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  1. Thread: GDPR test

    by Yakovlev
    Replies
    4
    Views
    176

    Re: GDPR test

    Test test test
  2. Replies
    16
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    3,071

    Re: Detecting the length of a bubble in tube

    Hi Tim,

    To say that's quite a problem you have there is something of an under-statement!

    Don't think I can offer anything more ... but curious about the significance of the bubble size, is this...
  3. Replies
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    3,071

    Re: Detecting the length of a bubble in tube

    Hi Tim,

    Ok ... ref 1/ can you insert a restrictor (to cause a small pressure drop) to help consistently generate bubbles? This could be as simple as a blank disk with a hole drilled in it placed...
  4. Replies
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    3,071

    Re: Detecting the length of a bubble in tube

    Hi Tim,
    If you use two slot opto interupters a fixed distance apart,
    then you can deduce the speed by the time between each triggers
    when a bubble passes. Knowing the speed allows you to then...
  5. Replies
    11
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    2,539

    Re: There must be an easy way!

    This might work ... try visualising the problem by writing 1 - 7 in a circle to test the following;

    CURRENT_TRUE = 0
    IF END_DAY <= START_DAY THEN
    IF CURRENT_DAY <= END_DAY OR...
  6. Replies
    157
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    20,996

    Re: Stealing Proton

    My 2 cents as a former product manager is to take a hard nosed commercial view of the PDS cloud model ...

    - Most likely it will only really alienate a number of professional users who spend a lot...
  7. Replies
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    3,176

    [SOLVED !] Re: about new UMC boot loader

    Les - is the latest compiler beta roadmap near completion? As anything not of production status gives approvals issues for a project I'm working on.
    Thanks, Rob
  8. Replies
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    3,176

    [SOLVED !] Re: about new UMC boot loader

    Hi David,
    How do I get to use your UMC bootloader please? ... I'm running a licensed Proton 3.5.0.6.
    I've found the Swordfish 'how to' info but not how to get the code itself.
    Sorry for the basic...
  9. Replies
    8
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    2,160

    [SOLVED !] Re: Data Table Size

    Old thread but I'd like to double check if this 32k byte element limit is still the case following intervening compiler updates, as I wish to exploit more than 32k of CDATA storage (across several...
  10. Replies
    29
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    5,479

    [SOLVED !] Re: Simple Switcher Inductors

    Seems like you may have created a resonant LC input filter ... technically summed up by the following quote from Venable Industries 'Minimizing Input Filter requirements in Military Power Supply...
  11. Replies
    15
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    6,460

    Re: Best Optocoupler method

    John,
    If you use 6N139 opto-couplers (or HCPL2730 dual package to save space) then the drive current can be reliable down to 1mA, allowing 22Kohm 0.5W resistors (I use MF50 high surge voltage types)...
  12. Thread: HBus Out

    by Yakovlev
    Replies
    34
    Views
    5,539

    Re: HBus Out

    My bad ... should not try using my brain at this time in the morning!

    Rob R
  13. Thread: HBus Out

    by Yakovlev
    Replies
    34
    Views
    5,539

    Re: HBus Out

    Doug,

    Looking at your original post I see you're assigning SCL / SDA to pins other than the ones dictated by the 18F452 MSSP (SCL PortA.2 / SDA PortA.3) that are used by HBusOut command (the "H"...
  14. Replies
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    3,120

    Re: Interrupt Debounce

    If you have multiple inputs on the same port then try using a byte array to individually debounce the 8 bit inputs until they establish a steady state i.e. if you sample every 20mS then 5 steady...
  15. Replies
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    3,541

    Fanie, The moisture content of the package...

    Fanie,

    The moisture content of the package contents will also play a large part in the perceived capacitance as far as the sensors are concerned.

    It's whether the humidity / condensing moisture...
  16. Replies
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    Fanie On reflection all that condensing...

    Fanie

    On reflection all that condensing moisture could lead to false positives with capacitive sensors, especially as they only tend to have a short sensing range.

    So maybe ultrasonic sensors...
  17. Replies
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    Fanie Assuming the order of packages on the...

    Fanie

    Assuming the order of packages on the slide cannot be screwed with then may be ...

    - a capacitive proximity sensor (maintenance free & cleanable) at the top of slide registers a package...
  18. Replies
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    5,463

    [SOLVED !] Simple RS232 Rx inversion

    If you need to handle an inverted Rx then this works & can survive true RS232 voltage i/ps too ... the 2N7000 is about 50p from Maplin ... just don't leave the gate disconnected or it will float &...
  19. Replies
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    5,052

    If you want chip based TTS, then have a look at...

    If you want chip based TTS, then have a look at this successor to the venerable SP03 ... not cheap but capable.

    http://www.rcsys.com/chips.htm

    I bought their eval board 18 months ago for a...
  20. Replies
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    [SOLVED !] Think this should do the trick ... it doesn't...

    Think this should do the trick ... it doesn't factor magnetic variation but that shouldn't matter for your purposes.



    Dim BEARING As Word ' integer Bearing to destination in degrees...
  21. Replies
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    2,388

    Just a thought ... if you can afford the space to...

    Just a thought ... if you can afford the space to make "DP" a Dword, then initially multiplying DP x 10,000 (assuming DP is not a large number to begin with) & taking the SQR will provide an answer...
  22. Replies
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    Doh! - typo crept into the thread name ... so for...

    Doh! - typo crept into the thread name ... so for posterity it should have been called "EREAD & 18F452 errata C1"

    Rob
  23. Replies
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    1,729

    Thanks for the pointer - between the .PBP & .LST...

