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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’ve been around the (electronics) DIY scene for a while, at some point you can’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.
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"><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 ▾</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 ▾</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’ve been around the (electronics) DIY scene for a while, at some point you can’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’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
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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’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…</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>…and the results</p></figcaption></figure><p>So: The exposure time for successful results is between 40 and 45 minutes. Admittedly, that’s quite a long time, but it’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’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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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’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…</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>…and the results</p></figcaption></figure><p>So: The exposure time for successful results is between 40 and 45 minutes. Admittedly, that’s quite a long time, but it’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’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/2025/11/nostalgic_memories/ class="button inline prev">< [<span class=button__text>Between Homeschooling And Web Design - nostalgic memories of seventh grade</span>]
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<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’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 ▾</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 ▾</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…</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’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’t remember exactly!) and started writing a batch script on a laptop for school. Yes, that’s how it was, I admit - even if I don’t know who or what drove me to do it. But I have a rough idea: I think it was a child’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
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</span></span><span class=line><span class=cl>
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</span></span><span class=line><span class=cl><span class=k>echo</span> Herzlich Wilkommen , bitte Passwort eingeben
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"><meta property="og:url" content="https://blog.privacynerd.de/en/posts/2025/11/nostalgic_memories/"><meta property="og:site_name" content="Privacynerd's blog"><meta property="og:image" content="https://blog.privacynerd.de/en/posts/2025/11/nostalgic_memories/cover.png"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="627"><meta property="article:published_time" content="2025-11-03 17:55:26 +0100 CET"><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 ▾</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/2025/11/nostalgic_memories/>English</a></b></li><li><a href=/de/posts/2025/11/nostalgic_memories/>Deutsch</a></li></ul></li></ul><ul class="menu menu--desktop menu--language-selector"><li class=menu__trigger>en ▾</li><li><ul class=menu__dropdown><li><b><a href=/en/posts/2025/11/nostalgic_memories/>English</a></b></li><li><a href=/de/posts/2025/11/nostalgic_memories/>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/2025/11/nostalgic_memories/>Between Homeschooling And Web Design - nostalgic memories of seventh grade</a></h1><div class=post-meta><time class=post-date>2025-11-03</time><span class=post-reading-time>5 minutes to read (527 words)</span></div><img src=/en/posts/2025/11/nostalgic_memories/cover.png class=post-cover alt="Between Homeschooling And Web Design - nostalgic memories of seventh grade" title="Cover Image"><div class=table-of-contents><h2>Table of Contents</h2><nav id=TableOfContents><ul><li><a href=#times-are-changing>Times are changing</a></li><li><a href=#the-project>The Project</a></li><li><a href=#why-all-this>Why all this?</a></li><li><a href=#the-result>The result</a></li></ul></nav></div><div class=post-content><div><h2 id=times-are-changing>Times are changing<a href=#times-are-changing class=hanchor arialabel=Anchor>#</a></h2><p>No one really knows one way or the other—it’s an unprecedented situation. And yet, somehow, we have to deal with it. A virus is spreading, and suddenly the whole world is barricading itself behind windows and front doors. Clearly, we are talking about the coronavirus pandemic and the accompanying lockdown. Schools were also closed for a long time during this period, with homeschooling replacing face-to-face teaching. For some, the internet was still uncharted territory, while for others, this new reality created unexpected opportunities (including in terms of time). I was one of them - at the time in seventh grade at a Bavarian high school.</p><h2 id=the-project>The Project<a href=#the-project class=hanchor arialabel=Anchor>#</a></h2><p>In the subject NuT, which combines physics and computer science, there was an extensive assignment: after studying graphs and the Internet as a huge network that can be represented as graphs, it was time to put theory into practice. The goal: to build a website using HTML (and CSS) in order to better understand how the World Wide Web (WWW) works as a whole—the name was quite telling: “<strong>Project WWW</strong>.”</p><p>“Great! Finally, I get to do something at school that I’m really interested in anyway,” or something like that, I thought at the time. In any case, I immediately got to work with a classmate (I don’t remember exactly how immediately), we thought about the structure, wrote poems, collected pictures, and looked up definitions. I was mainly responsible for the technical stuff, while he was more responsible for the content and supervision.</p><h2 id=why-all-this>Why all this?<a href=#why-all-this class=hanchor arialabel=Anchor>#</a></h2><p>Anyone who has read this far may be asking themselves this question. Well, first of all, it’s autumn holidays, which means it’s time to take my mind off things for a bit (for example, finally studying a little for a potential amateur radio exam) and reminisce. That’s how I found the project in the depths of my computer’s file system - and was once again amazed at what we had achieved back then and thought to myself that I could upload it toLine truncated
