Prints (1)

Description

Summary update 2(2016/11/25) added printable spacers and a motor mount plate for 20mm npm motor update 1(2015/2/6) : added assembly sequence sheet . this is a simple clock based on a single geared stepper motor which i found in surplus 10 for a dollar... The motor is basically a 1:30 geared motor working at 12v with a 3mm shaft. The single motor is driven by a attiny2313 and l293dd circuit with the coded written in arduino ide. The single motor moves a gear train which in turn moves the minute ring and hour ring. The attiny pulses the motor every minute to move the minute wheel and the hour wheel. buy at: https://www.tindie.com/products/ekaggrat/holo-clock-2/ https://www.youtube.com/watch?v=1EtiEFQ4Aqg Instructions print all the parts at minimum 0.2mm layer height bolts : m3 x 45mm 4 m3 x 25 mm 2 m3 x 22 mm 1 m3 x 10 grub screw for motor gear m3 nut x 7 for npm motor (optional) m2 x 10 2 m2 nuts 2 for bj25 / bj20 motor m3 x 15 self tapping screws 2 pcb spacers / cut from any brass/copper tubing ( printable option also ) 4.5 outer dia x 3.5 mm inner dia x 12.mm length 2 pieces 4.5 outer dia x 3.5 mm inner dia x 8.5.mm length 4 pieces 4.5 outer dia x 3.5 mm inner dia x 6.5.mm length 2 pieces for the stepper you can use any 20mm or 25mm diameter geared more than 1:10 ratio, bipolar or unipolar.

Design Files

File Size

frame_1_motor_mount_npm.stl
120 KB
frame_3_n.stl
81.3 KB
motor_gear.stl
360 KB
BIG_GEAR_2.stl
537 KB
roller_1.stl
59 KB
hours_needle.stl
93.7 KB
p1.stl
33 KB
roller_2.stl
6.33 KB
big_ring.stl
1.31 MB
s2.stl
363 KB
SPACERS.stl
197 KB
frame_4_n.stl
289 KB
frame_2_n.stl
71 KB
minutes_needle.stl
83.8 KB
base.stl
371 KB
frame_1__n.stl
626 KB
motor_gear_6mm.stl
602 KB
big_gear_3.stl
647 KB
motor_plate_28byj48.stl
138 KB
s1.stl
460 KB
seq.pdf
2.64 MB

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