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  1. kellys_eye

    How to measure diesel tank level by pressure sensor, tank area and diesel paramenters

    Musk will only deliver what the US taxpayer can be conned in to handing over the cash for....... on a open-ended timescale too.
  2. kellys_eye

    Can't find CR2032 3V rechargeables, safe to use 3.6V LIR2032?

    The CR2032 is usually only used in applications that draw very little current and, as such, run for 'years' without interruption. Under which circumstance I can't see why you need to make an extra effort for what would (normally) be an isolated occasion. Equally, the application of the CR2032...
  3. kellys_eye

    How to measure diesel tank level by pressure sensor, tank area and diesel paramenters

    LOL. First time I've seen it used in the correct context! I don't know about others but even in a family car it's relatively simple/easy to determine when you're ready to 'fill er up'. On board car fuel metering isn't 'accurate' by any measure but seems to be more than adequate for the...
  4. kellys_eye

    Help wiring blower to signal generator!

    The signal generator..... yes, such a PSU would work - you may well have an old laptop adapter lying around that you could use. Many laptop adapters have around 19V output which is within the recommended range for that S.G
  5. kellys_eye

    Help wiring blower to signal generator!

    No - you need a 0-10V (or a PWM signal) on the red/blue wires - with red being the 'high' side I presume (don't take my word for it though!). Your signal generator says that it has a 0-10V range and I presume the connections for it are along the top connector (can't see all the details from...
  6. kellys_eye

    Help wiring blower to signal generator!

    Got it. The plug on the motor doesn't match the wiring diagram though - not enough pins! But it appears that you connect AC mains (120V) to the white/black wires and the output of the signal generator to the red/blue wires. The red/blue accept either a PWM or a varying DC voltage to control...
  7. kellys_eye

    Help wiring blower to signal generator!

    Connect it to the signal generator to do what? It won't power it. I can't think of anything that could be applicable to the motor/signal generator. What's going on?
  8. kellys_eye

    How to measure diesel tank level by pressure sensor, tank area and diesel paramenters

    That's an interesting proposal, thanks for outlining it Hevans. With all vehicles having ODBII (or similar) installed it should be simplicity to get a journey average for mpg and transmit this at source/destination to get 'fuel used'. In fact, coding ODBII to (say) Bluetooth to monitor...
  9. kellys_eye

    Voltage drop on newly installed 120 receptacle

    GFI devices measure current going 'in' and current flowing 'out' - under ideal conditions these will match and no fault condition exists. If the measurement of the in/out differ then the GFI assumes some of the current is flowing to earth and trips the breaker. It has nothing to do with volt...
  10. kellys_eye

    LCD display disappears

    Mount the contrast pot (change it to a preset) a LOT closer to the display panel - preferably directly on the pins of the edge connector. Having the contrast control on 'flying leads' and amongst that rat's nest of wiring can't be a good thing. If that doesn't work, try using a new display.
  11. kellys_eye

    SPDT and SSR control

    No diode. Will work as you show (assuming 'live out' is the common terminal of the SPDT switch - which I guess it is).
  12. kellys_eye

    Got any ideas for using an old fridge?

    Checks show that the compressor needs replacing so 'refilling' is only part of the problem. Thanks for the suggestions - I think :p - worth a laugh if not some further thought in some cases. I'm not sure if silver soldering will put up with the pressures involved - it should do - but all the...
  13. kellys_eye

    Sound board not working

    Sorry, but that's four totally pointless and useless pictures! First, an exposed wire - unless it was on the mains voltage side - shouldn't give anyone a 'zap'. What power pack does it use (voltage/current output) and are you sure it's putting out the right voltage? What test equipment do...
  14. kellys_eye

    Help with power supply

    No mention of how long the OP wants to actually RUN the system for on batteries....... This makes a significant difference to the solution.
  15. kellys_eye

    How to measure diesel tank level by pressure sensor, tank area and diesel paramenters

    My question would be - why do you want to make a simple task difficult? Will it be an improvement on existing methods? Will it be easily reproducible? Will calibration be a significant issue? Is such accuracy required? If content accuracy is a requirement then measuring fuel in and fuel out...
  16. kellys_eye

    Got any ideas for using an old fridge?

    Fart gas torture chamber? Opaque fish tank? Walk-in wardrobe? iCoffin? But given its insulation properties it seems more suited to temperature-controlled solutions - the wine rack idea has a lot of merit as would a humidor but I doubt I could afford to fill it! If it wasn't for the fact that...
  17. kellys_eye

    Got any ideas for using an old fridge?

    Too expensive - cheaper to buy a new fridge! If I was baking bread for the local community maybe!!!! Hmmm.. possibly. We have considered using it for dry goods storage but that sort of gets away from the fact it's a 'super-insulated box' that could be heated/cooled for a specific purpose. :p...
  18. kellys_eye

    Got any ideas for using an old fridge?

    Due to a crappy company selling me a large (550 litre) storage freezer then 'going bust' and not honouring the warranty (it's now defective) I'm the 'proud' owner of a large storage freezer that doesn't work and is BER. It's going to be a PITA to dispose of (I have to take the door/frame off...
  19. kellys_eye

    Need some help

    make? model? as they say - buy cheap, buy twice. No. it's a place to start.
  20. kellys_eye

    How to match this gate driver to this mosfet?

    My bad - I assumed the 'up arrow' was referencing the 5V supply the opto-coupler was also using.
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