Vernier clock
From Squirrel's Lair
Stationary disk with 60 slots, with a rotating disk with delta 1 lines behind.
On a caliper, the vernier site of the scale has 11 increments for 10 on the main side.
Does it matter which side becomes the hand and which the background? Test...
to do
- better prototyping. maybe extension
- no easy documentation on cloning in scripting
- cut it out
- need a flat, thin material. Darrel suggested an LP - that would not laser, but maybe 1/16" routing would be OK
work flow
- select shape
- set rotational center appropriately
run macro-ish:
- create tiled clones
- make as many rows as blips needed (x)
- shift y -100% per row
- rotate 360/x per row
- take one clone drag it elsewhere
- clone that one as
- x-1 rows
- shift y -100%/row
- roteate 360/(x-1)
- disconnect clones
- the x-copy becomes the top:
- make cuttable: red outline only
- put indicator for hour hand
- group
- the x-1 copy becomes the background
- make black, no outline
- group
- align the two on top of each other (left and top)
manually rotate to test
minute-off-hour phase
back/static:
- 11 divs
- 360/11 = 32.727
disk/dreh:
- 12 divs
- 360/12 = 30
- 360/24 = 15
file
\ projects\vernier clock
options if current design does not work
- need to figure out the hours part... maybe spiral?
- could do the whole thing with only 5 minute increments and use hour speed
givens
- Clock mechanism
- diameter hour 5.75mm or 5mm (it has a step)
- diameter minute 3.55mm
