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<!doctype html><html lang=en><head><title>Self-built UV exposure unit (LED) :: Privacynerd's blog</title><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="If you&rsquo;ve been around the (electronics) DIY scene for a while, at some point you can&rsquo;t avoid circuit boards (printed circuit boards/PCBs). The main advantages over soldering circuits by hand on perforated or strip-grid boards are that they are easier to replicate (once designed a circuit can theoretically be produced as often as you like) and that space can be used more efficiently (a board is almost always smaller than a soldered perforated grid board with the same circuit). Ultimately, devices with circuit boards also simply look more professional. There are certainly more advantages (and of course also disadvantages!), but I will not list them here for the sake of simplicity.
"><meta name=keywords content><meta name=robots content="noodp"><link rel=canonical href=https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/><link rel=stylesheet href=https://blog.privacynerd.de/css/buttons.min.86f6b4c106b6c6eb690ae5203d36b442c1f66f718ff4e8164fa86cf6c61ad641.css><link rel=stylesheet href=https://blog.privacynerd.de/css/code.min.4f0ccc8439f99bf7f7970298556b94011aabc1fcae743b6842fc3361a2da9ea3.css><link rel=stylesheet href=https://blog.privacynerd.de/css/fonts.min.5bb7ed13e1d00d8ff39ea84af26737007eb5051b157b86fc24487c94f3dc8bbe.css><link rel=stylesheet href=https://blog.privacynerd.de/css/footer.min.eb8dfc2c6a7eafa36cd3ba92d63e69e849e2200e0002a228d137f236b09ecd75.css><link rel=stylesheet href=https://blog.privacynerd.de/css/gist.min.a751e8b0abe1ba8bc53ced52a38b19d8950fe78ca29454ea8c2595cf26aad5c0.css><link rel=stylesheet href=https://blog.privacynerd.de/css/header.min.75c7eb0e2872d95ff48109c6647d0223a38db52e2561dd87966eb5fc7c6bdac6.css><link rel=stylesheet href=https://blog.privacynerd.de/css/main.min.15870410d15d02abd22fb5ef00996f65a00d04b3a7435e9f83831c7c2298de88.css><link rel=stylesheet href=https://blog.privacynerd.de/css/menu.min.3c17467ebeb3d38663dce68f71f519901124fa5cbb4519b2fb0667a21e9aca39.css><link rel=stylesheet href=https://blog.privacynerd.de/css/pagination.min.bbb986dbce00a5ce5aca0504b7925fc1c581992a4bf57f163e5d69cc1db7d836.css><link rel=stylesheet href=https://blog.privacynerd.de/css/post.min.e6dddd258e64c83e05cec0cd49c05216742d42fc8ecbfbe6b67083412b609bd3.css><link rel=stylesheet href=https://blog.privacynerd.de/css/syntax.min.a0773cce9310cb6d8ed23e50f005448facf29a53001b57e038828daa466b25c0.css><link rel=stylesheet href=https://blog.privacynerd.de/css/terminal.min.e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.css><link rel=stylesheet href=https://blog.privacynerd.de/css/terms.min.b81791663c3790e738e571cdbf802312390d30e4b1d8dc9d814a5b5454d0ac11.css><link rel=stylesheet href=https://blog.privacynerd.de/terminal.css><link rel="shortcut icon" href=https://blog.privacynerd.de/favicon.png><link rel=apple-touch-icon href=https://blog.privacynerd.de/apple-touch-icon.png><meta name=twitter:card content="summary"><meta name=twitter:site content><meta name=twitter:creator content><meta property="og:locale" content="en"><meta property="og:type" content="article"><meta property="og:title" content="Self-built UV exposure unit (LED)"><meta property="og:description" content="If you&rsquo;ve been around the (electronics) DIY scene for a while, at some point you can&rsquo;t avoid circuit boards (printed circuit boards/PCBs). The main advantages over soldering circuits by hand on perforated or strip-grid boards are that they are easier to replicate (once designed a circuit can theoretically be produced as often as you like) and that space can be used more efficiently (a board is almost always smaller than a soldered perforated grid board with the same circuit). Ultimately, devices with circuit boards also simply look more professional. There are certainly more advantages (and of course also disadvantages!), but I will not list them here for the sake of simplicity.
