Gordon Lesti – Personal blog

My home climbing wall reset with LED system

info@gordonlesti.com (Gordon Lesti) — Fri, 31 Oct 2025 23:00:00 GMT

I am presenting my home climbing wall reset with Respberry Pi 5 LED system.

Naturefriends trad climbing and environmental education workshop 2025

info@gordonlesti.com (Gordon Lesti) — Sat, 12 Jul 2025 22:00:00 GMT

A short experience report of the Naturefriends trad climbing and environmental education workshop 2025 in bach.

Naturefriends routesetting workshop 2025

info@gordonlesti.com (Gordon Lesti) — Wed, 28 May 2025 22:00:00 GMT

A small summary of the Naturefriends routesetting workshop 2025 in Selb.

Drilling holes for the LED system of my home climbing wall

info@gordonlesti.com (Gordon Lesti) — Sat, 15 Feb 2025 23:00:00 GMT

A small post explaining the necessary preparations to drill holes for the LED system of my home climbing wall

A selfmade dynamometer board

info@gordonlesti.com (Gordon Lesti) — Mon, 10 Feb 2025 23:00:00 GMT

A selfmade dynamometer board for a Tindeq.

Loading Tailwind CSS color palette into Inkscape

info@gordonlesti.com (Gordon Lesti) — Mon, 30 Dec 2024 23:00:00 GMT

Explaining how to load the Tailwind CSS color palette into Inkscape.

Light up WS2811 LEDs with a Raspberry Pi 5 via SPI

info@gordonlesti.com (Gordon Lesti) — Sat, 28 Dec 2024 23:00:00 GMT

A step by step guide to control WS2811 leds with a Raspberry Pi 5 via SPI.

Planning my home climbing wall reset with Inkscape

info@gordonlesti.com (Gordon Lesti) — Tue, 26 Nov 2024 23:00:00 GMT

A brief overview of the planning to reset my home climbing wall with Inkscape.

Meal-Prep macronutrients calculator

info@gordonlesti.com (Gordon Lesti) — Tue, 19 Nov 2024 23:00:00 GMT

A small tool to calculate the macronutrients for a meal preparation.

Design a Heroicons like SVG icon with Inkscape

info@gordonlesti.com (Gordon Lesti) — Thu, 05 Sep 2024 22:00:00 GMT

A short tutorial to design a Heroicons like SVG icon with Inkscape.

Selfmade wooden loading pin

info@gordonlesti.com (Gordon Lesti) — Sat, 17 Aug 2024 22:00:00 GMT

A selfmade wooden loading pin or lifting pin for climbing finger strength training.

OscillatorNode example to play beep sounds in JavaScript

info@gordonlesti.com (Gordon Lesti) — Wed, 14 Aug 2024 22:00:00 GMT

A small example using OscillatorNode to play beep sounds in JavaScript without audio files loading.

Selfmade wrist-roller against tennis elbow

info@gordonlesti.com (Gordon Lesti) — Sat, 01 Jun 2024 22:00:00 GMT

A easy selfmade wrist-roller or dowel construction against climbers tennis elbow.

Recalibrate your beastmaker Motherboard

info@gordonlesti.com (Gordon Lesti) — Sat, 10 Feb 2024 23:00:00 GMT

A small tutorial to recalibrate the loadcell of a beastmaker Motherboard.

Grippy Pull Down Test - beastmaker climbing grip strength test

info@gordonlesti.com (Gordon Lesti) — Sat, 03 Feb 2024 23:00:00 GMT

Presenting Grippy Pull Down Test. A beastmaker climbing grip strength test with the Motherboard.

Measuring the beastmaker 1000 hold depth

info@gordonlesti.com (Gordon Lesti) — Sat, 06 Jan 2024 23:00:00 GMT

Exact measuring the beastmaker 1000 hold size or depth.

Interpret a beastmaker Motherboard freehang export with D3

info@gordonlesti.com (Gordon Lesti) — Sat, 28 Oct 2023 22:00:00 GMT

Interpret a beastmaker Motherboard freehang export CSV file with in a D3 diagram.

A beastmaker backboard and training station

info@gordonlesti.com (Gordon Lesti) — Sat, 25 Feb 2023 23:00:00 GMT

A beastmaker backboard and climbing strength training station mounted above a door frame.

Beasty 5a+ - A beastmaker workout slightly harder than Beasty 5a

info@gordonlesti.com (Gordon Lesti) — Sat, 18 Feb 2023 23:00:00 GMT

Beasty 5a+ is a slightly harder beastmaker workout than Beasty 5a.

My home climbing wall upgrade

info@gordonlesti.com (Gordon Lesti) — Sat, 28 Jan 2023 23:00:00 GMT

A post that summarizes the upgrade of my home climbing wall.

Marking routes on a home climbing wall with magnets

info@gordonlesti.com (Gordon Lesti) — Fri, 20 Jan 2023 23:00:00 GMT

How to use magnets for the routesetting on a home climbing wall.

