Recent content by danners430

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    Polarity Detection

    That would work perfectly - I'm guessing I could also use the above circuit with the LED driver, as D01 would protect it from the reverse voltage?
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    Polarity Detection

    It has to be said, I'm not interested as such in detecting the amplitude or anything - the entire circuit won't work until at least 5V (allowing for the voltage overhead for my 3.3V regulator), so below 1.2V isn't too much of a problem! And remember that at the 12-20V range, I'm going to he...
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    Polarity Detection

    Sorry, I meant diode D2 in my schematic :-) Aye, that was the original plan - however would that work fine with lower voltages such that you find at analogue 0-12V levels, as well as the high frequency 12-20V DCC signals?
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    Polarity Detection

    Would the diode not protect the optocoupler branch from reverse voltage?
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    Polarity Detection

    Haud on, I think I'm having a classic Tech Support moment - soon as I posted this I had a eureka moment... could anyone confirm if this would work? This is a diagram of my DCC input (the connection between the track and the microcontroller, sensing the DCC signal)... as the optocoupler is, by...
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    Polarity Detection

    Hey guys, Is there a way to detect polarity? I'm designing a custom DCC function decoder (yes, WestAust...), which is going perfectly fine... except now I've realised I might wanna see if I can make it work on DC too. A little basic background - DCC is a communication protocol for model...
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    Using 2-lead bi-colour LEDs with PICAXE

    That does make a lot of sense, Hippy... :-) I suspect it's just my systems engineering mindset coming through into my hobby - too much work and not enough play 😂
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    Using 2-lead bi-colour LEDs with PICAXE

    I think the easiest way to describe my (completely bizarre) mindset is I like to have "dedicated" solutions - so a central "processor" - a microcontroller etc. - which does what it's designed to do, process & controll; and specialised "independent" chips, such as the HT1632C, doing specifically...
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    Using 2-lead bi-colour LEDs with PICAXE

    I know, I know... Like I said, I'm wierd - for some reason my brain isn't a fan of the multiple PICAXE solution. Perhaps it's because I'm "wasting" processing power in a certain way...? It's a very good idea, and one I would use if it came to it - for some reason I just can't seem to "like" it...
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    Using 2-lead bi-colour LEDs with PICAXE

    Like I said - I'm a wierd twit :LOL: It's just me, for some reason I'm not a fan of distributed processing. Please don't ask why - I'll happily do it if nothing else works, but I always try and find another solution... just my wierd brain!
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    Using 2-lead bi-colour LEDs with PICAXE

    I had feared as much... multiple modules would obviously work well, it would just be messy (in my mind - I'm a wierd character!)... I'll see what comes of the offer of custom 3D-printed mounts for the 3-lead LEDs... if that works I can go back to my original plan to use a bog-standard LED matrix...
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    Using 2-lead bi-colour LEDs with PICAXE

    Morning folks, Sorry for the late reply, but I got one email notification about a reply and never got round to opening it... unfortunately busy working :-( The Charlieplexing does seem like a good idea... but I see the problem of having large numbers of LEDs connected to an array, meaning very...
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    Using 2-lead bi-colour LEDs with PICAXE

    I'm afraid I tried that... that's what the aforementioned Dremelw as used for :-( The panel I'm using is constructed of 9mm ply (because it's what was available, and the model railway club couldn't use the piece for anything else as it was slightly warped). I used LED mounts which fit through a...
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    Using 2-lead bi-colour LEDs with PICAXE

    After two hours with a dremel, soldering iron, pliers, snips and lots of four-letter Anglo-Saxon words, I can most definitely confirm that is the case!! :LOL: The problem is that they come out the bottom of the LED moulding, and immediately "swing" outwards to beyond the outer limit of the...
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    Using 2-lead bi-colour LEDs with PICAXE

    Yep, that's what I originally planned to use when I wanted to use the HT1632C - I went out and bought some 3mm bi-colour LEDs with 3 leads (2 anodes and a common cathode). That would've worked perfectly fine using a normal matrix driver... But when they arrived I discovered the legs were too...
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