This project details the design and construction of a small, wheeled-leg robot. The robot utilizes a combination of legs and wheels for locomotion, offering potential advantages in terms of adaptability and maneuverability. The design includes 3D-printed components for the legs and body, readily available micro servos for actuation, and an Arduino Nano for control. The GitHub repository provides STL files for 3D printing, code for controlling the robot's movements, and some assembly instructions, making it a relatively accessible project for robotics enthusiasts. The current design implements basic gaits but future development aims to improve stability and explore more complex movements.
DARPA is seeking innovative research proposals for the development of large, adaptable bio-mechanical structures for use in space. The goal is to leverage biological systems like plant growth or fungal mycelia to create structures in orbit, reducing the reliance on traditional manufacturing and launch limitations. This research will focus on demonstrating the feasibility of bio-based structural materials that can self-assemble, self-repair, and adapt to changing mission needs in the harsh space environment. The program envisions structures potentially spanning kilometers in size, drastically changing the possibilities for space-based habitats, solar sails, and other large systems.
Hacker News users discuss the feasibility and practicality of DARPA's bio-engineered space structure concept. Several express skepticism about the project's timeline and the biological challenges involved, questioning the maturity of the underlying science and the ability to scale such a project within the proposed budget and timeframe. Some highlight the potential benefits of using biological systems for space construction, such as self-repair and adaptability, while others suggest focusing on more established materials science approaches. The discussion also touches upon the ethical implications of introducing engineered life forms into space and the potential for unintended consequences. A few commenters note the ambitious nature of the project and the possibility that it serves primarily as a stimulus for research and development in related fields.
"Anatomy of Oscillation" explores the ubiquitous nature of oscillations in various systems, from physics and engineering to biology and economics. The post argues that these seemingly disparate phenomena share a common underlying structure: a feedback loop where a system's output influences its own input, leading to cyclical behavior. It uses the example of a simple harmonic oscillator (a mass on a spring) to illustrate the core principles of oscillation, including the concepts of equilibrium, displacement, restoring force, and inertia. The author suggests that understanding these basic principles can help us better understand and predict oscillations in more complex systems, ultimately offering a framework for recognizing recurring patterns in seemingly chaotic processes.
Hacker News users discussed the idea of "oscillation" presented in the linked Substack article, primarily focusing on its application in various fields. Some commenters questioned the novelty of the concept, arguing that it simply describes well-known feedback loops. Others found the framing helpful, highlighting its relevance to software development processes, personal productivity, and even biological systems. A few users expressed skepticism about the practical value of the framework, while others offered specific examples of oscillation in their own work, such as product development cycles and the balance between exploration and exploitation in learning. The discussion also touched upon the optimal frequency of oscillations and the importance of recognizing and managing them for improved outcomes.
Summary of Comments ( 2 )
https://news.ycombinator.com/item?id=43719872
Hacker News users discussed the practicality and potential applications of the micro robot, questioning its stability and speed compared to purely wheeled designs. Some commenters praised the clever integration of wheels and legs, highlighting its potential for navigating complex terrains that would challenge traditional robots. Others expressed skepticism about its real-world usefulness, suggesting the added complexity might not outweigh the benefits. The discussion also touched on the impressive nature of the project considering its relatively low cost and the builder's resourcefulness. Several commenters pointed out the clear educational value of such projects, even if the robot itself doesn't represent a groundbreaking advancement in robotics.
The Hacker News post titled "Micro Wheeled legged Robot" linking to a GitHub repository showcasing a small robot design has generated a moderate amount of discussion, with several commenters focusing on specific aspects of the project.
One commenter expressed interest in the robot's unusual leg design, questioning the advantages it offers over more traditional designs. They specifically wondered if the chosen design results in a smoother transition between rolling and walking, or if it primarily serves to simplify the mechanical complexity of the robot. This commenter also pointed out the potential for increased friction and wear due to the leg design.
Another commenter praised the overall cuteness and apparent simplicity of the robot, while also acknowledging the inherent complexities of building such a device. They further suggested the possibility of future enhancements, like incorporating more advanced control mechanisms or experimenting with different gaits.
One user focused on the practicality of the robot, suggesting potential applications such as inspection or exploration in confined spaces. They also expressed curiosity about the robot's battery life and its ability to navigate more complex terrains.
A different commenter expressed a desire for more technical details, specifically requesting information about the microcontroller used and the power consumption of the robot. This commenter also asked about the communication protocol employed.
Another individual praised the project's open-source nature and expressed gratitude for the creator's willingness to share their work with the community.
The discussion also touched upon the choice of using Fusion 360 for the design, with one commenter mentioning its accessibility and ease of use for hobbyists.
Finally, one commenter questioned the intended purpose or application of the robot, suggesting that while it's a neat demonstration of engineering, its practical use cases might be limited. They framed this observation not as a criticism, but as a genuine inquiry about the project's goals.