My Beastmaker Motherboard setup

info@gordonlesti.com (Gordon Lesti) — Sat, 26 Nov 2022 23:00:00 GMT

A small post to show my Beastmaker Motherboard setup for hangboard training.

Text to Voice in JavaScript example

info@gordonlesti.com (Gordon Lesti) — Sat, 12 Jun 2021 22:00:00 GMT

A very small example of text to voice with JavaScript, also known as speech synthesis.

JavaScript device orientation tool

info@gordonlesti.com (Gordon Lesti) — Sat, 12 Jun 2021 22:00:00 GMT

A small device orientation tool with JavaScript.

My adjustable home climbing wall

info@gordonlesti.com (Gordon Lesti) — Sat, 05 Jun 2021 22:00:00 GMT

A post describing my adjustable home climbing wall from the construction over the wooden holds.

Constructing a wooden climbing foothold with FreeCAD

info@gordonlesti.com (Gordon Lesti) — Wed, 24 Mar 2021 23:00:00 GMT

A small tutorial to construct a simple wooden climbing foothold with FreeCAD.

Using a TrueType font in LaTeX with XeTeX

info@gordonlesti.com (Gordon Lesti) — Sat, 12 Dec 2020 23:00:00 GMT

A tutorial that shows the usage of TruType fonts in LaTeX with the help of XeTeX.

What are my GPS coordinates?

info@gordonlesti.com (Gordon Lesti) — Wed, 04 Nov 2020 23:00:00 GMT

A small tool that gives you your current GPS coordinates.

Interval timer tool

info@gordonlesti.com (Gordon Lesti) — Sun, 12 Apr 2020 22:00:00 GMT

A small tool with a interval timer clock counter for fitness exercises for example.

Longest common subsequence calculation in PHP with UTF-8 strings

info@gordonlesti.com (Gordon Lesti) — Wed, 16 Oct 2019 22:00:00 GMT

A UTF-8 supporting PHP library to calculate the length of the longest common subsequence of two strings.

Nonsmoking benefit calculator

info@gordonlesti.com (Gordon Lesti) — Mon, 18 Jun 2018 22:00:00 GMT

A small tool that calculates the saved money and not smoked cigarettes to show the benefit of nonsmoking.

Create a list of notified events in Shopware 5

info@gordonlesti.com (Gordon Lesti) — Fri, 13 Apr 2018 22:00:00 GMT

Explains an easy way to create a list of notified events in Shopware.

Creating a handwritten TrueType font in Linux

info@gordonlesti.com (Gordon Lesti) — Tue, 20 Mar 2018 23:00:00 GMT

A small tutorial that shows the creation of a handwritten TrueType font in Linux with FontForge and Inkscape.

Magento Stammtisch Meetup Berlin - February 2018

info@gordonlesti.com (Gordon Lesti) — Fri, 23 Feb 2018 23:00:00 GMT

A short summary of the Magento Stammtisch Meetup Berlin in February 2018.

Insomnia - An Electron based API client

info@gordonlesti.com (Gordon Lesti) — Sun, 14 Jan 2018 23:00:00 GMT

Presenting Insomnia, an Electron based API client application.

Create Kali Linux VirtualBox image

info@gordonlesti.com (Gordon Lesti) — Thu, 04 Jan 2018 23:00:00 GMT

A tutorial to create a Kali Linux VirtualBox image for security checks agains local webservers.

Mathematic expressions in HTML with KaTeX

info@gordonlesti.com (Gordon Lesti) — Thu, 21 Dec 2017 23:00:00 GMT

A small example of KaTeX, a JavaScript library to render mathematic expressions in the browser.

Digitize a VHS tape with FFmpeg and EasyCAP on Linux

info@gordonlesti.com (Gordon Lesti) — Mon, 11 Dec 2017 23:00:00 GMT

How to digitize old VHS tapes with FFmpeg and EasyCAP on Linux.

Custom code highlighting in LaTeX

info@gordonlesti.com (Gordon Lesti) — Fri, 08 Dec 2017 23:00:00 GMT

Small tutorila for LaTeX code highlighting with listings on a Dockerfile example.

Regular expression testing tool

info@gordonlesti.com (Gordon Lesti) — Fri, 08 Dec 2017 23:00:00 GMT

A small tool to check regualr expressions in the browser with JavaScript.

Magento Stammtisch Meetup Berlin - November 2017

info@gordonlesti.com (Gordon Lesti) — Sun, 03 Dec 2017 23:00:00 GMT

A short summary of the Magento Stammtisch Meetup Berlin in November 2017

Fix audio drifts in video records with Kdenlive and FFmpeg

info@gordonlesti.com (Gordon Lesti) — Sat, 02 Dec 2017 23:00:00 GMT

Tutorial to fix audio drifts in recorded video movies with Kdenlive and FFmpeg.

Temporary Apache development web server in a Docker container

info@gordonlesti.com (Gordon Lesti) — Sun, 22 Oct 2017 22:00:00 GMT

A small command to run a temporary development Apache web server in a Docker container.

Create Grunt Docker image

info@gordonlesti.com (Gordon Lesti) — Fri, 20 Oct 2017 22:00:00 GMT

A small Dockerfile for a Grunt Docker image with npm and a usgae explanation.

