Category: Diagnostics

  • Pi with FAN-SHIM problem diagnosis

    I purchased a FAN-SHIM and Raspberry Pi 4 from Pimoroni last year but occasionally saw a problem, and struggled with a diagnosis. The FAN-SHIM generally worked great, but I noticed that it didn’t seem to always work when I didn’t have a lead coming off the header to a breadboard. The fan would just run,…

  • Testing MathJax

    Writing maths works as in LaTeX. Use dollar signs to enclose inline math, e.g. \(x^2\) \(x^2\) $$x^2$$ \(\begin{align}E &= mc^2 \\m &= \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}\end{align}\) \(\int_{-\infty}^\infty e^{-\pi x^2}\,\mathrm{d}x=1\label{a}\tag{1}\) \ref{a}

  • This is a reasonably complete sample of using MathJax.

    Sample has been taken form here: https://groups.drupal.org/node/1263 MathJax documentation is here: http://docs.mathjax.org/en/latest/ Wonder how much of this works: https://yutsumura.com/mathjax-in-wordpress/ Writing maths works as in LaTeX. Use dollar signs to enclose inline math, e.g. \(x^2\). Examples for paragraph math are \(x^2 \) and \(x^2\) (both variants are equivalent). There is also a display-style inline math environment,…

  • Getting annoying error with phpMyAdmin

    I upgraded phpMyAdmin from 4.1.2 from 4.2.6. Having done this, I copied in the config.inc.php file and started everything up. Logged in and I get “You should upgrade to MySQL 5.5.0 or later.”. Well yes, I should. But I can’t (the mysql version is attached to the NAS – so i can’t really change that…

  • Updating Language of postings in Drupal.

    Everything said it was undefined language (very weird). Found  this  post so I ran this update: UPDATE node SET language = ‘en’ WHERE language = ‘und’; And it did exactly what it says on the tin (turned everything set to und to en). Perfect!