    Thanks for the pointer - between the .PBP & .LST files I found there's one instruction clearing the EECON1 register between writing to EEADR & setting the RD bit ... so the minimum of one instruction...
  24. Replies
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    Hi Tim, It just gave me a "CALL [email protected]" which I...

    Hi Tim,

    It just gave me a "CALL [email protected]" which I could not locate elsewhere within the assembler listing, hence the query ... have I missed the obvious here (not for the first time)?

    Cheers, Rob
  25. Replies
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    1,729

    CREAD & 18F452 errata C1

    Les,

    The 18F452 errata C1 highlights a potential EEDATA corruption problem (see below) - could you advise please if this likely to be an issue with how the CREAD assembler call (CALL [email protected]) has...
  26. Thread: DIM placement

    by Yakovlev
    Replies
    4
    Views
    1,773

    DIM placement (became IF ... THEN anomaly)

    Les, Tim

    FYI ... tested 3.2.5.0 (18F452) against the IF ... THEN comparison of BIT dimensioned variables from my ongoing issue of a couple of months back (as per thread) & pleased to advise this...
  27. Thread: DIM placement

    by Yakovlev
    Replies
    4
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    1,773

    Fair comment Paul ... I'd wondered the same ......

    Fair comment Paul ... I'd wondered the same ... except that the theoretical max array data is 82 chars (so DIM 90 allows for potential overrun) & in practice 72 chars is the largest I've seen (set a...
  28. Thread: DIM placement

    by Yakovlev
    Replies
    4
    Views
    1,773

    DIM placement

    Spent the last day or so trying to identify why my previously working program routines (c.12Kbytes on a 18F452 - 20Mhz) had developed some curious anomolies ...

    eg.1 - a given IF THEN statment...
  29. FYI - my finger trouble ... should have read the...

    FYI - my finger trouble ... should have read the Proton manual small print "bitwise operations are not permissible with floating point values or variables"!

    This works correctly:
    GEAR_DEBOUNCE =...
  30. Doh! ... broke my rule of not backing up the...

    Doh! ... broke my rule of not backing up the previous version of Proton+ before installing the new one.

    Is there a way I can re-install the old version again? ... as I'm having what appears to be...
  31. Replies
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    [SOLVED !] Suggest you read through the "protongeeks" link I...

    Suggest you read through the "protongeeks" link I posted again where it gives an example of CData with Pprint & how it relates to mapping a font character.

    In this case you'll need to write a...
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    [SOLVED !] Try david.godsmark(at)devlin.co.uk ... Field...

    Try david.godsmark(at)devlin.co.uk ... Field Sales Engineer - Components

    Rob R
  33. Replies
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    [SOLVED !] Sorry the pricing given me was provided in...

    Sorry the pricing given me was provided in commercial confidence. I could only guesstimate that a one off price would be in the 30+ area ... you would need to contact E3's UK distributors Devlin...
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    [SOLVED !] [QUOTE=Neil] Right, I have not upgraded my...

    [QUOTE=Neil]

    Right, I have not upgraded my compiler for a year or so, so I guess i may need to look into that.

    [QUOTE]

    Guess the Crownhill team would appreciate you becoming a licensed user...
  35. Replies
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    [SOLVED !] Sounds about right to me. Unless you're...

    Sounds about right to me.



    Unless you're looking to create a keypad of LCD switches you may want to consider the BUTTON command instead.



    The Fontconverter is a companion program that can...
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    [SOLVED !] Each LCD switch either has to use a dedicated...

    Each LCD switch either has to use a dedicated Data port pin (but could share a common Clock, allowing for electrical limitations) or use external hardware to multiplex ... the www.e3-keys.com site...
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    [SOLVED !] Not aware of any that can display a text string...

    Not aware of any that can display a text string straight out of the box, they all seem to require external font maps. IMHO the E3 is the easiest to hook up, but the memory mapping gets less friendly...
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    [SOLVED !] That's where the fun starts ... you'll need to...

    That's where the fun starts ... you'll need to make a font up and store it as CData. I went for 2 display lines of 6 chars, with each char 10 bits wide x 2 bytes high. Derived this using the Font...
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    [SOLVED !] Take a look at the SA Technical Datasheet v2 at...

    Take a look at the SA Technical Datasheet v2 at http://www.e3-keys.com/downloads/downloads.htm

    It shows all the command codes, display screen address maps etc you'll need to write to this device...
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    [SOLVED !] Standard SHout / SHin commands do the trick - as...

    Standard SHout / SHin commands do the trick - as for example below where Data is A.3, Clk is A.2, 0x41 is "set background LED colour" command, LED colour %00RRGGBB, 0x43 is "execute" command.
    ...
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    [SOLVED !] Found these E3 equivalents last week - easier to...

    Found these E3 equivalents last week - easier to interface (SPI), no refresh & higher res (64x32) ... although screen mapping a little odd

    http://www.e3-keys.com

    UK distributor is Devlin...
  42. Replies
    4
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    2,538

    FYI - even after mechanical teleprinters went out...

    FYI - even after mechanical teleprinters went out of fashion RTS / CTS were still essential in polled networks (airlines / banks etc), where mutliple downstream controllers had to share an upstream...
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    Carlo, Had same problem on my XP machine -...

    Carlo,

    Had same problem on my XP machine - seems this OCX was not carried over from W2K to XP.

    The following URL provides MS's remedy ...
    ...
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