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Type: Posts; User: IanHemmingsen

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  1. Re: Does anyone have experience with the 1000v A/N isolated convertion ?

    Why not use a simple isolated 5V/5V convertor. NMA0505 or the like. Has 1000V rating. Use something else if >500V between sides
    A voltage divider from the 1000V to an ADC. A resistor chain, but do...
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    Re: Float Maths Help

    T'was me :distrust:
    Try http://www.protonbasic.co.uk/showthread.php/68560-Floating-Point-calculation-error-under-specific-conditions?p=480720&viewfull=1#post480720
    Ian
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    Re: PORT as Variable

    Write your own "bit banging" serial routine to write to all the port (bits) at the same time, if you are always writing the same thing to all the serial outputs.
    Your call if it is worth the effort,...
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    Re: I2C Questions

    >>Do I need to connect the GND of both devices making it technically a 3wire interface?
    >Common ground is important
    As is the 4th wire, being supply volts:livid:
    Don't forget the pullups on SDA &...
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    Re: Protn 24 upgrade cost

    Count me in :)
  6. Re: Where is "current" path to MpasmWin.exe [Assembler] stored?

    Thanks Les,
    I checked/tested again, and it is as you say.
    Don't know what was happening yesterday.

    Next "nice to work" would be a methodology to install extra plugins so they work with all...
  7. Where is "current" path to MpasmWin.exe [Assembler] stored?

    Trying to swap between different versions of PDS Compiler I have installed in different directories. eg C:\Program Files\ProtonIDE_3506\...
    I can switch to different Proton Compilers in the IDE with...
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    Re: Known Issues

    A "one stop" list of confirmed/known issues (as they emerge) during the life of the current/latest version is what I mean .
    Finding out what was wrong with the current version (you were using), when...
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    Re: Known Issues

    Forum working now. Thanks
    Would be great if it contained a list/summary of confirmed issues since last release. The Anomaly forum will get big and mostly outdated with time. No longer easy to...
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    Known Issues

    On this page:-
    http://www.protonbasic.co.uk/content.php/3963-Anomaly-Reporting-and-Known-Issues

    All licensed users are invited to report anomalies - after checking the known issues forum area -...
  11. Re: Proton24 as Open Source software - discussion

    I agree whole heartedly on keeping the PIC24 Compiler limited to the core functions. All the rest can be done by libraries, [much like C really :nightmare:].
    It will reduce the amount/frequency of...
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    Re: Are there any "stable" beta releases?

    I was doing the same until a while ago (putting different versions in different directories) with mixed success.
    Maybe some help/advice from someone with inside knowledge is needed.

    Ian
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    Re: Are there any "stable" beta releases?

    Les has just made it clear that V3.5.5.1 is not a beta release.

    Can 2 (or more) versions of the compiler co-exist on one machine? If so, how do you set it up?
    I need to run older versions to...
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    Are there any "stable" beta releases?

    Version 3.5.0.6 was released June 2010.
    Since then all releases have been beta versions.
    Can I consider V3.5.2.9 as a stable/bug free version?
    After this, signed variables were introduced, among...
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    Re: Led failure modes

    Also consider a "walking wounded" LED. ie esd damage at some stage. assembly/in service etc
    Its then just a matter of time, to visible failure
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    Re: Led failure modes

    An ohmmeter will indicate something is different, but consider the ohmmeter outputs some volts when making the "resistance" measurement
    Has Vforward for the device changed @some given forward...
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    Re: Led failure modes

    Have a read of these. They may apply/help:-

    http://www.digikey.com/us/en/techzone/lighting/resources/articles/understanding-the-cause-of-fading.html...
  18. Thread: I2C bus

    by IanHemmingsen
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    Re: I2C bus

    Be warned its not that easy. Decide early if you are running multi master, or 1 master & multi slaves.
    Using PIC's as master is easy. Can use nearly any PIC and bit-bang I2C master operation in...
  19. Re: Two DS18S20, attached together, give different value of temperature.

