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  1. Replies
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    flash is just a solid state non volatile memory...

    flash is just a solid state non volatile memory format. essentially the same as hard disk drive without the moving parts.
    There is no requirement for anything to specifically use flash within a...
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    353

    Did make a couple of mistakes along the way, took...

    Did make a couple of mistakes along the way, took a few hours but get there in the end.
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    I don't if this will just confuse thing, but I...

    I don't if this will just confuse thing, but I used opto isolators for my camera remote shutter

    project here: http://www.picaxeforum.co.uk/showthread.php?26768-High-speed-photography
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    633

    I will try and get a pick up soon. I found the...

    I will try and get a pick up soon.
    I found the board is FR2 - which IIRC does have some paper, wiki quotes as having low moisture resistance. living on Dartmoor means its always a bit on the damp...
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    633

    I do work night shift

    I do work night shift
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    633

    sorry, tiss. not long awake when I posted.

    sorry, tiss. not long awake when I posted.
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    633

    Its home brew board. The FETs have a 10K between...

    Its home brew board.
    The FETs have a 10K between gate and drain. they are IRF9520 (n type FET). The circuit works perfectly on bread board.
    If I remove the FETs there is still voltage on the gate...
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    633

    Conductive PCB substrate

    Just built up a board, basic tests showed things to be fine, until I tested the MOSFET output. no matter what they always had and output - and an input. After mush pocking around with a multi meter I...
  9. the first thing that stands out to me is you call...

    the first thing that stands out to me is you call the interrupt and then a goto command, you never return to the interrupt and never return from the interrupt which I would think will cause a stack...
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    reasonably sure you have missed the point of the...

    reasonably sure you have missed the point of the original LED density. and for that matter, the density of the 10mm LEDs, the gaps in the strips are not what one would call ideal, its why the LEDs...
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    He's more deaf than blind. You can often hear the...

    He's more deaf than blind. You can often hear the TV from the bottom of the drive duty all Windows and doors closed
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    By comparison to learning the correct programming...

    By comparison to learning the correct programming for the LEDs, Surface mounting 200 Plus LEDs masking them out so the pcb can be painted and waiting for them to arrive from where ever they are...
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    Think I have the control Circuit sorted. The...

    Think I have the control Circuit sorted.

    The MSF clock may have to wait, although I am adding the header for it. If I do get to it, or when as I will have some access to it after the new owner...
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    So dimmed LEDs are easy to see? I can get full...

    So dimmed LEDs are easy to see? I can get full brightness with 80mA and nice and easy to see, or half rightness and harder to see. Or full brightness and twice as much power consumption.
    ...
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    And to create segments' of the same size at lest...

    And to create segments' of the same size at lest twice as many would be needed which then causes the same power issues as before. Believe out not apa102 doesn't solve the problems with an old guys...
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    Done a little looking around, and for the size...

    Done a little looking around, and for the size requested OLED displays start becoming quite expensive.
    I have drawn up a board to use 4 10mm LEDs per segment, giving and overall digit height of 10cm...
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    While this project as now pretty much done, with...

    While this project as now pretty much done, with some tinkering left to do, a large request has come in.
    Back lighting the thing 2 different colours depending on AM/PM.
    I did bit of a head scratch....
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    Digital Analogue Clock

    I was asked to fill an old clock housing. Did a little thinking and made a post about driving a large number of LEDs http://www.picaxeforum.co.uk/showthread.php?29323-Driving-132-LEDs
    Some testing,...
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    He has wet macular degeneration, so big and...

    He has wet macular degeneration, so big and bright and high contrast is exactly what he needs - its where the requirement for white LEDs came from

    as an idea he cans struggle to watch sport a 50"...
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    yeah I know, its an ideal. if its 23:59 20...

    yeah I know, its an ideal. if its 23:59 20 segments will be lit, 10 LEDs per segment, that's the better part of 4 amps presuming 0.02A for each LED if they are all lit at once.
    If the displays are...
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    Oversized 7 Segment Display

    Despite the fact that I still haven't quite finished the last clock I was asked be build (just waiting on one last thing to arrive), I have been asked to build another.
    This time its a digital one...
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    debug also interferes with I2C, use sertxd to...

    debug also interferes with I2C, use sertxd to report info back to the PC or use an OLED/LCD display
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    just ordered one of those scopes, @ 12 quid can't...

    just ordered one of those scopes, @ 12 quid can't go wrong really
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    you will need 7+dp outputs for the displays and 1...

    you will need 7+dp outputs for the displays and 1 input for each display - so no as you would need at least 14, 15 if you needed the DP too, a 20m2 could though.

    actually scratch that, I just...
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    seems we had similar ideas ...

    seems we had similar ideas


    https://www.youtube.com/watch?v=QpaS2nWkU1c&feature=youtu.be
    this actually has 16 LEDs as there is one off shot to indicate PM
    moving to macros for the fade display...
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