Soldering question/problem


My arducopter has been flying great. Very stable and very manueverable. Thanks for all your help so far. 

When I first built my arducopter,  the DIY magnetometer happened to be temporarily out of stock, so I bought the Sparkfun magnetometer and wired that into the 3v, etc. But now that I have received the DIY magnetometer, I would like to use that instead, so I have removed the Sparkfun magnetometer.

When I'm installing the DIY magnetometer, the manual says to move the solder blob jumper over to the 5V side. It's quite small and I have a bad tremble, but I think I did it. The solder is definitely connecting the 5V side and there appears to be a gap on the 3V side.

Now, I have a really dumb soldering question...

When I checked it with my VOM, I expected that there would be 0 connection across the gap. i.e. I expected my VOM needle not to move at all. However, the needle is moving, indicating that there is a connection. It's about half the intensity as the "connected" 5V side of the jumper, but there is a connection. Am I right in thinking there should be no connection at all across the 3V gap? Or is it correct for there to be some level of connection even though I've moved the solder blob to the other side?

Sorry for the dumb question. I just want to make sure I'm thinking about this right before I start trying to repair the soldering I've done so far.







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Replies

  • remeber that there is a voltage regulator on board, it has a diode in it
    so maybe you messured the diode

    try to messure in the opposite direction if it says infinite it's allright
    if not you need to resolder. best way to do this is to use desoldering wire and then add solder on the 5V side
  • 3D Robotics
    Typically you'd use the continuity checker on your mulitmeter, not resistance. I can't tell from our comment whether you were measuring voltage or resistance, but if it was resistance (as it should have been), you should measure ~infinite resistance (different VOMs display that differently; mine shows that as 1,000k) across the gap.
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