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  1. kellys_eye

    Can you identify this for me please?

    re the OP's other post querying the responses given above. We are only trying to help. Posting a gazillion pictures that can't be seen due to poor quality/focus etc isn't our fault and goes nowhere to helping you resolve your own issues. This has nothing to do with being a newbie or knowledge...
  2. kellys_eye

    Unknown SOT23 - need help identifying

    Have you got a wider view of the board where its mounted? Preferably with details of the tracks interconnecting to other components? If it is a simple transistor then practically anything of the right polarity would work, including thru-hole parts soldered to the board pads - just to get the...
  3. kellys_eye

    Pedal powered generator

    A fit human (male?) might generate a few hundred watts but kids are only likely to do a lot less and for a lot shorter time. Better idea would be to connect the generator to a simple variable load and bar-graph type display and see if you can encourage them to 'reach the top' of the display...
  4. kellys_eye

    Replace E6A2 -CS5C encoder with E6A2 -CWZ5C

    Depends. The only difference is the number of pulses per revolution. If those pulses are counted electronically and used for position reference or other positional accuracy function then you will have to adapt the software to take into account the extra pulses (i.e. divide by 3.6). Without...
  5. kellys_eye

    Motor peculiarity

    Sadly I have no spec or other details for the motor so nothing with which to make readings or comparisons.
  6. kellys_eye

    Motor peculiarity

    Without the appropriate test equipment (growler and/or magnet tester) I'm having to declare the motor BER - too much time spent on it and no results. Still, for such a simple device it has caused me more trouble than most things 'electronic' that I've had to tackle in my past! Must have had...
  7. kellys_eye

    Motor peculiarity

    Timing can't change as the brushes are fixed to a 'keyed' plate. Bearings are free-running, clean and no noise/vibration. The motor runs at 1.5A no-load and I can stall it to 8 or 9A (either direction) - it gets hotter of course - but it 'should' give a lot more torque (it's from a golf...
  8. kellys_eye

    Motor peculiarity

    I have a permanent magnet 12V motor that simply refuses to take current! I can stall it at 8A but an identical motor draws 30A+ under stall conditions - yet I cannot see or find anything wrong with the '8A' motor..... New brushes, no damaged rotor windings (that I can see or measure anyway)...
  9. kellys_eye

    I can't find any website will tell me what my transformer goes to or is good for

    Sounds like an old modem supply.
  10. kellys_eye

    Can you identify this for me please?

    That's a thermal switch (or cut-out) with, what appears to be a set of change-over contacts. Oh, and congratulations on making the important part 'out of focus'!!!! The numbers on the side!!!
  11. kellys_eye

    I can't find any website will tell me what my transformer goes to or is good for

    A transformer like yours is only good for powering something that requires the stated voltage and maximum current. If you wanted to experiment you could use it as a DC source to a regulating circuit to get 'any' voltage (within defined limits) from the output.
  12. kellys_eye

    Binary analog stick input?

    If you want to have a 'centred' signal then yes, you will need the mid-point voltage from some source - have you established what the actual voltage span is yet?
  13. kellys_eye

    Binary analog stick input?

    The axis go from -x (bottom?) to 0 (joystick middle position) to + (top?). If the span is set by the logic supply voltage (i.e. 5V) the -x will be 0V midpoint will be 2.5V and +x will be 5V. So..... -x will be 0V (ground) and +x will be +5V. There is no way to simulate any intermediate...
  14. kellys_eye

    Binary analog stick input?

    Yes, but you really need to discover what the actual voltages are at the extremes of each axis movement of the analog controller to be sure.
  15. kellys_eye

    Remote control outlet overclocking

    Not reliably..... it may be possible to add an external antenna to them but this would make them 'ugly' and you'd have to dismantle them to access the electronics - and given the live voltages present in the device I wouldn't recommend you do this. Similarly you might be able to increase the...
  16. kellys_eye

    Binary analog stick input?

    Not specifically resistance. It may be easier with resistors IF the actual X-Y position voltages are 'weird' i.e. 4.3V and 3.7V (two random figures chosen as an example) but they may equally be 0V and 5V which can be derived quite readily from most logic interfaces.
  17. kellys_eye

    How to use DC power supply to power AC powered appliances?

    Whilst true, that statement doesn't take into account the inverter operating frequency which, for DC-DC converters, is usually in the 100's kHz or even MHz region whilst your standard AC mains source is only 50 or 60Hz and not compatible in this sense.
  18. kellys_eye

    Binary analog stick input?

    The analog stick will have some form of resistance (value) for the extremes of the axes which will have to be replicated at the switches of your 'digital' joystick. i.e. the values of x and y need to be measured for the relevant stick positions and the mechanical switch you use has to 'put'...
  19. kellys_eye

    Issues with vintage JVC CRT TV

    There's probably a good reason the set was in a thrift store to begin with........ I have no particular issue with people using old CRT sets - nostalgia has its place in life too - but if the set is receiving on other channels it should receive on your chosen channel too unless you've either...
  20. kellys_eye

    Could not scan for EEPROM, Product: 24CW64X, 4-balls

    Check section 3.3 of the data sheet for programming the HAR (Hardware Address Register) to establish the values necessary for I2C detection. Without pre-establishing these settings the device will be 'random/unknown'.
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