As an aside, I have been playing with a few modules, including the Haicom, to see what they pump out of their TX lines. An old Sigem SGM5608 "Here& Now" pcb that came from a 2000 era car tracker gave one neat line, once per second (lat/long obscured): $GPRMC,135654.00,A,1234.5678,N,00123.4567,W,0.0,131.7,020814,,*23 It also gave a 1pps output.
I also tried for ages to get another pcb receiver from the same line of tracker (I had loads of them) to work, a motorola ONCORE SL series R6111G1112. I could get nothing from these at all. Not a peep, at any baud rate. Fed through a MAX232. It only has one TX line, but has 2 RX lines and the pdf states loads of weird motorola protocol stuff. I would avoid this for your own sanity. The Haicom units are a bit weird also, they pump out loads of stuff at a fair old rate, here is a snapshot, this repeated on a 1 second duty but took about 500ms to transmit at 4800 baud (again lat/long has been swapped out): $GPGSA,A,1,,,,,,,,,,,,,,,*1E $GPGSV,3,1,12,15,59,352,,24,54,172,,21,36,314,,25,26,193,*7F $GPGSV,3,2,12,18,21,309,,08,12,192,,01,10,240,,05,03,079,*74 $GPGSV,3,3,12,27,13,331,36,19,27,353,40,12,00,170,,03,24,348,35*7C $GPRMC,161253.00,V,1234.5678,N,1234.5678,E,,,020814,,,N*4A $GPGGA,161253.00,1234.5678,N,1234.5678,E,0,00,0.0,,M,,M,,*5E >From reading the manual, I think you can turn these other messages off, which probably only serve to fill up a serial buffer on a pic (which is a scarce hand crafted software based affair). Just food for thought on picking a replacement gps module. I suspect Jeff used the GPRMC line only and trimmed the fat from that, plugging something that swamped it with satellite signal strengths, speed over land, bearing info etc is probably the root of the problem. - Alex On Saturday, 2 August 2014 09:58:38 UTC+1, Alex wrote: > > By pure co-incidence, I have a Haicom HI-204E on my desk here, completely > un-nixie related. I liberated it from work a few years back and was going > to use it, along with a PIC16F877, to run the display section from an old > scrolling 60x7 LED board that has a somewhat handicapped controller at > present. I have a drawer full of 16f877 and a somewhat masochistic attitude > to writing software. > I also have the manual for said GPS receiver, and the CD with the manual > as a .pdf so can upload it if interested? > If anyone does get any source code, I would definitely be interested in > having a peruse of his GPS routines :-) > - Alex > > On Thursday, 31 July 2014 15:27:18 UTC+1, rubli wrote: >> >> I found the mail Jeff once sent me : >> >> Correct, the GPS receiver is a Haicom HI-203E. >> The PS2 connector pinout may still be available on the Haicom web site. >> Four of the pins are active: Power=5vdc, Gnd, Serial data IN, Serial data >> OUT. 4800b, 8 bits, no parity. >> Only the $GPRMC is transmitted at each epoch (one per second), all other >> NMEA-0183 strings are disabled during reprogramming here when the clocks >> are assembled. >> >> If you can locate the pinout, then you can use any terminal program set >> to 4800b to monitor the output. If the receiver does output the string, >> then the clock is bad, and must be returned for repair. >> >> Jeff >> >> On Apr 7, 2006, at 10:40 AM, Alex Rubli wrote: >> >> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/073f9579-fa7c-4799-95a7-3d73104fb65c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
