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  1. GPG

    Drive two relays based on input voltage.

    How much current to operate the solenoids? Assume that 12V battery supply is available?
  2. GPG

    Drive two relays based on input voltage.

    Could this be done with one relay that (say) operates at 2.7 and drops out at 2.07 Or even viceversa A description of what you want to achieve would be helpful. What supply voltage to work with would be a start.
  3. GPG

    Looking for flight instruments etc. inexpensively

    Glass cockpit (qv)
  4. GPG

    Questions about UART communication

    Check for floating ground connection to RF module. Logic level jumper ok? No thanks. an obsolete word for scrotum
  5. GPG

    Run this 1.5v pump from a 18650 battery

    PWM the motor, dropping the voltage is wasting power. How much current does the motor draw?
  6. GPG

    Touch sensor to activate light for set amount of time

    You can get interrupted or reflective optical sensors. Google both terms. Also the emitter can be coded to reduce the effects of incident light .Remote controls all do this. Most remote controls output the code on a carrier further reducing incident signals and allowing higher peak power/range.
  7. GPG

    Questions about UART communication

    Can you open the rar file and post that?
  8. GPG

    I need to hire someone for a logic design

    Don't have to use the lens from the mouse. Just the sensor and perhaps a pinhole lens. Or some time ago i used a lens from one of these sort of cheap magnifiers for an LDR light sensor http://www.amazon.com/SE-Loupe-Triple-Folding-Each/dp/B000SV8JAO Some more http://www.dx.com/s/magnifier
  9. GPG

    Looking for flight instruments etc. inexpensively

    Have you looked at automotive gauges.RPM and speed in some cars are driven a little like steppers with a full bipolar step taking 270+ deg.the position controlled by magnitude and polarity of 2 coils current
  10. GPG

    Power Supply

    OP. How much power does each gen have? Single/3 phase? Have they got overcurrent breakers? Got volt or current meters?
  11. GPG

    7-segment display 3-to-8 decoder logic circuit (please help, thank you)

    "No answers will be given, only guidance"
  12. GPG

    Reading Current of Solenoids

    The AD8202 must have a limit on the common mode difference. http://www.analog.com/media/en/technical-documentation/data-sheets/AD8202-KGD.pdf
  13. GPG

    I need to hire someone for a logic design

    Optical mouse sensor? https://www.google.co.nz/search?q=+ADNS-5020&ie=utf-8&oe=utf-8&gws_rd=cr&ei=D5Z2VpDZLITRjAPph4vQCg
  14. GPG

    I'm a Carpenter, not an Electrical Engineer

    http://www.stewmac.com/freeinfo/i-0072/free-wayultradiagrams.pdf
  15. GPG

    Reading Current of Solenoids

    The ground is shared so back emf is impressed on the sense terminals relative to com.
  16. GPG

    Thermostat

    The supply is via the .47μF cap and 560Ω resistor. The AC is then clamped by ZD1 to +24V and - .6V the +24 peaks charge the 100μF cap through D3. Applying a low voltage will not damage anything. The supply is limited to 24V by the zener and current limited by the cap and resistor.. Whether it...
  17. GPG

    Faint display on Aiwa Tuner

    https://www.electronicspoint.com/attachments/002-jpg.23826/ Would look better without the camera shake. Is this as was new, you mentioned it was dimmer.
  18. GPG

    Edgestar ap12000hs-1 thermostat not working

    Obstructed air flow?
  19. GPG

    Questions about UART communication

    rar file
  20. GPG

    Thermostat

    That's its working voltage it will have a value as well
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