Note: this isn't working yet. Need to figure out how to host an SVG that is not cached. In the meantime you can use this:
https://jywarren.github.io/certification-mark-generator/
This graphic can be used to show what 3 licenses you are using with your open source hardware, as recommended by OSHWA:
Generate SVGs here: https://jywarren.github.io/certification-mark-generator/facts
Certification site: http://certification.oshwa.org/
Some common combinations will be pre-generated and hosted here for use:
This ought to display the certification mark SVG: