Technical wednesday, I'm back. One of my (new) hobby to kill a few minutes is to draw celtic knot. I've already been into this ~10 years ago and it feels good to do it again. For those who don't know, a celtic knot is a twisted loop. The fun part: there is some serious theory …
Category: Hacking
Week end activities
Last week-end, I did 2 crafting activities with the kids. First, my daughter had a doll clothes hanger that she broke. That's the cost of a very untidy room. So we decided to work on building a new one. She sat on my laps and did the measuremnt of the broken one, I used inkscape and explained …
Designing gears with inkscape
For a hush hush project, I need to use gears and I plan on designing and laser printing them. Theory I found this old article which explains a lot on how to make gears with (older) inkscape. It relies on the following technical reference. With new version 0.91, things have been a bit simpler. Unit can …
R.I.P Billy
R.I.P Billy, for thou shallt be reborn and never forgotten. I had an old Billy shelf which was starting to collapse and had the wrong color (moved from one room to another...). It was time to swap for a brand new one (yeah, trip to ikea!!!). The old one got repurposed in my cellar to …
Rainbow loom and hacking
A while ago, I ordered from alibaba (or dealextreme) bazilions of elastic bands for the kids. However, I forgot to buy a loom. Being back from vacation, sunday evening needs an occupation for the kids. Time for some hacking! I've already used the elastics between 2 fingers and the kids are now good with it …
Piggy bank for kids
My kids are old enough to have their first coins and they were begging for a piggybank to stash their valuables. I had the idea to build them an actual treasure chest, out of plywood. The final design is available on thingiverse, this post will focus on how to design and build it. Design I used …
Using Persistence of Vision on Ubuntu
I've been using Persistence of Vision for almost 20 years. By using, I mean thaat I had times when I was pretty intensive users and most of the time where I didn't touch it for spans of multiple years. I recently decided to install it on my ubuntu, and there are some caveats that I'll …
“infinite” bash history
I tend to use `screen`a lot and never reboot my computers. As my memory becomes flaky, I often need to search in my history and usually don't remember which tab I used for a specific command. I've solved this problem with my bashrc the following way: # don't put duplicate lines or lines starting with space …