"><meta property="og:url" content="https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/"><meta property="og:site_name" content="Privacynerd's blog"><meta property="og:image" content="https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/cover.jpg"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="627"><meta property="article:published_time" content="2025-04-14 08:11:20 +0200 CEST"><style>#banner{width:100%;height:2rem;display:grid;grid-template-columns:1fr auto;background:var(--accent)}#banner span{display:flex;align-items:center;justify-content:center}#banner a{color:var(--background);display:inline}#banner>button{padding:0 5px 0 0;margin:0}</style><div id=banner><span><a href=https://git.privacynerd.de/git.privacynerd.de/blog.privacynerd.de>Construction site 🚧 | Work in progress</a></span></div></head><body><div class="container center"><header class=header><div class=header__inner><div class=header__logo><a href=/en><div class=logo>Privacynerd's blog</div></a></div><ul class="menu menu--mobile"><li class=menu__trigger>Menu&nbsp;▾</li><li><ul class=menu__dropdown><li><a href=/en/about>About</a></li><li><a href=/en/tags>Tags</a></li><hr><li><b><a href=/en/posts/2025/04/diy-uv-pcb-exposure-unit/>English</a></b></li><li><a href=/de/posts/2025/04/diy-uv-pcb-exposure-unit/>Deutsch</a></li></ul></li></ul><ul class="menu menu--desktop menu--language-selector"><li class=menu__trigger>en&nbsp;▾</li><li><ul class=menu__dropdown><li><b><a href=/en/posts/2025/04/diy-uv-pcb-exposure-unit/>English</a></b></li><li><a href=/de/posts/2025/04/diy-uv-pcb-exposure-unit/>Deutsch</a></li></ul></li></ul></div><nav class=navigation-menu><ul class="navigation-menu__inner menu--desktop"><li><a href=/en/about>About</a></li><li><a href=/en/tags>Tags</a></li></ul></nav></header><div class=content><article class=post><h1 class=post-title><a href=https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/>Self-built UV exposure unit (LED)</a></h1><div class=post-meta><time class=post-date>2025-04-14</time><span class=post-reading-time>11 minutes to read (1122 words)</span></div><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/cover.jpg class=post-cover alt="Self-built UV exposure unit (LED)" title="Cover Image"><div class=table-of-contents><h2>Table of Contents</h2><nav id=TableOfContents><ul><li><a href=#the-housing>The housing</a></li><li><a href=#the-leds>The LEDs</a></li><li><a href=#the-lacquering>The lacquering</a></li><li><a href=#the-control-unit>The control unit</a></li><li><a href=#exposure-time>The practical part - Exposure time</a></li></ul></nav></div><div class=post-content><div><p>If you&rsquo;ve been around the (electronics) DIY scene for a while, at some point you can&rsquo;t avoid circuit boards (printed circuit boards/PCBs). The main advantages over soldering circuits by hand on perforated or strip-grid boards are that they are easier to replicate (once designed a circuit can theoretically be produced as often as you like) and that space can be used more efficiently (a board is almost always smaller than a soldered perforated grid board with the same circuit). Ultimately, devices with circuit boards also simply look more professional. There are certainly more advantages (and of course also disadvantages!), but I will not list them here for the sake of simplicity.</p><p>Nowadays, it is very easy to have (self-)created circuit board designs manufactured, with relevant offers from China you pay no more than €5 for a simple circuit board with 2 sides. However, the price does not include the shipping costs and the time you have to wait for your PCBs. If you are not planning to produce several different designs a year, or only need a special circuit board once, you are well served with such offers. However, if you often need custom-made products, it can quickly become lucrative (even with the Chinese offers) to bring the production in-house. At the end of the day, it&rsquo;s fun and at least gives you the feeling of a little independence to make your own circuit boards!</p><p>So after dreaming of making my own circuit boards for some time, I have now gone one step further in the realization. There are various ways to produce printed circuit boards yourself. The cheapest method is probably exposing a blank PCB with a photopositive coating and then developing and finally etching the exposed areas. Building the etching device myself seemed too tricky, so I decided to buy a used <a href=https://gie-tec.de/produkt/aetzgeraete-fuer-platinen/>Ätzgerät 1 from pro-ma</a>, which was very cheap at €50. But what you can certainly build yourself is the <strong>UV exposure unit</strong>. There are different approaches here, I just want to share mine here (see e.g. <a href=https://www.all4hardware4u.de/platinenherstellung/belichtung/belichtungsgeraet-mit-uv-leds/>here</a> or also <a href=http://www.fdm-ware.de/UV-Led/>here</a> for the modLine truncated