Create Debian 9 Stretch USB installation flash drive

info@gordonlesti.com (Gordon Lesti) — Mon, 16 Oct 2017 22:00:00 GMT

A tutorial to create a Debian 9 Stretch USB installation flash drive.

What is my IP address? - Tool

info@gordonlesti.com (Gordon Lesti) — Wed, 04 Oct 2017 22:00:00 GMT

A small tool to check what my IP address is. Plus some MaxMind GeoIP informations about the location of the IP.

Magento Stammtisch Meetup Berlin - September 2017

info@gordonlesti.com (Gordon Lesti) — Mon, 02 Oct 2017 22:00:00 GMT

A short review of the Magento Stammtisch Meetup Berlin at September 2017.

A D3 precission and recall diagram example

info@gordonlesti.com (Gordon Lesti) — Thu, 10 Aug 2017 22:00:00 GMT

A example for a D3 precission and recall diagram.

Base64 encoding and decoding tool

info@gordonlesti.com (Gordon Lesti) — Mon, 07 Aug 2017 22:00:00 GMT

A small online tool for Base64 encoding and decoding.

URL encode and decode tool

info@gordonlesti.com (Gordon Lesti) — Sun, 30 Jul 2017 22:00:00 GMT

A small online tool to URL encode and decode strings.

D3 time series example

info@gordonlesti.com (Gordon Lesti) — Sat, 22 Jul 2017 22:00:00 GMT

A small example for time series illustration with D3.

Building a LaTeX Docker image

info@gordonlesti.com (Gordon Lesti) — Fri, 26 May 2017 22:00:00 GMT

Building and using a simple LaTeX Docker image with increased memory.

Debian - Increase LaTeX main memory size

info@gordonlesti.com (Gordon Lesti) — Fri, 26 May 2017 22:00:00 GMT

Increase LaTeX main memory size for Tex Live on Debian.

Linux - Audio notification after long running command has finished

info@gordonlesti.com (Gordon Lesti) — Sun, 07 May 2017 22:00:00 GMT

A small trick to remind me that a long running command has finished is a audio notification in Linux.

C language - trigger key events in Linux with xdo

info@gordonlesti.com (Gordon Lesti) — Tue, 02 May 2017 22:00:00 GMT

An hello world example to trigger key events in Linux with the c library xdo.

LaTeX - Illustrate similarity measures of time series

info@gordonlesti.com (Gordon Lesti) — Wed, 26 Apr 2017 22:00:00 GMT

Illustrate similarity measures of time series in LaTeX with PGFPlots tikzpictures.

LaTeX - Multidimensional time series PGFPlots tikzpicture

info@gordonlesti.com (Gordon Lesti) — Tue, 25 Apr 2017 22:00:00 GMT

An example for multidimensional time series represented as PGFPlots tikzpicture in LaTeX documents.

ownCloud desktop client for Debian repository with GPG error

info@gordonlesti.com (Gordon Lesti) — Thu, 20 Apr 2017 22:00:00 GMT

The ownCloud desktop client for Debian repository is throwing an GPG error on update.

Testing a website in Safari with Mac OS X VirtualBox

info@gordonlesti.com (Gordon Lesti) — Wed, 19 Apr 2017 22:00:00 GMT

Small usage example of vagrant-box-osx, a Mac OS X Vagrant box for VirtualBox to test websites in Safari.

LaTeX - Scale and change aspect ratio of PGFPlots tikzpicture

info@gordonlesti.com (Gordon Lesti) — Thu, 30 Mar 2017 22:00:00 GMT

Shows how to scale or change aspect ratio of a LaTeX PGFPlots tikzpicture on a minimal example.

LaTeX - Load table data for PGFPlots tikzpicture

info@gordonlesti.com (Gordon Lesti) — Wed, 29 Mar 2017 22:00:00 GMT

A minimal example for loading data from dat file via table in LaTeX PGFPlots tikzpicture.

Magento 2 DependencyWheel

info@gordonlesti.com (Gordon Lesti) — Thu, 09 Feb 2017 23:00:00 GMT

Magento 2 composer dependencies visualized as interactive D3 chord diagram.

Persistent directories for one-way Docker containers

info@gordonlesti.com (Gordon Lesti) — Wed, 08 Feb 2017 23:00:00 GMT

One-way docker containers will be removed after execution, but sometimes it would be nice to have persistent directory.

Linux - Convert all Ogg files in a directory to MP3

info@gordonlesti.com (Gordon Lesti) — Tue, 07 Feb 2017 23:00:00 GMT

A small bash script to convert all Ogg Vorbis files in a directory to MP3.

Book recommendation - Docker for Developers

info@gordonlesti.com (Gordon Lesti) — Thu, 26 Jan 2017 23:00:00 GMT

A small bookreview of Docker for Developers from Chris Tankersley.

Building a Gradle Docker image

info@gordonlesti.com (Gordon Lesti) — Sun, 22 Jan 2017 23:00:00 GMT

Building and using a simple Gradle 3.3 Docker image for Java projects.

