From charley at snf.stanford.edu  Mon Jul 19 16:43:30 2004
From: charley at snf.stanford.edu (Charley)
Date: Mon, 19 Jul 2004 16:43:30 -0700
Subject: Update, 7-19-20047
Message-ID: <40FC5CA2.30001@snf.stanford.edu>


    I have powered up the robot and it has a missing supply. I've found 
the bad part and have a handful of them on order. I'll install same as 
soon as it gets here and see what happens
next.
    chw3



From charley at snf.stanford.edu  Thu Jul 22 16:15:10 2004
From: charley at snf.stanford.edu (Charley)
Date: Thu, 22 Jul 2004 16:15:10 -0700
Subject: Update, 7-22-2004
Message-ID: <41004A7E.9020507@snf.stanford.edu>


    Replaced dead Darlington, now we have voltage. Wanted 12v, got 2v, 
so we aren't
up yet. I'll be working on this, so watch your mail-something should 
change soon....
    chw3



From charley at snf.stanford.edu  Fri Jul 30 09:19:02 2004
From: charley at snf.stanford.edu (Charley)
Date: Fri, 30 Jul 2004 09:19:02 -0700
Subject: Progress, 7-30-2004
Message-ID: <410A74F6.6070506@snf.stanford.edu>


    Finally there is some. I replaced a bad voltage regulator chip and 
the robot will now
initialize. The PC boots and runs the robot, but we're back to the 
contact problem again,
where 90% of the readings are bad. Over voltage, too little current, 
etc. I'll run the system
with the dummy resistors to see if there is an improvement, and if so, 
we will have to test the
new contact head that Uli has.
    chw3



From charley at snf.stanford.edu  Fri Jul 30 11:10:53 2004
From: charley at snf.stanford.edu (Charley)
Date: Fri, 30 Jul 2004 11:10:53 -0700
Subject: Update, 7-30-2004
Message-ID: <410A8F2D.1080502@snf.stanford.edu>



    I've run the system with the dummy resistors and it runs 100%. The 
old head runs about
2% good measurements/total possible, so it looks like the new head is 
the next step.
    chw3