/snip Date: Mon, 23 Jun 2008 09:24:35 -0700 (GMT-07:00) From: "Richard W. Solomon" <[EMAIL PROTECTED]> Subject: Re: [time-nuts] THUNDERBOLT STATUS LED'S
If there is NMEA Data available, there is a design utilizing a PIC chip that will indicate 3D GPS Fix. It was published by W1AUV. 73, Dick, W1KSZ / end snip This si something that has been on my laundry list for quite a while. Some time ago I became enchanted with the PicAxe chip and determined that reading $GPGSA data for the value of 3 is a pretty easy thing to do. For those not familiar with the picaxe is as a pic with a bootloader built in and a free "Basic-Like" compiler. While it is somewhat limited in what it can do, and the speed that it can do it, the price is extremely attractive... http://www.rev-ed.co.uk/picaxe/ $GPGSA,A,3,04,05,,09,12,,,24,,,,,2.5,1.3,2.1*39 Where: GSA Satellite status A Auto selection of 2D or 3D fix (M = manual) 3 3D fix - values include: 1 = no fix 2 = 2D fix 3 = 3D fix 04,05... PRNs of satellites used for fix (space for 12) 2.5 PDOP (dilution of precision) 1.3 Horizontal dilution of precision (HDOP) 2.1 Vertical dilution of precision (VDOP) *39 the checksum data, always begins with * _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
