Recent content by morglum

  1. M

    Calculating Real Power Use by Accounting for Phase Shift - Energy Monitoring

    Good product there, I dont have any good reason not to use it actually B)
  2. M

    Calculating Real Power Use by Accounting for Phase Shift - Energy Monitoring

    Awesome post there- thanks for it. I'm really not sure I want to build it given that TED goes for only 200$, but being able to monitor all the breakers is what has me interested. The open energy monitor , whichs uses an arduino board seems to be a good and relatively cheap option. It...
  3. M

    Calculating Real Power Use by Accounting for Phase Shift - Energy Monitoring

    Hi, That was exactly my question - is there a way to take phase into account using a second DS2438? I just answered myself though: ds2438 can only measure DS current. I'll go look at the arduino. cheers
  4. M

    Calculating Real Power Use by Accounting for Phase Shift - Energy Monitoring

    Hey all, I'm considering building an energy monitor using CTs for sensing the current and outputting a voltage ds2438's for reading the said voltage. The problem is that power=voltage*amperage only works with resistive loads, not motors, fridges, etc.. (Awesome explanation here) I would...
  5. M

    Low Power PC For Home Automation

    I agree that this article *really* coudl use some benchmarks, but I guess 3.33 GHz isnt something to spit on :)
  6. M

    Low Power PC For Home Automation

    toms hardwarel built a powerful 25W computer using an i5. If you want quiet, Electrodacus from the silentpcreview forum found a fanless 130W power supply and sells it for 40$. You'll also need an AC-DC power brick (like one for a laptop), he refers to a li-shin one you can get on ebay for 40$...
  7. M

    Low Power PC For Home Automation

    What about a SheevaPlug? 5 watts 1.2 GHz ARM cpu 512 MB ram etc... 99$
  8. M

    DS18S20 has errors in xAP Viewer

    Ok. Just to make sure, by "Have you utilized the 1-wire native Maxim technologies application to test your communications?", did you mean OneWireViewer or something else? Also, Could the temperature sensor could have a communicatio nerror but not the ds2406? They are on the same network...
  9. M

    DS18S20 has errors in xAP Viewer

    My DS18S20 is on parasitic power, could that be why6
  10. M

    DS18S20 has errors in xAP Viewer

    Hey Pete, Thanks, I was just trying to maximize my chances :) I see both sensors perfectly in both OneWireViewer and xapmcs1wire. However, the changes on the DS18S20 dont seem to reach Homeseer, and I see the above-mentionned error in XFX Viewer.. Changes in the DS2406 do reach homeseer...
  11. M

    DS18S20 has errors in xAP Viewer

    Hey everyone. I'm building my first one-wire network with two sensors (one DS18S20 temperature sensor and one DS2406 to be used as a relay). my setup: I'm using HomeSeer 2 I use xAP hub, xapmcs1wire and mcsxap to communicate between the sensors and homeseer. I use xfx viewer to monitor...
  12. M

    Do I really need a transistor to drive my solid state relay?

    damn :) Huge thanks for finding this out. I'lll try oune of those tsoc packages then
  13. M

    Do I really need a transistor to drive my solid state relay?

    Thanks BLH for helping me through these newbie steps. I'm only just learning what "surface mount device" is, so I'm coming a long way. Watched a few youtube videos on soldering SMD's already... ;) I had a look at the form of the DS2438 and it's a "8-pin SOIC". Someone on ebay sells these...
  14. M

    Do I really need a transistor to drive my solid state relay?

    Thanks guy for your help. 1) For the resistor/amp calculation, I think I understand. I'll let you know if it works. 2) Re: the DS2413. I have Hobby Board's TSOC DS2413. I'm not sure what a PCB designed to hold a surface mounted part looks like. Would you mind giving me a link ...
  15. M

    Do I really need a transistor to drive my solid state relay?

    Thanks BLH, I appreciate your help. Just to make sure, just replacing the LED with my relay and the 330 ohm resistor with a 1000 ohm resistor doesnt sound like a really bad idea, correct? Also, quick newbie question if you don't mind. What's a good way to connect my DS2413? There's no way I...
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