the LEDs!) and painted it several times according to the instructions on the spray can and left it to dry overnight.</p><figure><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/masked_for_painting.jpg alt="Picture of the box masked for painting"><figcaption><p>Box is masked, about to be painted!</p></figcaption></figure><figure><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/painted_inside.jpg alt="Picture of the inside of the painted box"><figcaption><p>It&rsquo;s shiny!</p></figcaption></figure><h2 id=the-control-unit>The control unit<a href=#the-control-unit class=hanchor arialabel=Anchor>#</a></h2><p>Here I was faced with a choice: install a simple switch or a more complex logic with a timer function? The idea of the built-in timer seemed appealing - finally programming something hardware-related again. So I assembled a breadboard (perhaps the last one ever?!) with a Raspberry Pi Pico, relays, a connection for an LCD display and some control elements, programmed a small interface with my existing libraries and the electronics were ready! To be installed in the housing, it still needed a cover. All the necessary information can be found in the corresponding <a href=https://git.privacynerd.de/BlueFox/uv-belichter-software>git repository</a>!</p><figure><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/controller-on-dividing-wall.jpg alt="Picture of the control unit"><figcaption><p>The control unit</p></figcaption></figure><figure><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/front-panel.jpg alt="Image of the front panel with the LCD and control elements in operation"><figcaption><p>Front panel with LCD and control elements in operation</p></figcaption></figure><h2 id=exposure-time>The practical part - Exposure time<a href=#exposure-time class=hanchor arialabel=Anchor>#</a></h2><p>So what does it look like in practice - the crucial question at the end. I would like to say that this is my first experience with manual PCB production. I used a simple blinky circuit (which was also my first completely self-made PCB design) for the tests.</p><figure><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/blinky-test-pcb.png alt="Side-by-side view of the printed circuit and the view on the computer with all layers"><figcaption><p>The test object&mldr;</p></figcaption></figure><p>So, my first experiences with the self-built exposure unit were mixed. The first attempt with 3 minutes exposure time went somewhat wrong. Specifically, no contours were visible even after 10-20 minutes in the developer at room temperature, and nothing happened even after 20-30 minutes etching. The second attempt was more promising, after 30 minutes of exposure the first contours could be seen after about 15 minutes of development, which actually disappeared during etching. After a few more attempts, I finally came up with the idea of working with two overlapping films instead of one, which meant that much less light came through the printed areas. The results were suddenly improving, and after a short time the circuit board was of sufficient quality for the circuit to function!</p><figure><img src=/en/posts/2025/04/diy-uv-pcb-exposure-unit/first-diy-pcbs.jpg alt="Collage of the first manufacturing attempts up to the first functional PCB"><figcaption><p>&mldr;and the results</p></figcaption></figure><p>So: The exposure time for successful results is between 40 and 45 minutes. Admittedly, that&rsquo;s quite a long time, but it&rsquo;s sufficient for my first attempts and more than acceptable considering the price of a finished exposure unit (which can easily run into the hundreds) (the exposure unit costs around €30-50 in total - and building it was a lot of fun!). For shorter exposure times, I am considering increasing the number of LEDs afterwards. But that&rsquo;s a story for another time.</p></div></div><div class=pagination><div class=pagination__title><span class=pagination__title-h>Read other posts</span><hr></div><div class=pagination__buttons><a href=https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/ class="button inline next">[<span class=button__text>How everything began - or: the first post!</span>] ></a></div></div></article></div><footer class=footer><style>.antidiscovery i{display:none}</style><div class=footer__inner><div class="copyright copyright--user"><span class=antidiscovery>© 2025 <i>L</i>B<i>P</i>e<i>o</i>n<i>i</i>j<i>n</i>a<i>c</i>m<i>G</i>i<i>N</i>n<i>U</i> <i>S</i>B<i>k</i>u<i>o</i>r<i>K</i>k<i>y</i>h<i>f</i>a<i>H</i>r<i>r</i>d<i>y</i>t</span>
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<!doctype html><html lang=en><head><title>How everything began - or: the first post! :: Privacynerd's blog</title><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="Initial considerations I&rsquo;ve been thinking about how to write this post for a long time. What needs to be told, what is unimportant? A lot has to be left out for the sake of clarity, and I might not even remember some of it. In any case, I would like to use this article to explain my intention in starting this blog. But to explain that, you have to understand the origins.
