<p>my old lab notes are something else <a href="https://lab.whitequark.org/notes/2014-11-30/three-point-oscillator/" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="ellipsis">lab.whitequark.org/notes/2014-</span><span class="invisible">11-30/three-point-oscillator/</span></a></p>