https://www.airwebreathe.org.uk/ 2026-04-30T05:54:58+00:00 https://www.airwebreathe.org.uk/ https://www.airwebreathe.org.uk/lib/tpl/a_free_worldic/images/favicon.ico text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=anet_a8&rev=1512577129&do=diff Anet A8 text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=automated_code_tidying&rev=1512577129&do=diff Automated Code Tidying tidy-source.sh This simple script searches a directory for source files, and performs the following actions: * Replaces tabs with spaces * Ensures the file ends with a newline * Replaces CRLF with LF * Removes any trailing whitespace on each line of code text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=chaosimager&rev=1512577129&do=diff I once read a book called 'Symmetry in Chaos’ by Mike Field and Martin Golubitsky. The book was filled with these beautiful figures produced by progressively iterating complex number points through functions. The functions would cause the points to attract to certain parts of the picture like sprinkling iron filings on a magnetised plate. Pixels would be coloured according to the density of their ‘dusting’. After reading about this I really had to give it a try, and within about a week I was pro… text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=colourize&rev=1512577129&do=diff colourize This script is an example that shows how to colour the warnings and errors in compiler output in bash. This makes it easier to pick out error messages in the output stream. Adjust the regular expressions to match your use case: #!/bin/bash set -e ccred=$(tput setaf 1) ccyellow=$(tput setaf 3) ccgreen=$(tput setaf 2) cccyan=$(tput setaf 6) ccend=$(tput sgr0) sed \ -e "s/\(.*[wW]arning:\)\(.*\)/$ccyellow\1$ccend\2/" \ -e "s/\(.*[eE]rror:\)\(.*\)/$ccred\1$ccend\2/" \ -e "s/mak… text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=dlp40&rev=1512577129&do=diff DormanLong DLP-40 I spent the summer 2004 working with Control Developments. I was with them for three months, and worked exclusively for a single customer: Dorman Long. Dorman Long are a civil engineering contractor based in Birmingham who specialise in lifting of large and heavy structural sections across the globe. The company was responsible for such projects as the lifting of the new Wembley stadium roof and main arch, as well as the steel roof of Heathrow Terminal 5 weighing some 18,500… text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=dmx_colourstyle_512&rev=1512577129&do=diff DMX ColourStyle 512 Mode Lighting are a leading manufacturer of electronics for architectural lighting. Products include lighting control systems for incandescent, cold cathode and LED lighting systems. While working with the company, I architected and implemented the firmware for the DMX text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=extdef.h&rev=1512577129&do=diff extdef.h /** * extdef.h - A header of macros to augment the C standard headers. * * v1.0 - 10/06/2012 - Initial release * * Copyright (C) 2012 - Joel Holdsworth * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form… text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=fpga_fan_controller&rev=1512577129&do=diff FPGA Fan Controller My Ceiling fan is controlled by a Hunter Fan Co 27185 remote control, which transmits control messages over RF at 350MHz. Internally the device uses a HT12E encoder chip driving a 350MHz LC oscillator. It has a 4-bit DIP switch that controls the id of the fan that will be controlled. text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=git_tricks&rev=1512577129&do=diff Handy Git Tricks git graph This alias pretty prints a cute graph of commits - similar to gitk, but on the terminal. Simply add this alias to ~/.gitconfig: [alias] graph = log --graph --all --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(bold white)— %an%C(reset)%C(bold yellow)%d%C(reset)' --abbrev-commit --date=relative text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=introduction_to_sigrok&rev=1512577129&do=diff Introduction to sigrok sigrok is a powerful suite of open source, cross platform software designed to interface to various types of device such as logic analyzers, oscillioscopes, multimeters and various other data capture devices. It has been produced by Bert Vermuelen, Uwe Hermann, myself Joel Holdsworth, Martin Ling, and a large community of contributors. text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=make-c-array&rev=1512577129&do=diff make-c-array This script prints binary data as an C array. This is useful for inserting binary blobs into source code. The script takes binary data in via stdin, and prints it out via stdout, so that it can work in a pipe. #!