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"><meta property="og:url" content="https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/"><meta property="og:site_name" content="Privacynerd's blog"><meta property="og:image" content="https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/cover.png"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="627"><meta property="article:published_time" content="2025-04-13 15:10:20 +0200 CEST"><style>#banner{width:100%;height:2rem;display:grid;grid-template-columns:1fr auto;background:var(--accent)}#banner span{display:flex;align-items:center;justify-content:center}#banner a{color:var(--background);display:inline}#banner>button{padding:0 5px 0 0;margin:0}</style><div id=banner><span><a href=https://git.privacynerd.de/git.privacynerd.de/blog.privacynerd.de>Construction site 🚧 | Work in progress</a></span></div></head><body><div class="container center"><header class=header><div class=header__inner><div class=header__logo><a href=/en><div class=logo>Privacynerd's blog</div></a></div><ul class="menu menu--mobile"><li class=menu__trigger>Menu&nbsp;▾</li><li><ul class=menu__dropdown><li><a href=/en/about>About</a></li><li><a href=/en/tags>Tags</a></li><hr><li><b><a href=/en/posts/2025/04/how-it-all-began/>English</a></b></li><li><a href=/de/posts/2025/04/how-it-all-began/>Deutsch</a></li></ul></li></ul><ul class="menu menu--desktop menu--language-selector"><li class=menu__trigger>en&nbsp;▾</li><li><ul class=menu__dropdown><li><b><a href=/en/posts/2025/04/how-it-all-began/>English</a></b></li><li><a href=/de/posts/2025/04/how-it-all-began/>Deutsch</a></li></ul></li></ul></div><nav class=navigation-menu><ul class="navigation-menu__inner menu--desktop"><li><a href=/en/about>About</a></li><li><a href=/en/tags>Tags</a></li></ul></nav></header><div class=content><article class=post><h1 class=post-title><a href=https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/>How everything began - or: the first post!</a></h1><div class=post-meta><time class=post-date>2025-04-13</time><span class=post-reading-time>11 minutes to read (1097 words)</span></div><img src=/en/posts/2025/04/how-it-all-began/cover.png class=post-cover alt="How everything began - or: the first post!" title="Cover Image"><div class=table-of-contents><h2>Table of Contents</h2><nav id=TableOfContents><ul><li><a href=#thinking>Initial considerations</a></li><li><a href=#beginnings>How it all began</a></li><li><a href=#covid-19>COVID-19</a></li><li><a href=#until-now>Until now&mldr;</a></li><li><a href=#planned-content>Planned content</a></li></ul></nav></div><div class=post-content><div><h2 id=thinking>Initial considerations<a href=#thinking class=hanchor arialabel=Anchor>#</a></h2><p>I&rsquo;ve been thinking about how to write this post for a long time. What needs to be told, what is unimportant? A lot has to be left out for the sake of clarity, and I might not even remember some of it. In any case, I would like to use this article to explain my intention in starting this blog. But to explain that, you have to understand the origins.</p><h2 id=beginnings>How it all began<a href=#beginnings class=hanchor arialabel=Anchor>#</a></h2><p>It all started when I was a 5th or 6th grade student (I can&rsquo;t remember exactly!) and started writing a batch script on a laptop for school. Yes, that&rsquo;s how it was, I admit - even if I don&rsquo;t know who or what drove me to do it. But I have a rough idea: I think it was a child&rsquo;s intrinsic motivation to find out how this computer in front of him works that made me do it.</p><p>Be that as it may, one of my “programs” looked something like this (yes, partially german):</p><div class=highlight><pre tabindex=0 class=chroma><code class=language-batch data-lang=batch><span class=line><span class=cl><span class=p>@</span><span class=k>echo</span> off
