There are plenty of examples online, especially academic content, involving people trying to detect the presence of and values of game dice. Classic six sided dice (with “pips” or “dots” instead of Arabic numerals) are the most common target because...
Turning a tablature file into a set of physical motions on the robot involves a lot of software work: parsing a GuitarPro file, considering potential fingerings for each note, planning the transitions between those fingerings, and optimizing the solution around...
The general architecture of a robot guitar will obviously share similarities with the way humans interact with the guitar: a set of actuators for plucking and a set of actuators for fretting. However, the complexity of some of those actuators...
While it is tempting to jump right into prototype design, the first step in any project should be translating the project goals into technical requirements. The two main categories of requirements for this project are picking and fretting, but there...
There is a lot of tweaking that needs to be done once a machine is assembled in order to ensure that it is accurate, reliable, and repeatable. All of the wiring, inputs, and outputs need to be checked, control parameters...
After completing the design and posting a summary on the blog I decided to solicit feedback from the folks at the r/hobbycnc subreddit. I created a post and asked for feedback, banking on the sweet renders to draw people in....
The final check before diving into fabrication is to verify that all of the assumptions I made earlier in the design process are still accurate, or at least conservative. If not, I may need to iterate something again (hopefully not...
So far most of the engineering and analysis has been done on the moving subassemblies within the router (gantry beam, gantry carriage, spindle carriage). However, the structure that supports all of the moving subassemblies is just as important to the...
Stiffness is possibly the most important characteristic of a machine tool. It not only impacts toolpath accuracy (because the tool and machine deflect under the cutting load and acceleration) but also the surface finish, cut quality, and motion control stability...
The range of motion of a CNC axis is limited by three progressively more restrictive methods: mechanical hard stops, electrical limit switches, and software limit positions. Each method eats away at the usable range of motion for an axis but...