diff --git a/.gitignore b/.gitignore
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+specifications/system/document.pdf
+specifications/system/preamble.tex
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
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+
+---
+stages:
+  - typeset
+
+design_specifications:
+  stage: typeset
+  image: registry.gitlab.com/silkeh/latex:latest
+  script:
+    - cp misc/preamble.tex specifications/system/preamble.tex
+    - cd specifications/system/
+    - latexmk -xelatex document.tex
+    - mv document.pdf ../../design_specifications.pdf
+  artifacts:
+    paths:
+      - design_specifications.pdf
+  only:
+    refs:
+      - web
+      - branches
+      - tags
+    changes:
+      - specifications/system/*
+      - misc/preamble.tex
diff --git a/specifications/system/content/description.tex b/specifications/system/content/description.tex
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+\section{description}
+Our Tweet writer for a whiteboard will be able to write a tweet on a whiteboard.
+The tweet has to be updated.
+Therefore, the current content of the whiteboard has to be wiped.
+Followed by a total of 140 characters added on the whiteboard.
+As it is a whiteboard, we want the text to be readable at a 10 meter distance.
+We like some color aswell. So up to three colors is required.
+
diff --git a/specifications/system/content/introduction.tex b/specifications/system/content/introduction.tex
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+\chapter{Introduction}
+
+This document is part of a Master's Thesis.
+The goal is to test a Design Methodology for hardware based CPS.
+This document self is the design specification of the hardware and therefore part of the design method.
+The hardware for this design will be a Tweet writer for a white board.
+It is specifically chosen to cover the different aspects of the design method.
+
diff --git a/specifications/system/content/specifications.tex b/specifications/system/content/specifications.tex
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+++ b/specifications/system/content/specifications.tex
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+\chapter{Specifications}
+
+\section{Format}
+To be able to show a tweet:
+\begin{itemize}
+\item The Writer shall be able to write at least 50 characters per line.
+\item The Writer shall be able to write at least 5 lines of text.
+\item The Writer shall display the author, time, content, and number of retweets, favorites and replies in plain-text.
+\item The Writer shall plot characters with a size that is readable from 4 meters for a person with good eyesight.
+\item The Writer shall plot in a regular used font with corresponding character spacing.
+\item When a new tweet is send to the Writer, the Writer, shall wipe the existing tweet and write down a new tweet.
+\item If the Writer is not wiping or writing then the Writer shall not obstruct the view of the whiteboard.
+\item While writing, the Writer shall have a writing speed of at least 1 character per second.
+\item If the Writer is tasked to wipe the tweet, the Writer shall wipe the tweet within 60 seconds
+\item When a reset-signal is send to the Writer, the Writer shall recalibrate its position on the board.
+\item When a wipe-signel is send to the Writer, the Writer shall wipe the board clean.
+\item The Writer shall not damage itself.
+\end{itemize}
+
+\section{Construction}
+The following limitations are based on the limited tools to that are available to me, the designer and developer.
+The lab of the university is closed for everybody including technical staff as a reaction to the anti-CoViD-19 measures.
+As a result I am bounded to my own tools and materials that I can afford.
+\begin{itemize}
+\item The Writer shall not exceed a total cost in materials and/or tools of €200.
+\item The Writer shall be constructed with simple tools in the following list:
+    \begin{itemize}
+        \item Screwdrivers (Hex/Inbus, Torx, Philips, etc) in a, although limited, wide variation of size.
+        \item Drill
+        \item Screwtap set
+        \item Jigsaw
+        \item Wrenches
+        \item Soldering iron
+        \item Various Pliers 
+        \item PLA 3D printer
+    \end{itemize}
+\item The Writer shall not contain elements that can harm anyone during construction or operation.
+\end{itemize}
+
diff --git a/specifications/system/document.tex b/specifications/system/document.tex
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+++ b/specifications/system/document.tex
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+\documentclass[final,english,titlepage,nomath]{siltex-report}
+\include{preamble}
+
+\title{Design Specifications}
+\subtitle{}
+\course{}
+\faculty{\large Electrical Engineering, Mathematics and Computer Science}
+\author{%
+    Wouter Horlings
+}
+
+\begin{document}
+\maketitle
+\input{introduction}
+\input{description}
+\input{specifications}
+
+
+\end{document}