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=k>echo</span> Herzlich Wilkommen , bitte Passwort eingeben
</span></span><span class=line><span class=cl><span class=k>color</span> 7b
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>PSWD</span>
</span></span><span class=line><span class=cl><span class=k>set/p</span> <span class=nv>x</span><span class=p>=</span>
</span></span><span class=line><span class=cl><span class=k>if</span> &#39;&#39;<span class=nv>%x%</span>&#39;&#39;<span class=o>==</span>&#39;&#39;sehrsicher&#39;&#39; <span class=k>goto</span> <span class=nl>openfile</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=k>pause</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>false</span><span class=c1> </span>
</span></span><span class=line><span class=cl><span class=k>echo</span> Falsches Passwort , bitte erneut versuchen.
</span></span><span class=line><span class=cl><span class=k>color</span> 7c
</span></span><span class=line><span class=cl><span class=k>goto</span> <span class=nl>PWSD</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>openfile</span>
</span></span><span class=line><span class=cl><span class=k>echo</span> Passwort richtig , bitte &#39;Enter&#39; druecken!
</span></span><span class=line><span class=cl><span class=k>goto</span> <span class=nl>Video</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=k>pause</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>Video</span>
</span></span><span class=line><span class=cl><span class=k>echo</span> Wenn sie sich ein Video anschauen moechten , dann geben sie jetzt ,,Ja`` ein , wenn nicht dann einfach ,,Nein&#39;&#39;!
</span></span><span class=line><span class=cl><span class=k>color</span> 7b
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>PSWD</span>
</span></span><span class=line><span class=cl><span class=k>set/p</span> <span class=nv>x</span><span class=p>=</span>
</span></span><span class=line><span class=cl><span class=k>if</span> &#39;&#39;<span class=nv>%x%</span>&#39;&#39;<span class=o>==</span>&#39;&#39;Ja&#39;&#39; <span class=k>goto</span> <span class=nl>OpenVideo</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>false</span>
</span></span><span class=line><span class=cl><span class=k>goto</span> <span class=nl>exit</span>
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>OpenVideo</span><span class=c1> </span>
</span></span><span class=line><span class=cl><span class=k>start</span> C:\Users\<span class=p>&lt;</span>CENSORED<span class=p>&gt;</span>\<span class=p>&lt;</span>YES, REALLY<span class=p>&gt;</span>\
</span></span><span class=line><span class=cl>
</span></span><span class=line><span class=cl><span class=p>:</span><span class=nl>exit</span>
</span></span><span class=line><span class=cl><span class=k>exit</span>
</span></span></code></pre></div><p>Well, then my father gave me the book, a textbook on Python3<sup id=fnref:1><a href=#fn:1 class=footnote-ref role=doc-noteref>1</a></sup>, and there was no turning back. I think I read the entire textbook when I was 11 or 12 years old. Anyway, at some point I switched to Linux (initially <a href=https://linuxmint.com/>Linux Mint</a>) - then came COVID-19<sup id=fnref:2><a href=#fn:2 class=footnote-ref role=doc-noteref>2</a></sup>.</p><h2 id=covid-19>COVID-19<a href=#covid-19 class=hanchor arialabel=Anchor>#</a></h2><p>For students, COVID-19 and the associated homeschooling and isolation meant one thing above all: a lot of time. They used it in different ways. I used it to pursue my new hobby intensively. During this time, I learned new programming languages like Java (partly for Minecraft plugins, <a href=https://git.privacynerd.de/BlueFox/MC-Plugins>here</a> you can find some), and even taught myself some C and assembler.