previously determined during step 1. You can query the correct value using sed.
8. Move the right servo motor to the horizontal position (towards 1000 μs), e.g. svmr
1080. Send this command with various values until you've determined the most
accurate position.
9. Store the setting: svsrh.
10. Move pen up: svmp 2000.
11. Set pen position: ps 0 40.
12. Place the partially finished sand box on the supports and make sure it lies perfectly flat
on all 4 supports. In case the sand box wiggles on the supports, twist it slightly
diagonally until it lies perfectly flat.
13. Move the pen servo motor to the down position (towards 1500 μs), e.g. svmp 1525.
Send this command with various values until you've determined the most accurate
position. The clock moves to pen to the down position when it wants to write something
in the sand. The pantograph arms should be perfectly horizontal and the tip of the pen
should hover approximately 1 – 2 mm above the surface of the sand box. If necessary,
mechanically adjust the pen by screwing it up or down. Use the M4 nut to lock it in
place.
14. Store the setting: svspd.
15. Check the pen down position in relation to the sand box:
* Pen position 1: ps 0 30.
* Pen position 2: ps 0 55.
Adjust the pen servo motor if needed.
16. Set the pen in a neutral position: ps 0 40.
17. Move the pen servo motor to the middle position (towards 1800 μs), e.g. svmp 1700.
Send this command with various values until you've determined the most accurate
position. The clock moves the pen to the middle position when it needs to move the
pen above the sand between continuous strokes.
18. Store the setting: svspm.
19. Move the pen servo motor to the top position (towards 2100 μs), e.g. svmp 2150.
Send this command with various values until you've determined the most accurate
position. Your goal is to move the pen to highest position possible (servo horn in line
with the acrylic lever). The clock moves the pen to the top position when it's not writing
the time.
20. Store the setting: svspu.
21. Set the vibration period (seconds), e.g. vms 5.
22. Review the settings with sed. Modify settings if needed. Note that start-up program
mode should be set to command. Don't change the mode at this point.
23. Store settings in PROM: se .
24. Set date and time in realtime clock, e.g. c 2016 08 27 18 40 00. Note that a
CR2032 battery must be installed.
