Micro Robot arm (9g Micro Servo) see video
Description
The robot can be controlled by remote control, Arduino, etc
I see that there are different diameter on the shaft from the servo. If the gear does not fit I'll fix a new one. Just send me the diameters of the shaft.
See it in action:
youtube.com/watch?v=_fGNWsP41S0
youtube.com/watch?v=eWSpKL0VOp8
youtube.com/watch?v=Qj7jYwfpEMc
youtube.com/watch?v=Ca4PmYkpcgg
Programming:
youtube.com/watch?v=7hBvyaEWg5I
Instructions
thingiverse.com/thing:38875
Latest uppdate
- Arm w spring.stl and Sving v2.stl
Are to adding a rubber band and spring for increasing handle wight. Not tested yet.
- Grippper v5 with new "spring" for bether grip on the gear.
- Gear v5 is smaller for stronger gripp and fit gripper v5
- ArmFront_v3 (design for the gripper)
- Gripper (x2)
- GripperGear - mounting on the gripperservo
You will need:
- 5 micro servo 9g and it's accessories
- 4 very small screws (for the 4 armed servo horn)
- 3D printer (made for uPrint but it should work on other)
- Some things to controll det robot - i use an Arduino and a servoshield.
3D print:
Enlarge 10 times before printing. And put the two measurement metric not inches.
1 - Fot
1 - Sving
2 - Arm
1 - ArmFront
2 - Gripper
1 - GripperGear
Instuctions
Servo inserted in custom holes.
Fit the two arms together.
Adjust the servo so that it is in the middle.
Install the servo horn with one arm.
Servo on the fot platform should have the servo horn with 4 arms for stability.
I welcome suggestions for improvements.
Robot program for Arduino:
bentommye.blogspot.no/2012/12/download-arduino-kontrollert-robot-arm.html
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Hi,
thanks for lending a hand :)
Two suggestions:
- a bigger foot: http://www.thingiverse.com/thi...
- make a turnable wrist
Bye,
hyla
Suggestions for a turnable wrist.
Remove the gripper. Mount a 4 cross horn on the gripper servo. Print an extra foot.stl if nessesary. Then mount the foot on the horn.
The old gripperservo is now the writst servo.
Add a new servo to the new foot and use that for the gripper.
Maybe it's an ide to use an extra strong servo for the lifting arm. Because of the extra weight. See: http://www.thingiverse.com/thi...
I like the foot. A turntable is maybe too heavy? But I can trye.
When I load the files into Repetier or Pront3rface, they appear very very tiny… what units did you use? I just got my servos, and I can't wait to start!
I have to scale it 10 times before I print it.
I do not know why but various programs make different sizes of STL files. From some programs do I enlarge 1000 times and from any I must magnify 10 times.
try scaling by 10x. at least in replicatorG it seems like 10x is the correct ratio. the base piece appears to fit with the 9g servo with 10x scaling. for a 7g servo its around 9.4x
I had the same problem. I imported the files in Google Sketchup with Jim Foltz stl importer (which makes stl files super huge by the way) and scaled them down to fit the servos (a factor of 0.4 in my case) and then exported them back to stl. That worked for me with Slic3r.
i've started making this on a MakerBot Replicator for a dynam 7g servo. the 7g servo is slightly smaller than the 9g one, but has very similar dimensions. it seems like scaling it by 10x and then .94 seem to give a pretty good fit. will update as i proceed :)
Awesome project! I really like how your design for using the servo horns to attach to the parts. I just ordered up 5 servos :)
So cheap, http://dx.com/p/mystery-9g-min...
~4 usd when you buy one, ~3 usd when you buy 5!
For Arduino conroller - I recommend that power is connected to the servoshield rather to the Arduino.
License
I re-wrote your design in OpenScad: http://www.thingiverse.com/thi... (and made some changes to make it easier to print).