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  1. kellys_eye

    block diagram

    Bit of a conflict in the question.... Which is it?
  2. kellys_eye

    Broke a Custom Hardware's Power Cord/Supply. Help Me Find a Replacement Plea

    Go to eBay - search for "15V 1000mA" and you'll get over 70 listings for PSU's that will work. Find one with a plug the matches yours. It's not 'rare' - in fact it is a very common size.
  3. kellys_eye

    BitVoicer Help

    dunno??? does it have an adjustable level control? If so, try it at three or four positions around the span of operation - but speaking into the mic and observing the audio level (as per page 71 of the bitvoicer manual) you should be able to adjust it so that normal speech shows a decent...
  4. kellys_eye

    block diagram

    Home/school work?
  5. kellys_eye

    BitVoicer Help

    Your headset mic will not have an amplified output (as the electret boards from Adafruit et al have) and the board cannot detect the small levels coming from your headset mic.
  6. kellys_eye

    Bad Linksys router; how can I connect to its serial debug port?

    'factory reset' - is that as 'good' as re-flashing the EPROM?
  7. kellys_eye

    Switching PSU drops 5v.

    Screenshot will do. Not Kicad but most others will also work.
  8. kellys_eye

    BitVoicer Help

    Which version of Adafruits electret are you using? Does it have the same specifications as the module recommended in the Bitvoicer manual? Have you connected the microphone module correctly and adjusted the level control?
  9. kellys_eye

    Switching PSU drops 5v.

    On most SMPS the output regulation is set by the monitoring of only ONE of the output supply rails so you need to check all the power rails (load them up) to see which one is actually pulling the 5V down. Equally, the SMPS has (probably) current monitoring which, if the sensing component...
  10. kellys_eye

    Controller board for IPL laser

    What "12V cables"??? The fluctuating 5V is a problem. It should be steady regardless of the load. Your two issues seem to be: 1. dodgy 5V supply line 2. missing 3.3V supply line. If the 3.3V is being derived from the 5V line then that might explain why you have a 3.3V issue. We need to...
  11. kellys_eye

    Too many printers - not enough ports?

    ???? Any USB hub will (should) work. What's the problem? We have three (sometimes four) printers connected to our office PC via a USB hub and simply select which one to print from via the 'print' menu - as we've always done......
  12. kellys_eye

    Talking to my phone

    I'd be more worried about it LISTENING than replying!
  13. kellys_eye

    Bad Linksys router; how can I connect to its serial debug port?

    What was 'bad' about the router that made you want to investigate the software within? The manufacturers are always offering software upgrades for these types of things and the procedure for doing so is well documented so re-flashing the device would surely fix any 'soft' issues? The only...
  14. kellys_eye

    Garmin GPS overheating problem

    Grrr... one thing that grinds my gears is manufacturers that use the 'buy another (one of our) unit replacements', especially if they use the 'sorry, no schematics/spares' line (liars!) and I've even repaired marine equipment free of charge just to give the manufacturers the finger for that kind...
  15. kellys_eye

    12 MHz oscillator with a Voltage range 120V

    Why 12MHz? You are basically asking for an RF oscillator - many circuits exist and are easily Googled.
  16. kellys_eye

    Live Audience Response System

    Make a chain of 300 resistors with shorting buttons across each of them. Use the chain as one half of a potential divider who's output feeds a simple bar graph generator (LM3914-based?). The more buttons pressed, the lower the resistance, the higher the 'bar' goes. Rinse and repeat as...
  17. kellys_eye

    Computer mouse circuit repair

    The place marked TP1, right beside the switch, is where you can connect one wire.......
  18. kellys_eye

    Trans former rewind

    Transformers have VA ratings (basically their wattage) and the volts/amps you can extract always remains the product of the two. If you had 30V at 100mA originally then the transformer was 30 x 0.1 = 3W. The secondary can be 'any' combination of volts and amps that don't exceed 3W...... so 10V...
  19. kellys_eye

    Help

    The voltage and current necessary to create a short will depend on the 'gap' between the breaks in the conductors and the availability of material to be 'melted' across it. What you propose isn't a recommended method! The device used to detect faults in cables is called a Time Domain...
  20. kellys_eye

    Regency air band scanner schematic

    http://www.n4mw.com/Regency/tmrxhsm.pdf ...is all I can find. Is there a problem with the set?
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