Tech tips
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- Disabling the NFC pins on nRF52.
- Bus Error from Mercurial on Raspberry Pi.
- Raspberry Pi root on SSD.
- Fixing the actor table.
- Mediawiki and Google fonts.
- Raspberry Pi desktop on i386.
- Make your house an instagram-free zone.
- Snapshot reset for Raspberry Pi.
- Configuring VPN in Oxford.
- Managing the interwiki table when using sqlite.
- Installing Minix 2 on VirtualBox.
- Setting up a Raspberry Pi.
- Compiling for both i386 and ARM.
- Proxy ssh.
- iWork '09 owners club.
- Local host names on TalkTalk internet.
- The ρ mark on a slide rule labels [math]\displaystyle{ \pi/1.8 }[/math], and is useful for converting degrees to radians, and also because for small angles [math]\displaystyle{ \sin x^\circ \approx \tan x^\circ \approx \pi x/180 }[/math]. The C mark shows [math]\displaystyle{ \sqrt{4/\pi} }[/math] for calculating the area of a circle of given diameter, and C' shows [math]\displaystyle{ \sqrt{40/\pi} }[/math]. The M mark on the A and B scales shows [math]\displaystyle{ 100/\pi }[/math].