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<!doctype html><html lang=en><head><title>Posts :: Privacynerd's blog</title><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content><meta name=keywords content><meta name=robots content="noodp"><link rel=canonical href=https://blog.privacynerd.de/en/posts/><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="website"><meta property="og:title" content="Posts"><meta property="og:description" content><meta property="og:url" content="https://blog.privacynerd.de/en/posts/"><meta property="og:site_name" content="Privacynerd's blog"><meta property="og:image" content="https://blog.privacynerd.de/og-image.png"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="627"><link href=/en/posts/index.xml rel=alternate type=application/rss+xml title="Privacynerd's blog"><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 ▾</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/>English</a></b></li><li><a href=/de/posts/>Deutsch</a></li></ul></li></ul><ul class="menu menu--desktop menu--language-selector"><li class=menu__trigger>en ▾</li><li><ul class=menu__dropdown><li><b><a href=/en/posts/>English</a></b></li><li><a href=/de/posts/>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><div class=posts><article class="post on-list"><h2 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></h2><div class=post-meta><time class=post-date>2025-04-14</time></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=post-content><p>If you’ve been around the (electronics) DIY scene for a while, at some point you can’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 desigLine truncated
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<!doctype html><html lang=en><head><title>Posts :: Privacynerd's blog</title><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content><meta name=keywords content><meta name=robots content="noodp"><link rel=canonical href=https://blog.privacynerd.de/en/posts/><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.c90e47ca794a3e0d427da049e74434d1a06b439b22f1997b3bd74b740b5e0b5c.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="website"><meta property="og:title" content="Posts"><meta property="og:description" content><meta property="og:url" content="https://blog.privacynerd.de/en/posts/"><meta property="og:site_name" content="Privacynerd's blog"><meta property="og:image" content="https://blog.privacynerd.de/og-image.png"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="627"><link href=/en/posts/index.xml rel=alternate type=application/rss+xml title="Privacynerd's blog"><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 ▾</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/>English</a></b></li><li><a href=/de/posts/>Deutsch</a></li></ul></li></ul><ul class="menu menu--desktop menu--language-selector"><li class=menu__trigger>en ▾</li><li><ul class=menu__dropdown><li><b><a href=/en/posts/>English</a></b></li><li><a href=/de/posts/>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><div class=posts><article class="post on-list"><h2 class=post-title><a href=https://blog.privacynerd.de/en/posts/2025/11/nostalgic_memories/>Between Homeschooling And Web Design - nostalgic memories of seventh grade</a></h2><div class=post-meta><time class=post-date>2025-11-03</time></div><img src=/en/posts/2025/11/nostalgic_memories/cover.png class=post-cover alt="Between Homeschooling And Web Design - nostalgic memories of seventh grade" title="Cover Image"><div class=post-content><h2 id=times-are-changing>Times are changing</h2><p>No one really knows one way or the other—it’s an unprecedented situation. And yet, somehow, we have to deal with it. A virus is spreading, and suddenly the wholLine truncated
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@@ -1,2 +1,3 @@
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<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Posts on Privacynerd's blog</title><link>https://blog.privacynerd.de/en/posts/</link><description>Recent content in Posts on Privacynerd's blog</description><generator>Hugo</generator><language>en</language><lastBuildDate>Mon, 14 Apr 2025 08:11:20 +0200</lastBuildDate><atom:link href="https://blog.privacynerd.de/en/posts/index.xml" rel="self" type="application/rss+xml"/><item><title>Self-built UV exposure unit (LED)</title><link>https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/</link><pubDate>Mon, 14 Apr 2025 08:11:20 +0200</pubDate><guid>https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/</guid><description><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></description></item><item><title>How everything began - or: the first post!</title><link>https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/</link><pubDate>Sun, 13 Apr 2025 15:10:20 +0200</pubDate><guid>https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/</guid><description><h2 id="thinking">Initial considerations</h2>
|
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<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Posts on Privacynerd's blog</title><link>https://blog.privacynerd.de/en/posts/</link><description>Recent content in Posts on Privacynerd's blog</description><generator>Hugo</generator><language>en</language><lastBuildDate>Mon, 03 Nov 2025 17:55:26 +0100</lastBuildDate><atom:link href="https://blog.privacynerd.de/en/posts/index.xml" rel="self" type="application/rss+xml"/><item><title>Between Homeschooling And Web Design - nostalgic memories of seventh grade</title><link>https://blog.privacynerd.de/en/posts/2025/11/nostalgic_memories/</link><pubDate>Mon, 03 Nov 2025 17:55:26 +0100</pubDate><guid>https://blog.privacynerd.de/en/posts/2025/11/nostalgic_memories/</guid><description><h2 id="times-are-changing">Times are changing</h2>
|
||||
<p>No one really knows one way or the other—it&rsquo;s an unprecedented situation. And yet, somehow, we have to deal with it. A virus is spreading, and suddenly the whole world is barricading itself behind windows and front doors. Clearly, we are talking about the coronavirus pandemic and the accompanying lockdown. Schools were also closed for a long time during this period, with homeschooling replacing face-to-face teaching. For some, the internet was still uncharted territory, while for others, this new reality created unexpected opportunities (including in terms of time). I was one of them - at the time in seventh grade at a Bavarian high school.</p></description></item><item><title>Self-built UV exposure unit (LED)</title><link>https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/</link><pubDate>Mon, 14 Apr 2025 08:11:20 +0200</pubDate><guid>https://blog.privacynerd.de/en/posts/2025/04/diy-uv-pcb-exposure-unit/</guid><description><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></description></item><item><title>How everything began - or: the first post!</title><link>https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/</link><pubDate>Sun, 13 Apr 2025 15:10:20 +0200</pubDate><guid>https://blog.privacynerd.de/en/posts/2025/04/how-it-all-began/</guid><description><h2 id="thinking">Initial considerations</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></description></item></channel></rss>
|
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Reference in new issue
Block a user