Run Java command line in Docker containers

info@gordonlesti.com (Gordon Lesti) — Sat, 21 Jan 2017 23:00:00 GMT

Simple example for Java interpreter, compiler and Gradle that are running in Docker containers

Levenshtein distance in PHP without 255 characters limit

info@gordonlesti.com (Gordon Lesti) — Wed, 18 Jan 2017 23:00:00 GMT

A small library that provides a plain PHP levenshtein distance function without 255 characters limit.

Configure host in Windows VirtualBox to reach local webserver

info@gordonlesti.com (Gordon Lesti) — Sat, 14 Jan 2017 23:00:00 GMT

Configure host in Windows VirtualBox to reach webserver of host machine.

Run different php-cli versions with Docker

info@gordonlesti.com (Gordon Lesti) — Sat, 14 Jan 2017 23:00:00 GMT

A simple example to run different php-cli versions with Docker.

Inaccurate rounding with decimal digits

info@gordonlesti.com (Gordon Lesti) — Tue, 10 Jan 2017 23:00:00 GMT

Some common errors that happen when rounding floating point numbers with decimal digits.

Responsive embedded D3 SVG

info@gordonlesti.com (Gordon Lesti) — Fri, 06 Jan 2017 23:00:00 GMT

A small example for a responsive embedded D3 SVG.

Inexact rounding up or down with decimal digits

info@gordonlesti.com (Gordon Lesti) — Wed, 04 Jan 2017 23:00:00 GMT

Shows a common error when rounding numbers up or down with decimal digits in Java, Python or JavaScript.

MathJax - Mathematical expressions via JavaScript

info@gordonlesti.com (Gordon Lesti) — Tue, 03 Jan 2017 23:00:00 GMT

MathJax is a JavaScript engine to display mathematical expressions in web browsers.

CSS conflict between Bootstrap 4 and Prism

info@gordonlesti.com (Gordon Lesti) — Mon, 02 Jan 2017 23:00:00 GMT

Bootstrap 4 is styling the tag class and that leads to a conflict with Prism syntax highlighting.

Upgrade from Bootstrap version 3 to 4

info@gordonlesti.com (Gordon Lesti) — Mon, 02 Jan 2017 23:00:00 GMT

Just a small overview what has changed on my blog as I upgraded from Bootstrap 3 to version 4.

QUnit with Grunt - A minimal JavaScript unittest example

info@gordonlesti.com (Gordon Lesti) — Wed, 21 Dec 2016 23:00:00 GMT

A minimal example for unittesting in JavaScript with Qunit and Grunt as task runner.

ImageMagick - Resize all images in a directory

info@gordonlesti.com (Gordon Lesti) — Wed, 21 Dec 2016 23:00:00 GMT

Combines bash loop with ImageMagick convert to resize all images in a directory.

Magento 2 email template layout directives

info@gordonlesti.com (Gordon Lesti) — Tue, 20 Dec 2016 23:00:00 GMT

Explains the usage of the layout directives in Magento 2 email templates

Linux - Bluetooth version of connected devices

info@gordonlesti.com (Gordon Lesti) — Mon, 19 Dec 2016 23:00:00 GMT

Testing JavaScript Web Bluetooth in Chromium on Linux with Ubuntu 16.10

A Prism based web text editor with syntax highlighting

info@gordonlesti.com (Gordon Lesti) — Mon, 12 Dec 2016 23:00:00 GMT

A small prototype for Prism syntax highlighter based web text editor.

Local browser storage over many tabs

info@gordonlesti.com (Gordon Lesti) — Wed, 07 Dec 2016 23:00:00 GMT

I just want to test the behavior of browsers local storage over many windows.

Digitize a vinyl record with Audacity on Linux

info@gordonlesti.com (Gordon Lesti) — Sun, 04 Dec 2016 23:00:00 GMT

How to digitize a vinyl record with Audacity on Linux.

A audio noise filter in JavaScript - quantile based

info@gordonlesti.com (Gordon Lesti) — Fri, 02 Dec 2016 23:00:00 GMT

A noise spectrum estimation and elimination filter written in JavaScript based on quantiles.

JSON - beautifier and minifier

info@gordonlesti.com (Gordon Lesti) — Fri, 02 Dec 2016 23:00:00 GMT

A small tool to beautify or minify JSON data.

A audio noise filter in JavaScript - speech / non-speech classifcation

info@gordonlesti.com (Gordon Lesti) — Sun, 27 Nov 2016 23:00:00 GMT

A noise spectrum estimation and elimination filter written in JavaScript based on frame wise speech / non-speech classifcation.

Use TkInter without mainloop

info@gordonlesti.com (Gordon Lesti) — Thu, 24 Nov 2016 23:00:00 GMT

Use Pythons de-facto standard GUI TkInter without the blocking mainloop.

Web performance checking with sitespeed.io

info@gordonlesti.com (Gordon Lesti) — Thu, 24 Nov 2016 23:00:00 GMT

Web performance checking with a Docker image of sitespeed.io.

