BrachioGraph
Hardware
pen plotter
SHOW HN2019
63points
12comments
#713of 2,195 in 2019
Top 33%of 2019 by points
How HN took it
CuriousMostly questions and neutral comments
2 positive, 5 neutral or asking, 0 mixed, 1 critical, out of 8 comments about the project. Thread score +0.05.
Idea: 2 for, 0 againstPerformance: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Cheap, simple and fun build, good for children
From 2 comments
Full details of the project, including all the code and documentation, are posted at https://www.brachiograph.art. This is my attempt to do something with the Raspberry Pis and…
DanieleProcida on HNFantastic. Thanks. This will be my next project.
jmpman on HN
Interesting idea using imprecise hardware
From 2 comments
Could be really interesting to add cheap cameras and OpenCV to this concept!
mmastrac on HNI'm a big fan of ink, since it gives better contrast. Can the python software be adapted to not drag across freshly drawn lines? Are there pens that work better in that context?…
powerbroker on HN
Objections
Servo precision too low for fine work like PCBs
From 2 comments
Cool project! Feature-creep: I can't help wondering if there would be ways to improve the precision enough to make for instance PCB's without increasing the complexity/cost to…
jascii on HNNot with these servos or this mechanical arrangement, that's for sure. But, it's very interesting to think of ways to improve the precision of imprecise hardware, using only…
DanieleProcida on HN
Requests
Software to avoid dragging across freshly drawn ink lines
From 1 comment
I'm a big fan of ink, since it gives better contrast. Can the python software be adapted to not drag across freshly drawn lines? Are there pens that work better in that context?…
powerbroker on HN
Add cameras and OpenCV for precision correction
From 1 comment
Could be really interesting to add cheap cameras and OpenCV to this concept!
mmastrac on HN
Questions
What algorithms vectorize bitmap lines with few vectors
From 1 comment
What are the "standard" algorithms for vectorizing bitmap lines? I'd had a little art project where I wanted to draw lines on the wall and then have them captured by a camera and…
geokon on HN