On Wed, 2005-09-14 at 10:32 -0600, Noel Paz wrote: > I have a BT weight scale and I want to communicate to it. Problem is I > think it is set to be un discoverable. According to it's scant > documentation it uses the BT serial protocol and a 128 bit encyrption > and a PIN. - that it expects to start communication. Supposedly, after > it weighs something, it tries to find an ACCESS point, see if the > Access Point has the same PIN and if it does it transmits data packets > which are very discrete This sounds like a very strange way of doing things. I'm sure they had their reasons though. > hcitool --scan and sdptool --browse cannot find it (yes I have made sure > it can find other devices). I've turned hcidump too too make sure I can > sniff it but to no avail What did you browse for? > Honestly, I am new to BlueZ and have been devouring as much > documentation as I can. My thoughts are setting up a PAN with an access > point role using rfcomm. If anybody has worked on one way traffic > bluetooth devices, let me know. I really have no way of knowing whether > this weight scale has a broken radio, although I can experiment with > making my other devices undiscoverable with a PIN. Unfortunately their > support is for Windoze only and require you to buy a container full of > weight scales before their engineers will talk to you. I did a bit of experimentation with a GPS device, documented here: http://www.maths.tcd.ie/~jscrane/gps/ As described, this device provides a service to which you must connect before it will spit out GPS data. > BTW there is a little sticker which seems to be the bdaddr. You could try running l2ping against that bdaddr: that should tell you if its working. Steve -- Stephen Crane