ventosus's pages

I have always thought that OSHPark do not support plated slots at all.

But this is actually not true anymore, they (OSHPark) just don't officially support it ;-)

You apparently have to mark the plated slots on the outline/edge layer for the fab-house to note as described here:

http://support.oshpark.com/support/solutions/articles/134889-internal-cutouts-and-slots

A more in-detail description on how to do this in KiCAD can be found here:

https://forum.kicad.info/t/oval-pads-not-possible-for-oshpark/835/4

• Draw a line on the outline/edge layer and set its diameter to the slot's width, it's as simple as that
  

If you follow the instructions, OSHPark should give you a preview with plated slots (and hopefully the fab-house will do as isntructed, too).

After a high interest at Maker Faire Rome, we are now running a beta-testing campaign to collect more comprehensive feedback of first-hand experiences of our final Chimaera prototype design from interested individuals. Get in contact with us for a month of free testing (excl. shipping).

http://open-music-kontrollers.ch/chimaera/

http://open-music-kontrollers.ch/contact/

http://circuitcellar.com/wiznet2014/winners/

http://open-music-kontrollers.ch/chimaera/

We will have a booth at Maker Faire Rome 2014: http://makerfairerome.eu

Meet us there and lay your hands on one of the most expressive open electronic misuc instruments:

The Chimaera - a poly-magneto-phonic theremin: http://open-music-kontrollers.ch/chimaera/

Do you need to add some nice-looking rescalable formula to your project at hackaday.io?

Here is a simple way to accomplish it starting from a Latex document with custom dimensions with white formula on white background, compiling it to PDF via pdflatex and converting it to SVG via pdf2svg.

formula.tex:

\documentclass[12pt]{article}

\usepackage{blindtext}
\usepackage[paperheight=20ex,paperwidth=60ex,margin=0ex]{geometry}
\usepackage{color}

\thispagestyle{empty}
\color[rgb]{1,1,1}

\begin{document}

  \begin{eqnarray*}
    B_n &=& \frac{B - B_{min}}{B_{max} - B_{min}} \\
    y_n &=& c_0 \cdot \sqrt[3]{B_n} + c_1 \cdot \sqrt{B_n} + c_2 \cdot B_n
  \end{eqnarray*}

\end{document}

Compile with:

>> pdflatex formula.tex
>> pdf2svg formula.pdf formula.svg

Now upload it to some web space and simply link to it on your hackaday.io project log and you have a nice looking and scalable formula: