To prepare file:

 * Make stl file.
     openscad -o test-object.tmp.stl test-object.scad
   or equivalent.

 * Slice the file.  On appropriate OS run Slic3r.
   I was using 0.9.7.
   Download from here:
      http://slic3r.org/download

   Then

     /home/reprap/Slic3r/bin/slic3r --load /home/reprap/play/slic3r-config.ini test-object.stl

   Produces test-object.gcoce.

To print:

 * Turn on printer and connect computer.
 * Start pronterface
     cd /home/reprap/reprappro-software.git/
     ./pronterface/pronterface.py 
 * Select "connect" (make sure it's ttyUSB0 115200),
   wait for printer to connect
 * Tick "watch"
 * Turn on the hotend and bed heaters
 * Remove MicroSD card from printer and copy the file to it
   (give it an 8.3 filename ending in .G)
 * Insert MicroSD card back into printer
 * Wait for bed (and hotend) to get up to temperature
 * If there's lots of ooze, pick off nozzle with fine-nosed pliers
 * "SD" / "Print", select the file you uploaded earlier
 * Watch while it starts and make sure that the skirt sticks to
   printbed and nothing gets tangled
 * Check that filament feed path from feedstock coil looks good.

After printing:

 * You can right away unclip the bed plate.
 * Wait for the object and bed plate to cool before removing it.

*** DO NOT TURN PRINTER OFF WHILE HOT END IS HOT ***

Levelling (occasionally, or after transport):

 * Home in pronterface
 * Set level:
     Use FL/FR to move to front left / right
     Use Home Z to make it go up and down
     Observe motion of bed - should be just none
     Turn RH thread with fingers to adjust so above is true
 (Levelling screws front/back are at RH of bed plate.)

Bed cleaning: use isopropanol

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make these symlinks
~/.pronsolerc -> /home/reprap/play/pronsolerc (adjust to taste)

Slic3r - is from slic3r-linux-x86-0-9-7.tar.gz
 /home/reprap/Slic3r/bin/slic3r --load /home/reprap/play/slic3r-config.ini --ignore-nonexistent-config

repsnapper - only used this so far for its gcode viewer

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firmware upgrade:

 firmware is in marlin.git#iwj and works with make
   various other firmwares for comparison only
    sprinter-reprappro.git sprinter.git
 produces Marlin.hex
 depends on stuff in arduino-0022 (doesn't work with other arduino
   versions, incompatible)
 program with
   avrdude -b 38400 -v -P /dev/ttyUSB0 -p atmega644P -c arduino -U flash:w:Marlin.hex
 needs the reset jumper (which is right next to the mcu) fitted