Delta-type 3D printer built using extruded rails

delta-3d-printer-extruded-rail

From concept to completion this delta-style 3D printer (translated) is a sweet build. The quality of the work comes as no surprise. We’re familiar with [Arkadiusz Spiewak’s] craftsmanship from that H-bot type 3D printer we saw from him back in April.

Planning started off with a render of the design using Blender 3D. Not only did this give him a 3D model to use as his building reference, but the animation framework allowed him to test the kinematics of the design. After ordering an extruded rail system and assembling the frame he found the pillars had too much flex to them due to the rails used on the top and bottom. The fix was to mill a top and bottom plate to stiffen things up. After testing out the motors and the extruder head mount he made one final design change. He exported his Blender design as dxf files to cut and weld an aluminum replacement for the extruder mounting platform. As you can see in this video, the preliminary results are looking good!

Continue reading “Delta-type 3D printer built using extruded rails”

Rusty old table saw turned into a workstation worthy of a master craftsman

rusty-old-table-saw-turned-pro-workstation

Okay, first of all: holy crap! Even if you didn’t know this started as a rusty table saw, the workstation that came out of this project is just phenomenal. It really makes us wish we had looked around for a used model with a cast iron top instead of going for the cheap stamped metal one that was ready to use.

[Simon Leblanc] started with a Delta contractor’s saw that was rusty inside and out. The refurbishment began by removing the table and everything from the inside. The rods and gears were all cleaned up before he began to sand away the rust on the table itself. But obviously he didn’t stop with getting the saw to be functional again. He built a small set of cabinets to serve as the base for the saw. They went inside of this larger assembly that combines an MDF table top with an Accusquare rip fence to greatly increase the working surface of the tool.

Now he needs to start in on an extra fancy CNC jig for the thing.

[via Reddit]

Shakey robot plays Angry Birds

At this year’s Pycon [Jason Huggins] gave a talk about his Angry Birds playing robot. He built a delta robot which includes a pen actuator for controlling a capacitive touch screen. The video after the break starts with a demo of the bot beating a level of Angry Birds on the iPad.

The idea behind the build is that robots like this could be used for app testing. I this case [Jason] has tweaked the servo commands manually to achieve the results. But during the talk he does demonstrate some machine vision to analyze and win a game of tic-tac-toe.

We do enjoy seeing the robot, but we’re not sold on the thought that testing will use robots. Perhaps there is a niche need for this type of thing, but we assume the majority of automated testing can be done in the emulator for the device on which you are developing. What we really want to know is how the capacitive stylus works. We didn’t catch him talking about it at all. We want a reliable, yet simple way to electronically trigger touchscreen inputs (along the lines of this project). If you know how [Jason’s] stylus is working please share your thoughts in the comments section.

Continue reading “Shakey robot plays Angry Birds”

ArduDelta would make a great pick and place machine

[Bogdan] sent in a great build of a delta robot he originally posted on the Arduino forum, but he didn’t receive much feedback there. We think a build like this deserves a lot more credit.

After working for 7 months on his robot, [Bogdan] has a pretty stable (and very classy) platform made out of wood. The platform and arms in delta robots are usually extremely light to reduce the inertia of the tool so [Bodan] crafted these out of carbon fiber tubes and plexiglas. Everything is controlled by an Arduino Mega2560 encased in a plexiglas enclosure with a 20×4 LCD, status LEDs, and an infrared receiver.

Continue reading “ArduDelta would make a great pick and place machine”

Update: Open source pick-and-place

[Tim’s] been busy moving his pick-and-place build toward completion. We looked in on the first version of the vacuum head back in October. Since then he’s ditched the camera enclosure which allows for more light and better mounting. The tip has been replaced by one from a pair of vacuum tweezers, and the whole thing is now mounted on a diy CNC machine. The video after the break shows it picking up that IC and moving it around the table. Looks like the part rotation feature is very accurate.

He mentions that the CNC he’s using is quite slow. We hope he checks out this printable Delta robot; hardware that is often used with pick and place machines.

Continue reading “Update: Open source pick-and-place”

Home built Delta Robot

Theres an interesting thread going on at RoboterNetz.de (translated) about building delta robots. For those who haven’t seen delta robots before, be sure to check the video after the break for some really impressive agility displays. A delta robot usually has 3 arms connected to a single point at the end. This configuration allows the end point to maintain its “level” while the whole unit is moved, usually very quickly. There are a few people building them in this forum. The one pictured above is [Asurofilmchen]’s version, but you should also check out [Radbruch]’s posts of a robot made by [Jamison].

Continue reading “Home built Delta Robot”