• 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.

• Attempted to make motor stop before stalling by setting speed to 0 whenever force reaches a certain threshhold.  This doesn’t work very well.  I think its because it is still trying to get to the position as it.
• Changing the way the motion is set up or using a get current position may fix the problems I was having.
• Reduced length of some wires that are hard to shield.  Noticed some improvement.
• Strain gauges are a bit more sensitive with the shielded wires had to turn down the gain.

8:00 – 4:30

• Discussions with John W and Mike C about the new dataset and hours until the end of the FY
• Discussions about integrating with LDAT. Michelle (?) is becoming quite our champion. I demo’s to several people and it looks like we should be able to tie directly into LDAT data
• More autorunning scripts. Could be done! Testing over night.
• 10:45 demo at Anne’s tomorrow.

7:30 – 3:30

• JW is back from vacation
• Mike C is setting up a new ingestor. Hopefully, he’ll be able to run it himself
• Demo today at noon with S14. Will add notes tomorrow
• 4:00 iPhone appointment
• Working on autorunning of scripts

Apparently I can only connect to this log from within the network.  I tried from home a few times and kept getting connection reset.

Thursday:

Steps for preparing strain gauges:

• Warm resin to room temp
• Sand surface that will have SG attached
• Clean with acetone until the Q-tip doesn’t get black anymore
• apply conditioner
• neutralize
• Apply resin and wait for it to dry
• Apply second layer of resin, attach strain gauge and allow to dry
• Test resistance with tester
• Cover with polyurethane
• Protect connections with silicone

Cleaned up code a bit from when I changed it

Friday:

• Second SG stick was ready to use.  Noted a lot of problems with calibration and consistency.
• Phil recommended averaging samples to clean up the signal inconsistency
• Showed it to Clift and he said that the signal wires needed to be shielded because the magnetic field from the motors were causing interference.

Saturday:

• Attached shielded cable to the SGs and Wheatstone bridge.
• This helped a lot with holding the calibration and consistency.
• There are signal wires going from the wheatstone bridge to the amplifiers which are still not shield which may help with lowering the inconsistencies when not in the dead zone as well as it still loses calibration sometimes.
• Averaging the samples is probably still a good idea even if it seems to be working perfectly(which it isn’t now) without it.
• Started reading OpenGL book but haven’t tried any tutorials yet.

7:30 – 4:30

• The strain gauge isn’t broken this morning – let’s see how it works!
• Need to have a ScriptRunnerServlet that actually runs scripts. The current script needs to be moved to PublisherServlet
• Need to add the mechanism for setting up periodic ingestion. Going to use a calendar and time widget to set initial time and then frequency thereafter. Most of the scheduler is working. Spent some time grocking RegExValidator.

8:00 – 4:00

• The sex change went well. I am now known as Phillese :-b
• More scripting/servlet integration. Working!
• Checked out space at Savage Mill
• Built a spare sensor rod (1/2 hr)