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:
| base.stl | 370.8KB | |
| base1.stp | 559.5KB | |
| big_gear_1.stp | 861.1KB | |
| BIG_GEAR_2.stl | 536.9KB | |
| big_gear_2.stp | 871.9KB | |
| big_gear_3.stl | 647.2KB | |
| big_ring.stl | 1.3MB | |
| botton.stl | 49.2KB | |
| frame_1_motor_mount_npm.stl | 120.5KB | |
| frame_1__n.stl | 626.1KB | |
| frame_2_n.stl | 71.0KB | |
| frame_3_n.stl | 81.3KB | |
| frame_3_n_fixed.STEP | 831.1KB | |
| frame_4_n.stl | 288.7KB | |
| hours_needle.stl | 93.7KB | |
| minutes_needle.stl | 83.8KB | |
| motor_gear.stl | 359.6KB | |
| motor_gear.stp | 371.3KB | |
| motor_gear_6mm.stl | 602.2KB | |
| motor_plate_28byj48.stl | 138.4KB | |
| p1.stl | 33.0KB | |
| roller_1.stl | 59.0KB | |
| roller_2.stl | 6.3KB | |
| s1.stl | 459.8KB | |
| s2.stl | 362.6KB | |
| seq.pdf | 2.6MB | |
| SPACERS.stl | 197.0KB |
