A 5th order motion planner with PH spline blending, written in Ada
Prunt is an advanced open-source motion control system targetted at 3D printers. Prunt includes features not found in other popular open-source systems, including: Corner blending with user defined deviation. Constrained and independently adjustable velocity, acceleration, jerk, snap, and crackle. P
A 5th order motion planner with PH spline blending, written in Ada launched on December 4, 2024 with 118 votes, #362 of 5,365 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
This motion planner is a software tool designed for robotics and automation engineers who need to generate smooth trajectories. Written in Ada, it uses fifth-order Pythagorean-Hodograph splines to blend motion paths, enabling precise control over velocity and acceleration profiles. The tool is particularly suited for applications requiring continuous, smooth movement without discontinuities, making it valuable for CNC machines, robotic arms, and similar systems that demand predictable motion behavior.
written from the facts on this page · September 2026
From the sources
Prunt is an advanced open-source motion control system targetted at 3D printers. Prunt includes features not found in other popular open-source systems, including: Corner blending with user defined deviation. Constrained and independently adjustable velocity, acceleration, jerk, snap, and crackle. Pinout data provided by the board to eliminate the need to edit pin mappings in a configuration file.
Does a similar job
all alternatives →
Paraflow Nov 2025 · paraflow.com · ▲502Paraflow is a canvas-based agent that defines, designs, and delivers. Create PRD, user flow, UI, prototype, and frontend code—all in one Canvas.
- ANA new spline2018 · raphlinus.github.io · ▲341
I’ve been heads-down for the last month or so working on a new spline, and now I’m excited to show it to the world. It is a continuation of the Spiro work I did for my PhD thesis, and solves most of the problems that held that back from wider popularity.
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 29d ago · github.com
Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.
Dev tools · 17h ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 27d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 24d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 21d ago · talanoa.email
Source: Show HN post ↗
