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  1. Replies
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    Well, I could say, it wont have any noise, but...

    Well, I could say, it wont have any noise, but seriously, you need to find out what the required voltage and current is and either get a quality (that will be hard) switching unit, with no guarantee...
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    IMHO sounds like the charger is a P.O.S switching...

    IMHO sounds like the charger is a P.O.S switching supply and injecting noise into everything. Find out what voltage the Phone needs to charge at and try a linear type charger (non switch mode).
  3. I have had 4 microprocessors running in my...

    I have had 4 microprocessors running in my vehicle for almost 5 years, I have never had a fault or a glitch - I only designed them for 18V peaks - Yes I know - not normally recommended tolerance -...
  4. This is true but for shear simplicity and the...

    This is true but for shear simplicity and the power available underneath that simplicity, especially for a non programmer, it's hard to beat.

    Like I said for a beginner this is ideal: To read an...
  5. Hi, I normally program Microcontrollers in...

    Hi, I normally program Microcontrollers in assembler, and have s few in my vehicle controlling HVAC and various vehicle systems interfaces to a Car computer.

    However I had a recent project that...
  6. Finally had the time to take a look at the NMEA...

    Finally had the time to take a look at the NMEA fields, that document SNO referred to is "partly correct" or possibly for the previous version of the board? I mean the document is incorrect not SNO...
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    Not familiar with it. If vehicle battery in the...

    Not familiar with it. If vehicle battery in the trunk, where are the AMP and PC located - how far apart are the two.

    Ideally run a +12v AND a Negative cable directly from the main battery...
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    There are two other things that need to be done...

    There are two other things that need to be done correctly to eliminate noise induction into interconnect cables and further reduce ground potential effects.

    1: Use heavy duty double shielded audio...
  9. One quick thing to try. Check the current refresh...

    One quick thing to try. Check the current refresh rate and if possible change it to a lower setting, see if there is any change to the GPS signal.
  10. Just a quick update for anyone interested: ...

    Just a quick update for anyone interested:

    Temporally mounted that small magnetic aerial central at the rear lip of the bonnet (that's about 1ft from the base of the Windscreen) Surprised it...
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    Sticky: Looking at the description of the K150 it should...

    Looking at the description of the K150 it should do the job.

    The ICSP header interface is not a serial protocol so a USB to serial convertors can not be connected to it. Simply put, a code...
  12. For what it's worth, this is the quick and dirty...

    For what it's worth, this is the quick and dirty knock up I made to test the module. Standard plug headers soldered to the module allow it to be plugged into a socket on the vero prototyping board -...
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    Sticky: This is hard to diagnose over a forum. I don't...

    This is hard to diagnose over a forum. I don't know how much knowledge you have of Micro Processor programming.

    The timing of the Programming lines, the voltage on the programming control pin and...
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    Sticky: Unless Minibox software shows you a full HEX dump...

    Unless Minibox software shows you a full HEX dump from the PIC (which it won't over USB) - not the SW revision or other data - as certain locations can be read protected you may still be trying to...
  15. Ok, finally got the BT‐Q818XT to run for more...

    Ok, finally got the BT‐Q818XT to run for more than a few minutes so I can confirm that the NMEA RCM field (positional data, speed ,ETC) all appear to be coming out updated @10Hz (speed data is...
  16. Now don't laugh :loco: There are a number of...

    Now don't laugh :loco: There are a number of options that can set and saved in the Module - one change had not stuck - dam thing was still outputting @ 20Hz and of course with the baud rate set to...
  17. Hi SNO I've used Garmin @5Hz for years with the...

    Hi SNO I've used Garmin @5Hz for years with the BT‐Q818XT, this Venus Unit is updating Garmin @5Hz but appears to not be updating the Positional data correctly - I need to compare the two to be sure....
  18. SNO is correct, Once I got up to faster speeds...

    SNO is correct, Once I got up to faster speeds there is an anomaly in the update position on GPS - update is fast but position lags. I managed to get my BT‐Q818XT - 66 channel 10Hz update module...
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    Sticky: Are you sure that the current PIC was not...

    Are you sure that the current PIC was not programmed with code protect enabled? That will cause it to read back 3FFF or 0 depending on the programmer. I don't think the ICSP port connections would...
  20. http://update.gpsgate.com/install/GpsGateClient.ex...

    http://update.gpsgate.com/install/GpsGateClient.exe

    The full site is http://gpsgate.com/download

    GpsGate Client Express for Windows is free for use without time limitations. Additional GpsGate...
  21. I have only seen that on Garmin with a type of...

    I have only seen that on Garmin with a type of multipath reception error - not the correct term I'm sure but someone who's into GPS theory will chime in I'm sure, I can get Garmin to do this at 5Hz...
  22. I am currently running 10Hz, Garmin PC...

    I am currently running 10Hz, Garmin PC immediately starts map updating at 5Hz ( a big difference to 1Hz), Mapfactor was as smooth as silk at 10Hz with instant tracking of my vehicle position.
  23. Hi, glad it was of use to someone. FYI I used a...

    Hi, glad it was of use to someone. FYI I used a LM3940 for the regulator, only other components are a 22uf 16v and 0.47 caps for the regulator. If anyone is interested I can add a picture of the...
  24. Venus GPS development boartd with 1 to 20Hz update rate

    I ran into a problem with one of my GPS receivers and decided to look around for another, this time one that would accept a tiny external GPS antenna. What made me go with the Venus GPS was its size...
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    I understand what you are saying as well: BUT one...

    I understand what you are saying as well: BUT one of the most used screens on my Front end is my GPS derived Speed display - Most Vehicle speedometer are not accurate enough and some countries have...
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