Tuesday, October 20, 2015

3D-printed Robotic Arm Gripper

Some initial pictures from a robotic arm gripper I designed using Onshape and 3D-printed on Makergear M2. I am using inexpensive micro hobby servos. I am able to activate the gripper using a servo tester but need to adjust the dimensions for smoother motion. As I build rest of the arm, I also plan to change the shape of the tip to provide more clearance.

Sunday, October 18, 2015

World Maker Faire 2015 at the New York Hall of Science

September 26-27 was the 6th Annual World Maker Faire at the New York Hall of Science (NYSCI). There were individual sections for robotics, drones - with a "drone cage" for demos, makerspaces, 3D printing, STEM education, startups, dark room for light-related projects, arts and crafts and many more interesting projects spread around the NYSCI, indoors and outoors. You can see the full list of projects at the 2015 Meet the Makers page (scroll down to search by a keyword).

Here are some pictures I took:

"The Lumiphonic Creature Choir" was a very interesting installation. The dynamic twelve head displays are generated by a projector, and a keyboard controls whether they talk or stay silent.

The "Dark Room" hosted light-related projects.

There were multiple automated musical instruments.

Separate section for drones had a large space enclosed with nets.

There were various robotics and remote-controlled vehicle projects.

The "Mid-Atlantic Retro Computing Hobbyists" had a great exhibit with older computer equipment. Here's my favorite, a Commodore 64 with a 5.25" floppy drive and you can even see an Amiga on the corner of the picture.

There were many 3D printed projects.

Speaking of printing, here's a pancake printer!

The "R2 Builders Club -East Coast", had not just one but a group of R2-D2's.

There were a number of building tools such as for PCB manufacturing and CNC milling, in addition to multi-purpose tools with changeable heads.

Here's a 3D scanner that uses your cell phone for scanning,

and a DIY satellite ground station system.

There were also some kinetic sculptures.

Finally a few pictures of the NYSCI,

and the Unisphere at the Flushing Meadows Park, where the visitors boarded buses to go back to the parking lots.

Friday, July 3, 2015

Assembling the MakerGear M2 3D Printer from Kit

Recently I purchased a MakerGear M2 3D printer and assembled it from kit. Here are pictures from various stages of my assembly as well as some post-assembly pictures. These may be useful to people researching 3D printers for purchase, or assembling their own MakerGear M2 printer.

All components of the kit arrived in a single box. Many components of the frame were already assembled. I particularly liked that most of the components were individually labeled. Hardware (screws, nuts, etc.) came in individually labeled bags, further packaged by their size (M6, M5, M4, etc.).

Shipped components:

Here are pictures of the various sub-assemblies I assembled from individual components. The pictures below represent the completed sub-assemblies.

Spider sub-assembly, which holds the build plate and heater.

Extruder mounting plate sub-assembly.


Fan sub-assembly.


X and Y motors with pulleys attached. Although I attached the pulleys at this point, I readjusted their heights during installation to the frame.

Idler bolt sub-assembly. I assembled two of these. Each belt (X and Y) passes through a motor pulley and an idler bolt.

Controller board and electronics enclosure. The main instructions pdf referred to a previous version of the electronics enclosure (laser-cut plastic version). There is a separate pdf for the metal enclosure assembly.


The following is the frame as it was shipped.

After installing the completed spider sub-assembly and motor.


After installing the extruder motor, extruder and fan sub-assembly.

Controller board installed to the frame.

Next steps include installing the wiring harnesses and the top of the enclosure box. I do not have pictures for steps of installing the wiring harnesses. However, here are some post-assembly pictures.

Completed 3D printer. The kit came with black PLA filament. The picture is taken with the blue third-party PLA filament I used.

Filament feeding tube.

Positioning of the Z-stop switch.

Z-stop screw for adjusting the Z-zero-height. Note that this screw is rather long. When you need to adjust the height you can turn the screw manually from bottom of the plate without lowering the plate.

X motor.

Cabling behind the electronics enclosure.


Official MakerGear M2 assembly instructions are available here.