Sep 06, 2020 - Version Released

The new version of the RCR3D app includes the following important enhancements:

  • Previous versions of the app were hard-wired to work with webcams producing 640x480 images only, which was until recently the most common type of webcams. The new version supports 1280x720 and 1920x1080 webcams, which have become increasingly common lately.
  • Quite often, our users encounter webcams what take upside-down pictures. Since the previous versions of the app relied on the camera to take upright pictures, the recommended solution was to flip over the entire camera assembly. With the new version it is no longer necessary -- just flip a toggle switch in the Configuration Center, and the app will rotate the photos by 180° automatically.
  • The zone detection algorithm has been significantly reworked to account for zones that appear non-square and distorted on photos taken by high-resolution webcams.
  • The Auto-Config mode, introduced in 2018, has successfully passed the test of time, so the new version has this mode permanently enabled. The obsolete manual-configuration mode is no longer available.

Jul 07, 2019 - A Great Stand-Alone Alternative To Raspberry PI Found

Our Rubik's Cube Solving Robot runs equally well when plugged into a Raspberry PI running Windows IoT or a regular Windows 10 laptop or PC. Many users have opted for Raspberry PI to give the robot the ability to run autonomously, but is it the most convenient or economical option?

For fully stand-alone operation, the Raspberry PI needs an HDMI screen, keyboard and mouse -- not exactly a small entourage. All of that can be replaced by a single touchscreen, but currently there is only one model we are aware of that supports Windows IoT: the 7" display from Adafruit. Unfortunately, this little gadget ain't cheap ($80) and more often that not, out of stock.

In an effort to find an inexpensive and aesthetically pleasing alternative, we looked at low-cost Windows 10 tablets with two USB ports, and voila -- the 10" RCA Cambio, which can be purchased on eBay for around $60 - $70 (often refurbished, but who cares!) fits the bill perfectly. This fairly unpretentious device works great with the robot, replaces both the Raspberry PI and touchscreen, and costs much less than those two combined.

To install the app on your tablet, simply go to the Microsoft Store and search for RubiksCubeRobot.

May 19, 2019 - 3D Printed Parts Available for Sale

There are 55 3D-printed parts in our Rubik's Cube Robot, and printing them all may take 100 hours or more. If you do not have access to a 3D printer, or simply want to save time, electricity and filament, feel free to purchase the entire 3D printed set of parts for US$350.00. This fee includes free international shipping.

To purchase the set, please click here.

May 03, 2019 - Essential Hardware Package Available for Sale

For those who are interested in building our Rubik's Cube Robot but unable to procure the hardware components at a reasonable price, we are now offering the Essential Hardware Package for US$250.00, which includes free international shipping. The package includes:

To purchase the package, please click here.

Feb 28, 2019 - Version of the App Released

The new version of the RubiksCubeRobot application enables you to use voice commands to start and stop the robot. Also, following your numerous requests, the app is now equipped with a random scrambling feature.

For more information about the new features, see Section 10 of the Software page. Upgrading is completely free for the registered users.

Dec 16, 2018 - Version of the App Released

The new version of the RubiksCubeRobot application allows you to use it with any Pololu Maestro controller, not only the 12-channel one.

Also, to evaluate the app, you no longer need an evaluation registration key. This allows you to evaluate the app for as long as you need, without any time constraints. In the evaluation mode, the app is limited in functionality but slightly scrambled cubes can still be solved.

Upgrading is absolutely free for the registered users but your key needs to be re-activated in the KEY window.

Nov 01, 2018 - Dedicated Web Site RCR3D.com Launched

Our Rubik's Cube Solving Robot now has a dedicated web site at www.rcr3d.com. The information, which used to be crammed into a single page at otvinta.com, is now conveniently split into 3 separate pages: Introduction, Hardware and Software. There is also a separate What's New section. The web site is optimized for a wide range of mobile devices

Sep 10, 2018 - Version of the App Released with improved solving algorithm

The new version of the app incorporates the following improvements:

  • A much faster cube solving algorithm. While the previous version needed 45 moves on average, the new version only needs around 30.
  • During a run, all buttons except STOP are disabled. Previous versions allowed the RUN button to be pressed multiple times, which caused exceptions and robot malfunctions.
  • A progress indicator is shown during photographing.In the previous versions, the progress indicator was limited to the solving phase.
  • Several minor bugs have been fixed.

Upgrading is absolutely free for the registered users.

Jun 21, 2018 - Our Robot is Featured on Weather Channel's Rockets are Cool page

This popular Facebook group with 1.5 million followers chose to feature our robot TWICE within one year. The first time was on Nov 8, 2017.

May 10, 2018 - A tiny rubber ring that makes a big difference

Occasionally, a retracting gripper may drag the cube along with it. We have discovered an amazingly effective and very cheap cure for this problem: tiny rubber bands women use for their ponytails. Putting two of these rubber rings around each of the grippers dramatically increases friction between the grippers and cube, and eliminates the dragging problem almost completely.

Feb 23, 2018 - Version 3.0 of the App Released

Version 3 offers an auto configuration mode of operation. In this mode, the app does not need any configuring whatsoever. The new version of the app also performs error correction, which greatly reduces color recognition-related failures. Another important enhancement is that instead of taking static photos, the app now shoots short videos and uses the last frame for analysis. This artificial delay in image capturing allows the camera to adjust to the current lighting conditions and produce more vivid, easier-to-analyze images.

Dec 11, 2017 - New Wide Camera Replaces Old Round Camera

The new wide webcam has much better color reproduction than the old round one, even in poor lighting conditions. Plus it has a wider lens and therefore can be placed closer to the cube, which makes the robot more compact depth-wise. It is also easier to install and adjust.

Aug 27, 2017 - Our Robot is Featured on Thingiverse

We are happy and proud to announce our Rubik's Cube Solving Robot is featured on MakerBot Thingiverse, the largest 3D printing community in the world.

Aug 17, 2017 - The first-ever fully 3D printed Rubik's Cube Solving Robot released

This robot has all the features of a real robot: servos, arms, gears, vision, artificial intelligence, and a task to complete. The robot is fully 3D-printed: other than the servos and electronics, it has no traditionally manufactured parts. It is the perfect machine to introduce robotics to children of all ages.