Feldman Project Log

  • Shielded or shortened all signal wires
  • Shield needed to be grounded to motor controllers ground.
  • Seems much more predictable now.  The wires leading to strain gauges are still a bit too long and picking up interference but its hard to make them any shorter.  Remaining interference will have to be filtered out.
  • Strain gauges were going haywire all day not sure if its because the wires were loose.  It does seem that the Wheatstone bridge can only be hooked up one way.  For some reason it seems if you change which SG goes to signal negative or positive it unbalances the bridge.  Does not really make sense considering there really is no difference but I ran into this symptom many times.
  • Now that all the hardware problems should be solved or as good as they will get at the moment i can finally get back to software side.