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The iPAQ 310 uses low voltage (3.3v) pseudo RS-232, so you'll need a cable
with an RS-232 voltage level converter. Â*I sell them hehttp://www..cumulus-soaring.com/goddard.htm#I310-PS5a-1 I'm also creating a Condor PC cable with 5V wall power plug that would make it easy to connect a standard PDA cable or cradle to the PC. Â*I have ordered one for testing. Also, you need to use a baud rate of 9600 or higher because the iPAQ 310 can't use 4800 baud. Thanks, although I'm a little confused. I don't need a charging cable... I need it to serially communicate (at least receive) NMEA with my computer while running Condor, which I thought can only happen via bluetooth with a 310... am I missing something here? I do have it set at 9600, COM 5 and since posting this have gotten it linked with Condor again. I needed to do a soft reset (or whatever it's called when you use the device wizard to search, it exits/saves SYM and then I started it back up without pushing the little button by the USB) once I established the initial COM link. This allowed Condor's NMEA stream to override the GPS signal being picked up by the antenna. Before this reset it ignored the Condor feed and was telling me my target in Slovenia required +732,360ft to reach ![]() I have it plugged into a wall charger while I'm using it, although it's a cheap knockoff that doesn't have the two 3.3v pins. I've heard of folks (an electrical engineer I know for starters) hooking straight 5v to these pins without issues, but through trial and error (had a bag of resistors in my hand) I found a 572MΩ resister chops 5v to 3..3 quite nicely if that's what you were asking Andy... sofar I haven't run the batt down during trials so I haven't bothered bridging the resisters to the 5v pin; plus I have the stock 12v charger and a power supply if that is an issue... Still having the problem with the screen rotation issue... I may just be stuck with landscape here. -Paul |
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Hi,
Please see my notes below. Paul Remde "sisu1a" wrote in message ... The iPAQ 310 uses low voltage (3.3v) pseudo RS-232, so you'll need a cable with an RS-232 voltage level converter. I sell them hehttp://www.cumulus-soaring.com/goddard.htm#I310-PS5a-1 I'm also creating a Condor PC cable with 5V wall power plug that would make it easy to connect a standard PDA cable or cradle to the PC. I have ordered one for testing. Also, you need to use a baud rate of 9600 or higher because the iPAQ 310 can't use 4800 baud. Thanks, although I'm a little confused. I don't need a charging cable... I need it to serially communicate (at least receive) NMEA with my computer while running Condor, which I thought can only happen via bluetooth with a 310... am I missing something here? I do have it set at 9600, COM 5 and since posting this have gotten it linked with Condor again. *** I have sold dozens of cables to glider pilots which make it possible for the iPAQ 310 to talk over the serial port to soaring GPS units and flight recorders. It works fine if you have the right cabling and baud rate and select the correct com port (com 3 for the serial port cable connection). It can't work with a 302 because the 302 only supports 4800 baud. But it works great with many other soaring instruments. A BlueTooth connection should work fine too. I needed to do a soft reset (or whatever it's called when you use the device wizard to search, it exits/saves SYM and then I started it back up without pushing the little button by the USB) once I established the initial COM link. This allowed Condor's NMEA stream to override the GPS signal being picked up by the antenna. Before this reset it ignored the Condor feed and was telling me my target in Slovenia required +732,360ft to reach ![]() I have it plugged into a wall charger while I'm using it, although it's a cheap knockoff that doesn't have the two 3.3v pins. I've heard of folks (an electrical engineer I know for starters) hooking straight 5v to these pins without issues, but through trial and error (had a bag of resistors in my hand) I found a 572MΩ resister chops 5v to 3.3 quite nicely if that's what you were asking Andy... sofar I haven't run the batt down during trials so I haven't bothered bridging the resisters to the 5v pin; plus I have the stock 12v charger and a power supply if that is an issue... *** The iPAQ 310 needs 5V power for the main power. But the RS-232 (sort of) serial connection is at 3.3 V rather than 5 or 12 V per the RS-232 standard. The Goddard cable does that conversion and also puts power or ground connections to the right pins to put the iPAQ into "quick charge" mode - which is necessary to allow it to draw enough current to keep up with power usage. Still having the problem with the screen rotation issue... I may just be stuck with landscape here. -Paul |
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On Nov 23, 5:44*pm, "Paul Remde" wrote:
It can't work with a 302 because the 302 only supports 4800 baud. Actually the 302 will support any baud rate you choose to set it to. The problem is that it defaults to 4800 on next power up. That reminds me I'm out of excuses for not getting on with my 302 auto baud set dongle. Andy |
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