - Werner > > _______________________________________________ > Qi Hardware Discussion List > Mail to list (members only): [email protected] > Subscribe or Unsubscribe: > http://lists.en.qi-hardware.com/mailman/listinfo/discussion > -- David Reyes Samblas Martinez http://www.tuxbrain.com Open ultraportable & embedded solutions Ben NanoNote, Arduino, Openmoko Hey, watch out!!! There's a linux in your pocket!!! _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