Reading Web Audio API with JavaScript

info@gordonlesti.com (Gordon Lesti) — Mon, 21 Nov 2016 23:00:00 GMT

Reading audio input from the Web Audio API in the browser with JavaScript.

Greenprint - A Prism syntax highlighting theme

info@gordonlesti.com (Gordon Lesti) — Tue, 15 Nov 2016 23:00:00 GMT

Greenprint is a theme for Prism syntax highlighting.

Prism - Code folding with details and summary

info@gordonlesti.com (Gordon Lesti) — Mon, 14 Nov 2016 23:00:00 GMT

Prism syntax highlighting and code folding with HTML5 tag details and summary.

Prism - syntax highlighting for Magento templates

info@gordonlesti.com (Gordon Lesti) — Wed, 09 Nov 2016 23:00:00 GMT

Prism syntax highlighting for Magento templates.

Change theme-color via JavaScript

info@gordonlesti.com (Gordon Lesti) — Thu, 03 Nov 2016 23:00:00 GMT

A small example that shows that it can make sense to change the theme-color of a HTML page.

Dynamic or lazy blocks in a CMS page with Lesti_FPC

info@gordonlesti.com (Gordon Lesti) — Wed, 02 Nov 2016 23:00:00 GMT

Explains how to make a block in a CMS page dynamic or lazy with Lesti_FPC.

Android chrome tab color

info@gordonlesti.com (Gordon Lesti) — Tue, 01 Nov 2016 23:00:00 GMT

Explains how to set the color of a android chrome tab with the meta theme-color.

Prism - Code Folding plugin prototype

info@gordonlesti.com (Gordon Lesti) — Fri, 28 Oct 2016 22:00:00 GMT

A prototype for a Prism code folding plugin to hide specific lines in the code.

Prism - Hooks list

info@gordonlesti.com (Gordon Lesti) — Sun, 23 Oct 2016 22:00:00 GMT

A list of Prism hooks and a short explaination how to generate them.

Inkscape - Change the color of markers

info@gordonlesti.com (Gordon Lesti) — Thu, 20 Oct 2016 22:00:00 GMT

How to change the color of markers at a stroke in Inkscape.

Magento 2 email template style directives

info@gordonlesti.com (Gordon Lesti) — Wed, 19 Oct 2016 22:00:00 GMT

Explains the usage of CSS and inline CSS directives in Magento 2 email templates.

Magento 2 email template logic directives

info@gordonlesti.com (Gordon Lesti) — Wed, 12 Oct 2016 22:00:00 GMT

Explains the usage of depend and if directives in Magento 2 email templates.

Magento 2 email template template directives

info@gordonlesti.com (Gordon Lesti) — Tue, 11 Oct 2016 22:00:00 GMT

Explains how to use child templates in Magento 2 email templates.

Magento 2 email template config directives

info@gordonlesti.com (Gordon Lesti) — Mon, 10 Oct 2016 22:00:00 GMT

Explains how to use configuration values in Magento 2 email templates.

Magento 2 email template translator directives

info@gordonlesti.com (Gordon Lesti) — Sun, 09 Oct 2016 22:00:00 GMT

Explains how to use the translator directives in Magento 2 email templates.

Magento 2 email template block directives

info@gordonlesti.com (Gordon Lesti) — Sat, 08 Oct 2016 22:00:00 GMT

Explains how to include a general block or a CMS block into a Magento 2 email template.

CSS blur overlay

info@gordonlesti.com (Gordon Lesti) — Mon, 19 Sep 2016 22:00:00 GMT

CSS blur overlay with SVG filters.

CSS background transitions with image sprites

info@gordonlesti.com (Gordon Lesti) — Sat, 17 Sep 2016 22:00:00 GMT

CCS background transitions with image sprites. Create a fade effect instead of a position transition.

Text differencing tool

info@gordonlesti.com (Gordon Lesti) — Mon, 22 Aug 2016 22:00:00 GMT

A small tool to show the differences between two texts. Similar to git diff.

Touch signature identification with JavaScript

info@gordonlesti.com (Gordon Lesti) — Fri, 15 Jul 2016 22:00:00 GMT

An example how to detect and identify a personal touch signature with JavaScript.

Ripping a DVD with HandBrake on Linux

info@gordonlesti.com (Gordon Lesti) — Wed, 13 Jul 2016 22:00:00 GMT

How to rip a DVD on Linux with HandBrake step by step.

Random Value Generators

info@gordonlesti.com (Gordon Lesti) — Thu, 07 Jul 2016 22:00:00 GMT

A collection of random value generators that I use pretty often.

Inkscape - Cut an object in half

info@gordonlesti.com (Gordon Lesti) — Wed, 06 Jul 2016 22:00:00 GMT

How to cut an object in half with Inkscape. Bisecting a circle or rectangle for example.

Digitize a cassette tape with Linux

info@gordonlesti.com (Gordon Lesti) — Wed, 29 Jun 2016 22:00:00 GMT

How to digitize a cassette tape with Audacity on Linux.

