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  1. Robertc65

    Video Distribution Amplifier

    Thanks for the info...... Rob
  2. Robertc65

    Video Distribution Amplifier

    Thank you for the reply. If it will help I will make a circuit board for this project. Can you explain the ground plane in a little more detail? I don't really understand it. I can't leave one side of the board unetched can I? My traces will be on the bottom. I don't need any traces on top. What...
  3. Robertc65

    Video Distribution Amplifier

    Hello. I am wanting to build a video distribution amplifier so that I can send the composite video signal from a single Camera to multiple TVs or devices. Radio shack has their video amplifier for $50 bucks or so but I need one for each of my 8 cameras and that will get to expensive. I...
  4. Robertc65

    Controlling a Relay via an LED Circuit

    Thanks for the info Ashtead. I like the idea of the opto-coupler. I now need to figure out how to build the actual relay driver circuit that will be switched on by the Transistor side of the opto-coupler. Do you know if there is a good example of a relay driver circuit like this somewhere...
  5. Robertc65

    Controlling a Relay via an LED Circuit

    What is an LDR? I have never heard the term. I'm guessing "Load ? Resistor" Not sure. I don't have a schematic unfortunatly. In most cases I don't think I could do with out the LED. As far as looking at what drives the LED and trying to determine how much current is available I was hoping to...
  6. Robertc65

    Controlling a Relay via an LED Circuit

    I am always looking to automate things in my house and often times it would be helpful to be able to control a relay based on the status of an LED. For example I just purchased a wireless driveway automobile monitor and I would like to tie it into my homeautomation system. It has an LED that...
  7. Robertc65

    How to Modify an X-10 WS467 Wall Switch

    I have a bunch of X-10 ws467 wall switches laying around that I would like to modify so that they can drive a relay. They are designed to drive a 60 watt incandesent light with the use of a triac. The triac won't drive motors and non incandesent light which is why I want to use a relay. Has...
  8. Robertc65

    Outdoor Light Status Indicator

    Thanks for all of the ideas. That is just what I need. I must be brain dead. I'm was not  thinking that an LED is really a diode. I don't have to be concerned about the voltage drop. I have a 6 week old baby at home who has proven to be nocturnal. As a result I have been very sleep deprived...
  9. Robertc65

    I want to turn off all my phone ringers.

    Thanks for the reply. Yea I would like to do it via PC control using a modem. I'm not talented enough write all the code to do this so I guess I'm looking for a program that is already out there. Like I said before Homeseer will do it but at quite a cost. I need to do more searching. I image...
  10. Robertc65

    I want to turn off all my phone ringers.

    Is there a way to convert a telephone ring signal into something I can pump into my intercom system AUX line input? I want to turn off all my phone ringers and just have a very pleasant sound come from the intercom speaker in each room when the phone rings. Ultimatly I want it to announce who is...
  11. Robertc65

    Outdoor Light Status Indicator

    So how much voltage will be going to my LED in this type of circuit while using a bridge. I don't see anything here that limits the voltage down to below 10Volts or so? I quess I just don't understand.
  12. Robertc65

    Outdoor Light Status Indicator

    Do the circuits you posted use a typical 1.5 volt LED or are you refering to an LED designed to run at 110 volts? Yes I agree Audioguru I would not be happy if it were blinking so I like the idea of a full wave bridge also. Thanks Rob
  13. Robertc65

    Outdoor Light Status Indicator

    Audioguru, No offense intended just trying to be funny. I  also used to make pipe bombs and such but you sure can't do that anymore without people over reacting. My electronics experience consists of 13 years repairing consumer electronics equipment which I thankfully quit doing before you...
  14. Robertc65

    Perimeter sensor

    tnt2k, Thanks. I did see happen upon this link a while back and it's one of thhe placed I found out about leaky coax in the 1st place. I guess what I should have asked was Has anyone ever built a DIY leaky coax perimeter rig? It sounds pretty high tech using sophisticated signal processing...
  15. Robertc65

    Perimeter sensor

    I posted a while back asking if anyone had heard of using leaky coax cable and associated circuitry for use as a perimeter sensor. I just wanted to throw it out once more. Thanks Rob
  16. Robertc65

    Outdoor Light Status Indicator

    Hey audioguru, Have you never blown anything up just for fun? Are you afraid of a little popping sound or just don't want to blow 20 cents on an LED experiment. You seem a little rigid. Lighten up, The book is not always right. I changed my spec. I have decided to migrate my 6 outdoor light...
  17. Robertc65

    Outdoor Light Status Indicator

    Basically each circuit will power either 2 or 4  150 watt flood light bulbs. I do plan to use an LED as the indicator so the 1.9volts is the maximum voltage drop I'll need across the secondary. I work with computers for a living and have plenty of junk around so I'll scavange a few to see if I...
  18. Robertc65

    Outdoor Light Status Indicator

    Thanks for the suggestion. I searched for a 30mm toroidal core and found that I could easily buy them in lots of 1000 or more from any number of questionable offshore manufactures, however I just need a few. I checked allectronics.com and digikey.com. All electronics a a few cool toroidal...
  19. Robertc65

    Outdoor Light Status Indicator

    I want to mount an LED or some sort of  Lamp on each of my switch plates that control outdoor lights so that I can tell if they are on or not without having to look out the windows. If all of my lights used a single 2way switch this would be easy but all use 3way switches. On te switch which...
  20. Robertc65

    Leaky Coax Perimeter Sensor

    Has anyone ever tried to make a DIY Leaky Coaxial Perimeter Detection System. I would like to be able to detect if anyone crossed the perimeter of my property in or out. I have about an acre and figure it's a great way to know if my kids left the yard or someone came in. The systems I found...
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