Homemade EVP meters.......
Posted 12 January 2006 - 02:15 AM
Posted 12 January 2006 - 02:10 PM
Posted 13 January 2006 - 01:51 AM
Posted 09 April 2008 - 06:28 AM
.I don't know if this will help you, but there is a DIY emf kit. here are details found at http://www.lessemf.com/kits.html :..TRI-FIELD METER KIT.Build Your Own Multi-Purpose Meter ..Three separate field sensors to provide a really cool readout on two Sci-Fi styled LED bar graphs! Utilizing the latest technology, including Hall Effect sensors, you can walk around your house and actually "SEE" these fields around you! Can detect the magnetic field of the earth...THAT'S sensitive! Also detect radiation from monitors, TV's, electrical discharge, and RF emissions. You will have fun finding these fields and at the same time learn the technology behind them. ..Three position selector switch that lets you select which type of field you want to detect: either RF, DC magnetic, or electric. Display consists of two LED bargraphs, one at the top and one at the bottom. These indicate the relative strength of the field you are detecting. All in all, it’s a great way to learn about the use of electronic components as sensors and own a little piece of sci-fi at the same time. A great teaching tool for kids of all ages; show them the invisible fields all around them and learn about electronic circuitry and soldering. ..Detect RF from your radio transmitter, computer monitor, or cell phone. .Pick up the field from magnets around your house, even the earth! .“See” the charge on a staticly charged hairbrush or comb. .Learn how to use electronic parts as sensors. .Sense different magnetic poles! .Runs on 4 AAA batteries, not included. .Small, handy size for portability. .Fun LED displays. .Single Axis
Yes it is possible to build your own emf meters but it is not atall easy...In our group we have two members that are qualified radio amateurs (i am one of them) and three of us have a background in electronics design, prototyping and electronics test engineering and we are struggling to build an effective sensor and pc interface...Calibration of the device and making it sensetive to the frequency range we need is the most difficult part. We are trying to build a wide frequency sensor that ignores fields created by house wiring (50hz UK and i think 60hz USA). ..We can build them with different frequency ranges that are selectable but we are trying to make it idiot proof...the thought that someone has made an emf meter from an old walkman makes me shudder, surely that would be wildly inacurate...If you just want a basic meter your better off buy one that will be calibrated. but if youy do find a circuit diagram or instructions i would be very interested in seeing it
Posted 09 April 2008 - 10:01 AM
Posted 16 September 2010 - 08:28 AM
.I got the impression from the show, and my own idea, that it was just the plastic shell of the walkman that he was using. Plus headphones for audio output seemed pretty nifty..I don't think he literally built it out of the parts of the walkman (or at least only). He isn't Macgyver after all...I personally think the easiest way to get the walkman one is to buy a reasonably priced EMF meter, take the plastic shell off of it, and place the electronics into the walkman. Should be effective ^^
the thought that someone has made an emf meter from an old walkman makes me shudder, surely that would be wildly inacurate...
Posted 16 May 2012 - 09:52 PM
Edited by kenwhite23, 16 May 2012 - 09:53 PM.
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