Connecting a Wii Remote Plus controller with Debian 8 (jessie)

info@gordonlesti.com (Gordon Lesti) — Tue, 28 Jun 2016 22:00:00 GMT

How to connect a Nintendo Wii Remote Plus controller with Debian 8 Jessie.

Bootstrap responsive embed aspect ratio

info@gordonlesti.com (Gordon Lesti) — Wed, 22 Jun 2016 22:00:00 GMT

Bootstrap Responsive embed has just aspect ration 16by9 and 4by3. This post shows how to create other aspect rations.

Fast Nearest Neighbour Classification

info@gordonlesti.com (Gordon Lesti) — Tue, 21 Jun 2016 22:00:00 GMT

A term paper about nearest neighbour search algorithms with benchmarks

Ignore pause in LaTeX beamer with handout

info@gordonlesti.com (Gordon Lesti) — Mon, 23 May 2016 22:00:00 GMT

How to ignore the pause command in the Latex beamer class.

Meet Magento 2016 Netherlands

info@gordonlesti.com (Gordon Lesti) — Mon, 16 May 2016 22:00:00 GMT

The slides of my presentation on the Meet Magento 2016 NL about Magento 2 content under version control.

PHPUnit compare generated PDF files with Imagick

info@gordonlesti.com (Gordon Lesti) — Wed, 30 Mar 2016 22:00:00 GMT

Explains how to compare two generated PDF files in PHP with the help of Imagick.

Create a list of dispatched events in Magento2

info@gordonlesti.com (Gordon Lesti) — Tue, 22 Mar 2016 23:00:00 GMT

Explains how to create a list of all dispatched events in Magento2.

Lesti_Fpc documentation - version 1.4.5

info@gordonlesti.com (Gordon Lesti) — Tue, 15 Mar 2016 23:00:00 GMT

Documemtation of Lesti_Fpc. A simple fullpage cache for Magento1.

Magento2 ObjectManager preferences

info@gordonlesti.com (Gordon Lesti) — Sun, 13 Mar 2016 23:00:00 GMT

What does the ObjectManager of Magento2 contain? How to get these preferences.

Magento2 extension development with Travis CI

info@gordonlesti.com (Gordon Lesti) — Tue, 08 Mar 2016 23:00:00 GMT

How to handle the Magento Connect authentication with Continous Integration by Travis CI.

Magento2 maintenance mode

info@gordonlesti.com (Gordon Lesti) — Sun, 06 Mar 2016 23:00:00 GMT

Small explanation about Magento2 and the maintenance mode. Where is the maintenance mode used.

Installing ownCloud 8.1 on a Raspberry Pi

info@gordonlesti.com (Gordon Lesti) — Wed, 24 Feb 2016 23:00:00 GMT

How to intsall ownCloud 8.1 in a Raspberry Pi with Raspbian.

Exhibition "Wer-nie-sah, der kann doch fühlen"

info@gordonlesti.com (Gordon Lesti) — Tue, 16 Feb 2016 23:00:00 GMT

A description of the first exhibition, "Wer-nie-sah, der kann doch fühlen" from Lesti at the February 26, 2016 in Berlin - Neukölln.

Unix timestamp to date tool

info@gordonlesti.com (Gordon Lesti) — Mon, 08 Feb 2016 23:00:00 GMT

A small tool to convert the unix timestamp into a date format in both directions.

Mount ext4 USB flash drive to Raspberry Pi

info@gordonlesti.com (Gordon Lesti) — Thu, 04 Feb 2016 23:00:00 GMT

How to mount a ext4 USB flash drive to a Raspberry Pi?

Change default users on Raspberry Pi

info@gordonlesti.com (Gordon Lesti) — Thu, 04 Feb 2016 23:00:00 GMT

How to change the default user of an Raspberry Pi to protect your Raspberry Pi a little bit more.

Network error - Download - Windows virtual machine

info@gordonlesti.com (Gordon Lesti) — Wed, 03 Feb 2016 23:00:00 GMT

A very easy solution for Network error when downloading large files with the browser. For example virtual machines from Windows.

Linux user management commands

info@gordonlesti.com (Gordon Lesti) — Tue, 02 Feb 2016 23:00:00 GMT

Some very common unix commands to handle user management. Like creating and deleting users on Linux.

Rotate every second page of a PDF file on Linux

info@gordonlesti.com (Gordon Lesti) — Sun, 31 Jan 2016 23:00:00 GMT

How to rotate single pages, edit and modify PDF files with PDFtk on Linux.

Create Debian 8 Jessie Vagrant Box

info@gordonlesti.com (Gordon Lesti) — Tue, 26 Jan 2016 23:00:00 GMT

How to create a Debian 8 Jessie Vagrant Box? Step by step with a lot of explanations.

Install Debian 8 Jessie Virtual Machine

info@gordonlesti.com (Gordon Lesti) — Fri, 22 Jan 2016 23:00:00 GMT

How to install a Debian 8 Jessie Virtual Machine? Step by step with a lot of images.

