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  1. flippineck

    Araldite Rapid, Cyanoacrylate & PCB material.. does it stick?

    Tried to make a cover for a hole in some unknown soft casing plastic, out of a cutout bit of clear polypropylene sheet (a chinese dinner no odle tray) Tried to stick it over the hole with Araldite Rapid which is a 5-min setting 2-part epoxy available in UK. The epoxy stuck fast to the casing...
  2. flippineck

    Type of single phase AC motor?

    No intention to actually wire it up to a light dimmer, was just trying to illustrate. I was more thinking about trying to identify the type of motor, so I could determine exactly what type of electronic modulation options might be pertinent. It's a clouded thing to a degree because I don't know...
  3. flippineck

    Type of single phase AC motor?

    I have a UK mains powered Jebao-brand pond pump. It's motor is a potted resin brick with a cable coming out, and a hole in it for the removable rotor. I have no way of knowing what is inside the resin block. The rotor seems to be a solid cylindrical lump of ferrite-type material threaded onto...
  4. flippineck

    Does anyone know ST62T40B

    Thanks.. I was a bit wary when purchasing the 530, got it for a very low price after telling the seller my worries about passwords / programming, so it's not been too much of an expensive toy to rummage around inside. I guess the best way forward is to invest in a new generator controller, DSE...
  5. flippineck

    Does anyone know ST62T40B

    STMicroelectronics ST62T40B; this is a microcontroller from around 1998 I believe It's in a generator controller "DSE530" long obsolete and unsupported by it's maker Deep Sea Electronics. The normal method of programming different user parameters into this box is by way of using their...
  6. flippineck

    Automotive Warning light help

    Is that bit of yellow (rubber band?) showing the pin that goes to the float sensor? How that pin behaves when the float moves (voltage with respect to ground) would be useful info. Which one is the bulb that warns low brake fluid? Those bulbs are all turned on and off by the row of...
  7. flippineck

    Automotive Warning light help

    On the float switch.. what is present on the opposite terminal to it's 0V/ground/chassis terminal, with ignition on, and reservoir empty? On a non computerised car it would probably be around +12V same as the battery + post It might be different if the sense signal is being generated by the...
  8. flippineck

    Automotive Warning light help

    Could you let us know more details about the vehicle (make model variant year etc), might be able to find a circuit diagram that will help illuminate what's already there. Although it might at first appear more daunting than it really is, it might well be easier to fix what's there. Perhaps...
  9. flippineck

    Small IR gooseneck spot heater?

    Wanting to desolder WSON8 6x5mm chips without damage so they can be read with a programmer off the PCB. I can get them off ok using a hot air station and tweezers but it requires a fair time of heating at around 340'C. They have a big ground pad in the middle of the chip, sandwiched between...
  10. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    The custom sheets actually look reasonably affordable - thanks for that link, have emailed them. Currently waiting for delivery of cheap secondhand monochrome laser printer, and trying out a few local newsagent shop sourced photocopies. Couldn't google up Bishop puppets...
  11. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    Perhaps I should pose the same question a different way.. is it possible the toner used by some older photocopiers, can be reactivated by heat in a similar manner to that used by laser printers? I'm not suggesting one uses inkjet ink directly. I'm suggesting one uses an inkjet-produced print, as...
  12. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    Could certain old style photocopiers work, based on the theory they too used fusible toner i.e. print the design on one's inkjet printer, then take it down to the library and put a coin in the slot for a couple of copies.. assuming one has a library nearby with such a copier? Not sure this is...
  13. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    Yes I've got Kicad loaded up.. you introduced it to me some time ago :-) Just missed a lovely little monochrome laser printer for £27.. missed it by £1. Sure there'll be another along soon.
  14. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    Thanks for the excellent links! Watching a few secondhand laser printers on Ebay now. They seem to be cheaper than I'd feared, likewise toner refills. There does seem to be at least one company here in the UK that does one-offs from artwork at reasonable, hobbyist - accessible prices, will give...
  15. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    Looked everywhere for ages, it really does seem completely unavailable now. Ended up going a different route and using a premade board off, as you suggested, Ebay. One downside of the stuff I remember was, if you slipped a little whilst rubbing, you'd get a tiny crack in the transferred pad or...
  16. flippineck

    'Letraset' type dry transfers for PCB pads chemical etch resist

    Does anyone know if you can still get dry transfer sheets of various electronic component PCB pads? The ones where you place the transfer on top of the plain PCB and scribble over the IC pads etc. and they transfer onto the copper I'm hoping to make up a PCB incorporating a 1.27mm pitch row...
  17. flippineck

    Change 3 phase Steam Boiler to 3 phase Hot Water Boiler?

    Possible to just use one phase on one, single phase, thermostat if there is a supply neutral available? Just leave the other two phases disconnected, unless it causes uneven heating in the chamber? Second thoughts, it might leave live terminal(s) inside the connection box that don't appear at...
  18. flippineck

    Interesting Video On Electricity

    Got me thinking there. As far as I understand.. the field is zero at all points inside the conductor. I don't know if that means the field does not exist inside the conductor, or whether it does technically exist yet at some variant of null.. I'm still amazed that the EM field requires no...
  19. flippineck

    Soldering temperature indicator

    Thermal imaging camera probably a good idea in the light of trials I just tried. I bought a type-k thermocouple for my multimeter, and an IR laser gun thermometer. Fired up soldering iron (small antex one) and looked at the tip temperature with both. The thermocouple was perfect for measuring...
  20. flippineck

    Interesting Video On Electricity

    The electric and magnetic fields inside and outside the wire require no medium to propagate
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