Option(s) for running/using a "5v Stepper Motor 28BYJ" for;
"Fish Feeder Project" by mschiller.
https://www.thingiverse.com/thing:1942222
or
"Automatic Fish Feeder with micro servo control V2" by pcunha
https://www.thingiverse.com/thing:736693
or
"Automatic Fish Feeder" by coberdas
https://www.thingiverse.com/thing:301532
or
"..."
Print the 5v Stepper "mounts" and "augers" in place of the servo "mounts" and "augers" for listed projects above.
-OPTIONS-
1) Use DUAL steppers to drive V-Mixer & Auger.
2) Use DUAL steppers to drive V-Mixer & Auger driving spur mixer.
3) Use SINGLE stepper to drive Auger driving spur mixer.
Advantage / Disadvantage
-Steppers are more precise/accurate
-Steppers are much quieter when operating than a 9g continuous servo
-Steppers are much stronger than a 9g continuous servo
-Steppers require extra drivers (+space) to project
-Steppers are pretty easy to get your hands on "off the shelf" affordably
whereas 9g continuous servos can be acquired "off the shelf" but your gonna pay for it.
-Local hobby shops and places "like" MicroCenter are good places to start.
-Cost comparison...
9g Continuous Servo = $6.37/unit (as of 3/15/18);
https://www.ebay.com/itm/9g-Servo-360-Degrees-Continuous-Rotation-Variable-Speed-Bi-directional-FSEN/152902956753?hash=item2399b9f6d1:g:M3AAAOSwcv1adS5I
5v Stepper Motor 28BYJ (+driver board) = $5.70/unit (as of 3/15/18);
https://www.ebay.com/itm/DC-5V-Stepper-Motor-ULN2003-Driver-Test-Module-Board-28BYJ-48-for-Arduino/252650061152?epid=2080013576&hash=item3ad31dfd60:g:QrsAAOSwA3dYNkB-
NOTE: You will need to make appropriate changes to their "script(s)".
Available stepper file to "HELP" you in implementation...
Stepper2.ino ==> https://gist.github.com/sensorium/6947401
| 5v_Stepper_Auger.stl | 1.1MB | |
| 5v_Stepper_Auger_Tube_v3_2.stl | 985.3KB | |
| 5v_Stepper_Axle_Mixer_v3_2.stl | 373.7KB | |
| 5v_Stepper_FishFeeder_v3_2.SCAD | 8.4MB | |
| 5v_Stepper_Hopper_v3_2_Shaft_v2.stl | 1.4MB | |
| 5v_Stepper_M-bracket.stl | 910.6KB | |
| 5v_Stepper_Shaft_Lock.stl | 185.2KB | |
| 5v_Stepper_Spur_Gear_v3_2.stl | 496.0KB | |
| 5v_Stepper_V_Mixer.stl | 2.0MB | |
| 5v_Stepper_V_Mixer_Blank_Cover.stl | 966.1KB | |
| 5v_Stepper_V_Mixer_Cover.stl | 1.1MB | |
| 5v_Stepper_V_Mixer_Holder.stl | 309.7KB | |
| 5v_Stepper_V_Mixer_v3_2_cutout.stl | 2.0MB | |
| Hopper_v3.2.stl | 336.6KB | |
| Tube_support_v3.stl | 134.8KB |