Create Debian 8 Jessie VirtualBox

info@gordonlesti.com (Gordon Lesti) — Thu, 21 Jan 2016 23:00:00 GMT

How to build a Debian 8 Jessie VirtualBox? Step by step with a lot of images.

HTML escape tool

info@gordonlesti.com (Gordon Lesti) — Tue, 19 Jan 2016 23:00:00 GMT

What are HTML special chars and how to escape them with a small tool written in javascript.

ASCII art helpers

info@gordonlesti.com (Gordon Lesti) — Mon, 18 Jan 2016 23:00:00 GMT

A small list of nice helpful ASCII art helpers that I use pretty often.

Broiler Demo Rainbow

info@gordonlesti.com (Gordon Lesti) — Sun, 17 Jan 2016 23:00:00 GMT

A small demo of broilerjs, a jQuery plugin and how to pick a color from an image by click.

Awesome Open Source Projects

info@gordonlesti.com (Gordon Lesti) — Thu, 14 Jan 2016 23:00:00 GMT

A small list of awesome open source projects that I use every day.

Meet Magento 2015 Netherlands

info@gordonlesti.com (Gordon Lesti) — Thu, 28 May 2015 22:00:00 GMT

The presentation of my talk about recommender systems at the Meet Magento 2015 in the Netherlands.

Vegan tomato garlic bread spread

info@gordonlesti.com (Gordon Lesti) — Wed, 01 Apr 2015 22:00:00 GMT

A short explanation of a vegan tomato garlic bread spread with a photo of it.

Creating a Search in Slim Framework with hooks

info@gordonlesti.com (Gordon Lesti) — Mon, 09 Mar 2015 23:00:00 GMT

A small idea how to create a small search with hooks in Slim Framework.

Magento Unconference 2015 Summary

info@gordonlesti.com (Gordon Lesti) — Mon, 09 Mar 2015 23:00:00 GMT

A short summary of the nicest Magento event in 2015, the Magento Unconference in Berlin.

CSS conflict between WordPress Twenty Fifteen and embedded Github Gists

info@gordonlesti.com (Gordon Lesti) — Thu, 19 Feb 2015 23:00:00 GMT

How to fix a CSS bug or conflict between Wordpress Twenty Fifteen and embedded Github Gists.

Multidimensional ArrayAccess in PHP is impossible

info@gordonlesti.com (Gordon Lesti) — Sat, 14 Feb 2015 23:00:00 GMT

What is the PHP interface ArrayAccess? How does it work? Is it supporting multidimensional acces?

Disable clickable links in Wordpress comments

info@gordonlesti.com (Gordon Lesti) — Fri, 16 Jan 2015 23:00:00 GMT

How to disable clickable links in Wordpress comments with a child theme.

Mage Unconference 2015

info@gordonlesti.com (Gordon Lesti) — Mon, 08 Dec 2014 23:00:00 GMT

Mage Unconference 2015. The Magento event for developers in Berlin.

Testing the quality of Lesti_Fpc

info@gordonlesti.com (Gordon Lesti) — Thu, 04 Dec 2014 23:00:00 GMT

How the quality of Lesti_Fpc has improved with Testing, Codesniffers, Messdetectors and Continous Integration?

Install Pencil on Debian

info@gordonlesti.com (Gordon Lesti) — Sun, 23 Nov 2014 23:00:00 GMT

How to install Pencil, an open-source GUI prototyping tool in Debian without firefox. Instead of that iceweasel.

Edit cacheTags and Parameters via events in Lesti_Fpc 1.3.2

info@gordonlesti.com (Gordon Lesti) — Wed, 19 Nov 2014 23:00:00 GMT

There are some new events that Lesti_Fpc is dispacthing to make controll of full page cache more easy in Magento.

Simulate Mouse Clicks in QUnit on Coordinates

info@gordonlesti.com (Gordon Lesti) — Thu, 18 Sep 2014 22:00:00 GMT

How to simulate a mouse click on a special position in Qunit?

Book recommendation - Magento Product Types: Developer's Guide

info@gordonlesti.com (Gordon Lesti) — Wed, 21 May 2014 22:00:00 GMT

Bookreview of Magento Product Types Developers Guide from Oleg Ishenko.

Vagrant Warning: Connection timeout

info@gordonlesti.com (Gordon Lesti) — Tue, 20 May 2014 22:00:00 GMT

The are many reasons for connection timeouts with vagrant and ssh. One reason can be the BIOS if it prevents virtualization of a 64 bit systems.

Different Build Scripts for different Commits in Gitlab Ci

info@gordonlesti.com (Gordon Lesti) — Sun, 18 May 2014 22:00:00 GMT

A short explanation how to change the build script in Gitlab CI on every branch or commit.

Installing Gitlab 6-8 and Gitlab Ci 5-0 with Ruby 2.1.2 on Ubuntu 14.04 LTS

info@gordonlesti.com (Gordon Lesti) — Thu, 15 May 2014 22:00:00 GMT

Installation of Gitlab 6-8 with Ruby 2.1.2 on Ubuntu 14.04 LTS.