</p><p>During this time, I was given my first Raspberry Pi - with far-reaching consequences. Because it led to me turning more and more to the hardware side. While I had previously written web apps with a database in <a href=https://www.djangoproject.com/>Django</a> or <a href=https://flask.palletsprojects.com/en/stable/>Flask</a> and Python, I was now programming simple blinking circuits, then at some point scripts that read sensor data and displayed it on a small OLED display (0.96") or switched the lamps in my room on and off at the touch of a button (because a light switch is not enough!). During this time, I also discovered for myself a 3D printer that had been sitting around almost unused for a long time.</p><figure><img src=/en/posts/2025/04/how-it-all-began/esafep.jpg alt="Picture of the ESafeP - a wooden ”safe“ with its own software"><figcaption><p>The ”ESafeP“ - very stable!</p></figcaption></figure><p>Things got even more hardware-oriented with my first ESP32 - new ideas emerged and with them new projects. A self-built safe (super safe made of wood!) with my own <a href=https://git.privacynerd.de/BlueFox/ESafeP>software</a> was just as much a part of it as my own <a href=https://git.privacynerd.de/NetSpeaker/NetSpeaker>MP3 (and much more) player</a>. The 3D printer was also used time and again, as it is common in the DIY space - for example for the housing for my battery-powered <a href=https://git.privacynerd.de/BlueFox/losungepaper>ePaper showing the german ”Tageslosung“ - a verse from the bible for every day</a>.</p><figure><img src=/en/posts/2025/04/how-it-all-began/netspeaker.jpg alt="Image of a finished, self-made NetSpeaker in housing - which is (not) just MP3 player."><figcaption><p>A NetSpeaker</p></figcaption></figure><figure><img src=/en/posts/2025/04/how-it-all-began/losung-epaper.jpg alt="Image of the finished ePaper, which displays the current daily verse of the bibel (german ”Tageslosung“)"><figcaption><p>Losungs-ePaper (showing a biblical verse of the day)</p></figcaption></figure><p>All in all, the corona pandemic had opened up previously unimagined new spaces, at least for me, and also had its positive sides: During this time, I developed an interest in 3D printing, which could also be the subject of this blog.</p><h2 id=until-now>Until now&mldr;<a href=#until-now class=hanchor arialabel=Anchor>#</a></h2><p>Well, not much has changed since then. At some point, self-hosting got a thing for me, and I also got to know wood as an exciting material (as already mentioned above). It&rsquo;s so cool to see what you can host yourself: your own file synchronization service, your <a href=https://git.privacynerd.de/>own Github</a>, media servers, and so on. Initially, everything ran on the aforementioned Raspberry Pi. Later, however, access from outside the home network was required, and since then many services have been running on a rented server.</p><figure><img src=/en/posts/2025/04/how-it-all-began/gitea-a-self-hosted-github.png alt="Screenshot of my self-hosted instance of Gitea"><figcaption><p>A ”self-hosted Github“</p></figcaption></figure><p>Not so long ago, I had an idea: I was learning to etch circuit boards myself, and the information I was getting was mainly from other makers&rsquo; blogs. Thus, why not write about what you do? On the one hand, it could actually be that someone looking for it might find their way to the blog, but on the other hand, it&rsquo;s simply a useful way of documenting it, and maybe even something good for future job applications.</p><figure><img src=/en/posts/2025/04/how-it-all-began/etching-station.jpg alt="Picture of a setup for manually etching circuit boards; in the picture: a self-built UV exposure unit, an etching unit and a container with caustic soda solution"><figcaption><p>The etching setup</p></figcaption></figure><p>So, I sat down and looked for ways to create a blog. Of course, it had to be self-hosted, and maybe even a bit self-made. This led me to <a href=https://Line truncated
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