Connect an IP camera via wired ethernet to an ethernet USB adapter to a Raspberry Pi
Connect the camera to the ethernet USB adapter via a CROSSOVER cable (or via an ethernet switch).
Install DHCP server:
sudo apt install isc-dhcp-server
|# I do not want my screensaver to auto-activate after a timeout.|
|# For some reason, you *have* to select a nonzero, finite timeout value for xscreensaver (there's no "infinity").|
|# I only want my screensaver to active when I lock my system by pressing [Meta]+[L].|
|# This hotkey is set up to launch this script, which|
|# - starts the xscreensaver daemon,|
|# - activates the screensaver (with lockscreen enabled),|
|# - waits for it to terminate (unlocking logs an "UNBLANK" event),|
|# - then kills the xscreensaver daemon.|
|// Beveled wedge shape for OpenSCAD|
|// Written by C.A.P. Linssen <firstname.lastname@example.org>, Sept 2018|
|// This software is distributed under the "CC0 1.0 Universal (CC0 1.0)" license.|
|// You should have received a copy of the CC0 Public Domain Dedication along with this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.|
|// module bwedge|
Uses backward Euler integration (
maxord=1 option), which can be very slow.
Set maximum iteration counts: DC iteration count limit (
itl1, default: 100), DC transfer curve iteration count limit (
itl2, default: 50), and transient analysis time point iteration count limit (
itl4, default: 10) [ltwiki]_.
I initially had some problems installing on my laptop, so decided to boot Ubuntu 12.04.5 LTS, 3.13.0-32-generic from USB and work from there.
For an automated installation script, see gpib_install.sh (and gpib.conf) below. The rest of this document describes the actions of the installation script step-by-step.
First, get the packages that are necessary to support Python bindings:
|* Compute the (Moore-Penrose) pseudo-inverse of a libgsl matrix in plain C.|
|* Compile uding:|
|* gcc moore_penrose_pseudoinverse.c -lgsl -lblas|
|* - libgsl (GNU Scientific Library)|
|* - libblas (Basic Linear Algebra Subprograms)|