Makerbot EMI Issues

1. 

   Z LeHericy says:

   March 6, 2015 at 5:22 PM

   @phookyagain I tried doing the experiment again, with the heaters off, and
   the problem still happened, However, I found that the problem would
   completely dissapear if my other hand was in contact with a ground on the
   MakerBot (such as the SD card cover)

   Reply
2. 

   Adam Mayer says:

   March 6, 2015 at 4:39 PM

   @ZInventions Well, so much for that hypothesis. Are you sure the ground
   you’re plugging into is good? (Are your touchscreen and bot on the same
   ground?)

   Reply
3. 

   mike mackenzie-grieve says:

   March 6, 2015 at 3:46 PM

   i was wondering about this issue my self, i do hope to build a nice metal
   case for all my electronics when i am all done, but i do wonder where it is
   mostly emitted from, i would think the stepper controlers my self that is
   where most of your high power fast switching is going on.

   Reply
4. 

   Z LeHericy says:

   March 6, 2015 at 3:43 PM

   @canuckscottsmen Oddly, the steppers were off when I shot the video, and I
   thought they would be the biggest contributors, However, the EMI
   interference isn’t quite as bad if the heaters are off, so that’s
   definitely part of it, as well as the PSU itself, which I think is the main
   contributor to the EMI. This raises a question, Why doesn’t that affect
   tower computers? is it just the Capacitative screen that is sensitive
   enough?

   Reply
5. 

   mike mackenzie-grieve says:

   March 6, 2015 at 2:44 PM

   @ZInventions my next guess would be the atmel processor itself, your idea
   with the metal cage is a good one from what i know its not a bunch you may
   need a finer mesh than what i saw in your video that would be a good way to
   make a faraday cage, but you need to have it grounded. i would also check
   your grounding too on your power outlet

   Reply
6. 

   mike mackenzie-grieve says:

   March 6, 2015 at 2:03 PM

   @ZInventions most desktops are in a metal cage, so it would work something
   like a faraday cage not a perfect one but it would cut down on almost all
   noise. i know of a few computers that will make radios get allot of static
   in them when they are close to a computer.

   Reply
7. 

   Adam Mayer says:

   March 6, 2015 at 1:45 PM

   Thanks for documenting this. The heaters can pump a few amps @ 12V through
   completely unshielded wire. I’d love if you could turn off the heated build
   platform and see if you still get the interference. I’m more suspicious of
   the current HBP design than any other part of the system.

   Reply

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