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  1. KTW

    Getting USB power from car's fuse box

    You could run it directly off the battery and put your own inline fuse on it without disturbing anything at the fuse box. All you would need is a 2 or 3 amp fuse. or Go with a piggy back fuse adapter if you have 12 volts at a spare fuse slot...
  2. KTW

    LED lamp isnt working, but want to try fix it!

    That's the tricky part. The battery has to match the charger and it's probably made in china. Are there any specs on the light or the charger?
  3. KTW

    LED lamp isnt working, but want to try fix it!

    More than likely the battery won't take a charge any longer. You'll need a volt meter to test the output of the charger and the battery voltage. If the charger is putting out voltage to charge the battery then the battery is toast and you'll need to replace it.
  4. KTW

    Should I be able to use this battery with these LED's?

    You can use that but a lower voltage will enhance the life of the lights. http://www.ebay.com/itm/New-Zippy-Compact-2200mAh-3S-11-1V-25C-35C-Lipo-Battery-Pack-RC-XT60-XT-60-USA-/162272461478?hash=item25c83142a6:g:-VIAAOSwA3dYIIFz What is your application for these lights?
  5. KTW

    Car Dashcam Battery Replacement

    There will be batteries inside that envelope that should have identification.
  6. KTW

    Fuse in car bluetooth receiver keeps blowing out

    More than likely inside the receiver, you can check the power supply and make sure it's only getting the 5 volts required.
  7. KTW

    Fuse in car bluetooth receiver keeps blowing out

    Resettable 2.1 amp Fuse If it was working in the car for a time I would guess that it's a problem with the reciever. What was the duration, a minute, a day?
  8. KTW

    Fuse in car bluetooth receiver keeps blowing out

    Did it ever work after reinstalling it or did it just start popping the fuse?
  9. KTW

    Hydraulic Lift Desk Drawer

    A linear actuator with a reversing control would do that. https://www.amazon.com/IRUI-Controller-Adjustable-Reversible-Actuator/dp/B01H2AFYO2/ref=sr_1_2?ie=UTF8&qid=1477742635&sr=8-2&keywords=reversing+linear+actuator
  10. KTW

    Intercom replacement questions.

    One thing I see is the in and out appear reversed looking at the two boards.
  11. KTW

    Would this simple circuit work?

    You could be shorting your battery with that. It's possible you have a switch like this which is on from left or right and off in the middle. You can test it with a meter if you have one.
  12. KTW

    Open door buzzer circuit help

    You can buy a cheap delay timer off ebay ready to go.
  13. KTW

    Open door buzzer circuit help

    Have you considered a door closer?
  14. KTW

    PIR and LDR light circuit

    The transistors are cool to the touch, the light panel has a built in resistor , thanks for having a look.
  15. KTW

    PIR and LDR light circuit

    The supply is rated at 2 amps, the light Output: 12V @ 0.05A (0.6W/LED )
  16. KTW

    PIR and LDR light circuit

    Thanks Steve, the light panel is one of those 12 volt automotive direct plug in multi led type. The power supply is a 12 volt wall adapter. I missed the resistor when I sketched this schematic but I do have one between the PIR and the base of the transistor. I've since corrected it on the...
  17. KTW

    PIR and LDR light circuit

    I put this together and it works just the way I want but it may need tweaking if I missed something. Anyone see a problem with this as is? Thanks.
  18. KTW

    Underground Wires Damaged

    You can use telecom buried service wire. Hand bomb it with a shovel or dig with a small machine, place it in conduit. If you dig get locates for other services.
  19. KTW

    Problems with RGB & LED tape light w/ Power supply - Buzzing/Pulsing

    Is your RGB compatible? https://www.magnitudeinc.com/service-support/compatible-dimmers/
  20. KTW

    How can i add a trigger to this circuit to make it not electrocute the user?

    Use a blinking led.
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