/bin/bash FILE=$1 NAME=$2 echo "const unsigned char $NAME[] = {" od -v -w8 -tx1 $FILE | cut -c8- | \ sed \ -e"s/ / 0x/g" \ -e"s/ 0x/, 0x/g" \ -e"s/^, \(.*\)/ \1/" \ -e"$ d" | sed -e"$ !s/.*/&,/" echo "};" text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=nouveau&rev=1512577129&do=diff Nouveau These are my personal notes on implementing a Nouveau driver features for my nVidia 9600GT graphics card. Gallery Patches * [PATCH 1/4] drm/nouveau: Removed unneeded include in nvc0_fence.c * [PATCH 2/4] drm/nouveau: Replaced magic numbers with defines from nouveau_reg * [PATCH 3/4] drm/nouveau: Replaced copy-pasted nv_wait with nv50_wait_dpms_ctrl helper * [PATCH 4/4] drm/nouveau: Refactored encoder create functions into common nv50_encoder_create helper text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=pulseview&rev=1512577129&do=diff PulseView See the main project page at sigrok.org. PulseView (formally codenamed sigrok-qt2) is a new GUI for sigrok, that I've been working on for a while now. I want to provide something decisively better than sigrok's current two GUIs sigrok-gtk, and sigrok-qt, both of which are unmaintained, and which in my opinion are better abandoned. My goal is to take the simplest approach to getting a functional text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=raspberry_pi_server&rev=1512577129&do=diff Services Web * This website is served up by the standard LAMP Stack with an nginx front end: Linux, Apache, MySql, PHP5. * The website is built with DokuWiki with the a_free_worldic theme. * SSL certificate was provided by StartCom. ownCloud * ownCloud offers a replacement for the kinds of cloud services that google provides, but with the data stored on the owners own machine rather than on a remote server where it can be snooped on by governments or mined by advertisers. text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=sidebar&rev=1512577129&do=diff Home text/html 2018-02-04T18:15:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=start&rev=1517786102&do=diff Joel's Projects Open Source Projects GitHub, ohloh * sigrok - Logic Analyser Software * Introduction to sigrok * PulseView - A new GUI for sigrok. * My personal Project Blog. * fx2lafw - Open Source Firmware for FX2 based logic analysers * I²S decoder * Sigrok on Slashdot * usbdump - Simple usbmon frontend * Wine - Run windows applications on UNIX text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=sunshine_wallpaper&rev=1512577129&do=diff Sunshine Wallpaper Watching Danny Boyle's movie Sunshine prompted me to attempt my own implementation of the solar observation room seen in the movie. My implementation uses live imagery from the NASA Solar Dynamics Observatory. version 1 * sunshine-uv.sh * sunshine-visible.sh Version 1 of my solar observatory is a bash script which uses wget and ImageMagick to download and combine together images of the sun at various wavelengths to produce a wallpaper image. If the script is triggere… text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=triangulate&rev=1512577129&do=diff Triangulate Triangulate was a screensaver that I built for Windows 98. It still runs on Wine! text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=wine_icons&rev=1512577129&do=diff Wine Icon Refresh These icons have been shipped as standard in Wine since v1.2. comctl32.dll File Name Original Tango Source Comments idb_hist_large.bmp Tango Base, Epiphany & Joel Holdsworth text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=wine_icons_todo_list&rev=1512577129&do=diff Wine Icons TODO List * Submit the joystic control panel icon * hh.exe icon * explorer.exe icon text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=wintel_cx-w8_experiments&rev=1512577129&do=diff Wintel CX-W8 Experiments The Wintel CX-W8 is a low-cost Intel BayTrail Atom based mini-PC available from AliExpress for ~$70. Teardown Top * Intel Atom Z8300 * 4x Samsung K4B4G1646Q - 512Mbyte SDRAM * FORESEE NCEMBS99-32G - eMMC flash * X-Powers AXP288 - PMIC * Winbond 25Q64FWTIQ - SPI Flash * Terminus FE1.1s * Realtek 81528 - Ethernet Controller text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=wooden_grandfather_clock&rev=1512577129&do=diff Wooden Grandfather Clock In 2000 I used my school's engraving machine to cut out the parts to make this wooden grandfather clock. The design is quite beautiful, though cutting it out pretty much destroyed the bearings of the router. I never managed to get the escapement mechanism working. text/html 2017-12-06T11:18:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.airwebreathe.org.uk/doku.php?id=wwvb_experiments&rev=1512577129&do=diff WWVB Experiments