On Tue, Jun 26, 2012 at 10:58:46AM +1000, Alan Wilson wrote: > Ronald, > > I don't need an ASI: the pneumatic 53mm or 78 mm round thing that goes into > the instrument panel. I would like a 'black box' that could provide an > airspeed data stream into a mini USB [and USB 5 volts] > > With my stand alone GPS I can derive wind speed and direction by thermalling > or doing 3 turns or so. [and the GPS produces all the other XCSoar > functions] > > In wave flying doing 3 turns may lose the wave. I believe to derive wind > speed and direction in straight and level flight I need a digital feed of > airspeed compatible with XC Soar. [Wind velocity can be derived by > computation using [GPS] ground track and speed, and indicated airspeed > data.] > > What I currently take in club gliders is a simple open source Chinese car > GPS and I derive 5 volts via a car charger. [AS SEEN IN THE ATTACHED > PICTURE]. I either RAM mount connect it to the instrument panel, or Velcro > the GPS to my leg. [We don't like suction caps as we believe they will > distort the Perspex canopy over time.] > > What I am looking for is a 'black box' that has inputs of pitot pressure and > 10 to 24 volts DC and outputs an XCSoar bitstream and 5 volts to a mini USB > plug. An additional input consideration could be FLARM data. > > Pitot pressure data may be available from a B50 or Cambridge SNAV LNAV but > compatible plugs, wiring and black box may still be required. > > Cost. Hmmmm. Chinese GPS cost $80 ~ $100 AUST. Oudie say $600, or > hardwired proprietary LXNAV $ ,000 in each club glider. And this device > would only give me wind speed and direction in level flight [that I can > derive in 3 turns]... So I guess $150 would be a target price for the black > box?
There is your blackbox: http://www.tasmaninstruments.com.au/Fp10_fb.htm But it costs 610 USD. What i don't get is why you don't want to use the Borgelt B50's serial out? Fiddeling with the tubing everytime you want to fly a club glider, seems risky, proably illegal, and a really bad idea in a club fleet. The next issue you will face is the fact that your chinese gps only has a usb client port. That means whatever device you connect this to needs to be a usb-host and there need to be drivers for the os on your navigation device. I see here very little potential success rate. What might be an option is if the navigation device supports life traffic data (TMC) via an external connector. Usually a 3.5mm jack. This is actually a serial port running at 4800 baud. The third option is a serial bluetooth adapter at the back of the borgelt. Proabably the easiest/best/cost effective supported solution: http://www.iogear.com/product/GBS301/ I don't know any solutions for the winter vario. Hope that helps. - Folken ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Xcsoar-user mailing list Xcsoar-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xcsoar-user