    The results are what I would expect.
    Read the Maxim datasheet regarding accuracy specification.
    I think you will find they are both well within specifications
    Ian
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    Re: Suggestion for multi-file projects.

    Agree entirely here.
    It would also be great if the IDE recognised declared variables inside .inc files as you type them etc
    I find myself tending not to use .inc files and just paste the contents...
  21. Re: Install files for V3.2.5.5 Compiler, required please

    Hi bill.
    Have started a thread in beta section with my code issue.
    Good point. Made me realise I will need to go back to the assembler used at the time also.
    Will see if new thread in beta area...
  22. Re: Install files for V3.2.5.5 Compiler, required please

    >Which, you must agree, is not much to go on, even if you had attached the offending program.
    I agree entirely, you would need the complete software, hardware, and sensors/simulators etc
    But I...
  23. Re: Install files for V3.2.5.5 Compiler, required please

    Hi John,
    Need to go back further in time:-( Need V3.2.5.5
    Your Ver 3.5.x.x is fairly recent
    Have just found V3.2.5.2 here, and have got it running...I think... but not convinced yet
    Might have to...
  24. Install files for V3.2.5.5 Compiler, required please

    Do to rework required on an old piece of code, I find I need to install version 3.2.5.5 of the Compiler I used at the time
    Does anyone have a copy of the files or able to point me to where I can...
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    Re: EE Friend spreadsheet

    Have a look at http://www.miscel.dk/MiscEl/miscel.html
    Called Miscellaneous electronic calculations
    I think you will find it has almost everything
    If not ask and he will add it probably

    Ian
  26. So here I am on the Forum and I notice that only,... 1 member(me), and 50 guests!

    Makes me wonder
    1) Whats the hit rate of Proton sales to registered users?
    2) Or are there lots of pirate copies somehow?
    3) With so many "users" out there, I wonder how many live in NZ or...
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    Re: V Info Plugin Update

    Great effort, thanks
    Is it too late to add the Compiler Version to the list?
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    Re: Port Alias

    Try
    Dim VPort_0 As PORTB.2
    Dim VPort_1 As PORTB.7
    Dim VPort_2 As PORTA.0

    not sure why you want the "." in the alias name. It will only confuse compiler

    Ian
  29. Sticky: View Post

    RS's response to Element14 (Farnell) selling Eagle maybe? Looks a lot like Eagle and imports Eagle files. Will keep an eye on it but at the moment support/forums/reliability is something it will have...
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    Re: Problem with LookDownL. Broken?

    With "<>", every number entered from say 0 to 65535, would return 0, except for the number that matches 1st entry in table which would then return 1.
    So I take it LookDown can't be beaten for my...
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    Re: Problem with LookDownL. Broken?

    The use of the > operator is they key. I can lookup table with any number returned from the RC circuit [Word or DWord range] and return 0,1,2..51 if it falls in one of the "windows" of RC counts. ...
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    Re: Problem with LookDownL. Broken?

    Hope this helps explain why
    Numbers from a RC circuit. Thermistor is NTC so the lower the temperature, the larger the RC count
    NTC in parallel with 2nd resistor to "linearise" the relationship with...
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    Re: Problem with LookDownL. Broken?

    Confirmed LookDownL all working again with V3.5.1.2
    Code 35 bytes shorter from 2008 version, so still checking nothing else broken.

    Thanks again Les for your very fast response on this
    Ian
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    Re: Problem with LookDownL. Broken?

    Hi Fannie,
    No good unfortuanatly. LookDown is where I want to enter with say 189 and return with its neasest position in table.
    My application was entering with a RC from a thermistor circuit and...
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    Re: Problem with LookDownL. Broken?

    Thanks Les.
    Always pleased to know that its not me loosing the plot, as one suspects first with advancing years of experience
    Resorted to patching the Hex file to achieve the change needed. Still...
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