Dans 9g Micro Servo Robot Arm by tetsuharu 3d model
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Dans 9g Micro Servo Robot Arm by tetsuharu

Dans 9g Micro Servo Robot Arm by tetsuharu

by Thingiverse
Last crawled date: 3 years, 1 month ago
Dan's Robot Arm
Github: https://github.com/tetsuharu/dans_robot_arm
A simple desktop robot arm using typical 9g microservos.
Height: 280mm
Base width: 120mm
Reach: 160mm
BOM
Bill of materials for building the robot arm.
230g of filament
6x 9g microservos
5x servo cable extenders
arduino with 7 servo pins (I used a mega)
raspberry pi (or similar)
usb power supply
3mm ball bearings
Build Instructions
Print out all parts (base, base-joint, arm-joint, arm-joint-2, arm-joint-3)
Clear out servo-cable holes with some kind of metal pick
Screw servos into servo spots
Screw servo horns into servo-horn spots
Plug servos into arduino, set their positions to be half-range
Press base-joint servo horn into base servo gear, use long screwdriver to attach
Press other joint servo horns into their servo gears, screw in
Attach servo cable extenders to servos far from the base
Hot glue servo cables to one side of the robot arm, giving slack around joints
Connect servos to arduino
Developing
SolveSpace was chosen as the CAD tool for this project. The STL files are included for convenience.
You can download solvespace at http://solvespace.com/download.pl , the latest windows version can be found at https://ci.appveyor.com/project/whitequark/solvespace/build/artifacts .
long_servo_horn.slvs and 9gmicroservo.slvs are shared libraries, used as "hole" pieces in the other SLVS files.
The arm-joint pieces are similar, but they don't share a base object. Any of these pieces can be redseigned at any time as long as you follow these constraints:
arm-joint-1: 59mm in, 40mm out, 8mm hole for axle
arm-joint-2: 39mm in, 30mm out, 8mm hole for axle
arm-joint-3: 29mm in, perpendicular axis out, 8mm hole for axle
I've run into rendering problems when extending the lengths of the arms, but ideally those would be parametric.
Usage
TBD
Hi There
I made this. I'm Dan. That's why it's called Dan's Robot Arm. I hope you understand this now.
Please build this. It's easy. Peace and love!

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