My new ZTE Open C with FirefoxOS 1.3

info@gordonlesti.com (Gordon Lesti) — Thu, 01 May 2014 22:00:00 GMT

Some photos of my new ZTE Open C with Firefox OS.

Building xmpp (jabber) app for Firefox OS - Part1

info@gordonlesti.com (Gordon Lesti) — Wed, 02 Apr 2014 22:00:00 GMT

An idea how to build an xmpp or jabber app for Firefox OS.

Building Lesti_Fpc2

info@gordonlesti.com (Gordon Lesti) — Wed, 19 Feb 2014 23:00:00 GMT

The start of Lesti_Fpc2. A new idea how we can make the full page cache for Magento faster.

Fuzzy Fulltext Search with Mysql

info@gordonlesti.com (Gordon Lesti) — Tue, 04 Feb 2014 23:00:00 GMT

A small idea how fuzzy fulltext search can work with Mysql and PHP.

Lesti_Fpc - Magento 1.7 and the Welcome Message

info@gordonlesti.com (Gordon Lesti) — Thu, 23 Jan 2014 23:00:00 GMT

How to handle the welcome message of Magento with Lesti_Fpc.

Lesti_Fpc and Miss Uri Params

info@gordonlesti.com (Gordon Lesti) — Thu, 23 Jan 2014 23:00:00 GMT

What are Miss Uri Params in Lesti_Fpc? How to exclude a page from cache in Magento.

Tutorial: Magento2 - Hello World

info@gordonlesti.com (Gordon Lesti) — Mon, 09 Sep 2013 22:00:00 GMT

A short Hello World example on a very early state of development of Magento2.

Book recommendation - PHP Data Persistence with Doctrine 2 ORM

info@gordonlesti.com (Gordon Lesti) — Thu, 05 Sep 2013 22:00:00 GMT

Bookreview of PHP Data Persistence with Doctrine 2 ORm from Michael Romer.

Where is app/etc/modules/.xml in Magento2

info@gordonlesti.com (Gordon Lesti) — Thu, 05 Sep 2013 22:00:00 GMT

The file app/etc/modules/.xml is missing in Magento2. It is not necessary anymore.

First Contact with Magento2

info@gordonlesti.com (Gordon Lesti) — Wed, 04 Sep 2013 22:00:00 GMT

My first contact with Magento2. A very early view on the state of development.

Lesti_Fpc and layered navigation

info@gordonlesti.com (Gordon Lesti) — Sat, 17 Aug 2013 22:00:00 GMT

A short explanation how to handle a layered navigation with filter and Lesti_Fpc in Magento.

Book recommendation - Backbone.js Application Development

info@gordonlesti.com (Gordon Lesti) — Wed, 14 Aug 2013 22:00:00 GMT

Bookreview about Backbone.js Application Development from Thomas Hunter II.

Resubmit your Comment in Magento Connect

info@gordonlesti.com (Gordon Lesti) — Sat, 10 Aug 2013 22:00:00 GMT

Magento Connect sucks. You always have to resubmit your comment.

Developing with Vagrant - Part 2

info@gordonlesti.com (Gordon Lesti) — Mon, 22 Jul 2013 22:00:00 GMT

A small tutorial on Vagrant with chef to create an LAMP stack with Apache2, Mysql and PHP.

Developing with Vagrant - Part 1

info@gordonlesti.com (Gordon Lesti) — Sat, 20 Jul 2013 22:00:00 GMT

A small tutorial on Vagrant for development. This is more a copy of the offical documentation of Vagrant.

How to find the name in layout of a block in Magento

info@gordonlesti.com (Gordon Lesti) — Thu, 18 Jul 2013 22:00:00 GMT

A short explanation how you can find the name of a block in layout in Magento for Lesti_Fpc.

What are Uri Params in Lesti_Fpc?

info@gordonlesti.com (Gordon Lesti) — Wed, 17 Jul 2013 22:00:00 GMT

A short explanation what Uri Params in Lesti_Fpc are and how to use them to decrease the cache size.

Create Eventlist in Magento

info@gordonlesti.com (Gordon Lesti) — Sun, 07 Jul 2013 22:00:00 GMT

How to create an event list in Magento? Also for dynamic event names.

Piwik - Liberating Web Analytics

info@gordonlesti.com (Gordon Lesti) — Tue, 02 Jul 2013 22:00:00 GMT

A short presentation of Piwik as alternative to Google Analytics and the easy way to install it.

What are lazy and dynamic Blocks in Lesti_Fpc?

info@gordonlesti.com (Gordon Lesti) — Tue, 02 Jul 2013 22:00:00 GMT

Lazy and dynamic blocks in Lesti_Fpc will be explained in detail. Are they the same as hole punching.

How does Lesti_Fpc work?

info@gordonlesti.com (Gordon Lesti) — Fri, 17 May 2013 22:00:00 GMT

What is the workflow of Lesti_Fpc? A full page cache for Magento that works only with events.

Magento dependencies

info@gordonlesti.com (Gordon Lesti) — Sun, 07 Apr 2013 22:00:00 GMT

How important are dependencies in Magento? Which modul or extension depends on an other will be shown with a full graph.