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Recent content by Nigel Goodwin

  1. Nigel Goodwin

    Problem with counter in swordfish

    And don't even mention == :D
  2. Nigel Goodwin

    Technics SA-DX940 "Overload" issue

    Unfortunately, the full manual was only available as a printed copy, but the schematic is freely available on-line. I would suggest a possible capacitor failure, such as C774 or C775 - I presume those are to do with the power ON muting?, but it could be elsewhere. It's perhaps allowing the...
  3. Nigel Goodwin

    Faulty heat air gun (dc motor) - problem to locate fault due to Intermittent fault [unrepairable]

    Where I now work (for the last seven plus years) we have a Bosch heatgun, which we use every day for heat shrinking - it was there before me as well, and the owner (and old friend of mine) said he got through numerous cheap heatguns before buying the Bosch, the cheap ones barely lasted a year if...
  4. Nigel Goodwin

    Sump pit water alarm - Kicad 9

    Unfortunately the people using the equipment are generally pretty well non-technical, and are doing a fairly hard and miserable job, working through the night in the pouring rain in mud filled holes isn't a very pleasant experience. So 'errors' are fairly common, such as putting delicate...
  5. Nigel Goodwin

    Need Help with TDA7294 Stereo Amplifier

    Presumably it depends how hard you drive it?, but I assume with no heatsink at all you wouldn't be able to run it at any worthwhile volume - but bolting it to a decent metal chassis might be all that's required?. Here's a link to a video about the Leak Stereo 70, a highly regarded amplifier...
  6. Nigel Goodwin

    Need Help with TDA7294 Stereo Amplifier

    It really depends what you're trying to do?, their output isn't 100W anyway, it's only 60/70W RMS at a fairly high distortion of 0.5%. However, by bridging two of them, thus using four, you could get 120/140W in to 8 ohms - bridging doesn't increase power, it allows the same power to a different...
  7. Nigel Goodwin

    Sump pit water alarm - Kicad 9

    We replaced a commercial float switch, on a pump used by the water companies - the switch was on the end of a rubber cable, in a sealed unit, and they had managed to damage the cable. We managed to locate the manufacturer of the pump, and the float assembly was available as a complete unit along...
  8. Nigel Goodwin

    More fun with ws2812 this time XC8 and CLC

    Modern PIC's have such a bewildering array of configuration options that's it's difficult to get them set correctly, I find it's worth using the MCC to set the options, then cut and paste the section of code.
  9. Nigel Goodwin

    More fun with ws2812 this time XC8 and CLC

    I've stuck my scope on a working example I've got here, using a 16F18446 - although I'm finding it hard to sync to - I did eventually manage to get a stored frame, and the pulses are about 300nS, and the gaps just under 1uS. So 800nS and 350nS sounds about right. Unfortunately, I can't seem to...
  10. Nigel Goodwin

    More fun with ws2812 this time XC8 and CLC

    Same thing, turn skew OFF on RC2 :D - assuming the processor in question has skew control?, the skew is an I/O pin function, not a peripheral one.
  11. Nigel Goodwin

    Epson crystal oscillators

    OK, bit of an update, I've just removed the xtal oscillators and MAX232's from the last four boards for the guy next door :D He's been pushing the German company who manufactured the boards (using the last few PCB's from the company they took over - they have neither the gerber files for the...
  12. Nigel Goodwin

    More fun with ws2812 this time XC8 and CLC

    Most modernish PIC's have skew control, and it's ON by default - if you're running fast SPI this messes it up, and you need to set it to OFF for the SPI pins.
  13. Nigel Goodwin

    Impact of Tariffs on PCB Fab

    Useful if you're hungry :D
  14. Nigel Goodwin

    More fun with ws2812 this time XC8 and CLC

    Some of them refer to the discontinued XPress :( Here's an example off my computer:
  15. Nigel Goodwin

    More fun with ws2812 this time XC8 and CLC

    Sounds a pretty silly idea, why not just download the working MicroChip examples?.
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