https://philippraven.com/blog/Recent content in Blogs on philippravenHugo -- gohugo.ioen-usSat, 17 Jan 2026 00:50:00 +0200https://philippraven.com/blog/esp/esp8266-wled-ambilight/Sat, 17 Jan 2026 00:50:00 +0200https://philippraven.com/blog/esp/esp8266-wled-ambilight/DIY ESP Ambilight This is a really amazing and surprisingly quick and easy project I think anyone could do. Our TV is right in front of a white wall and so I thought this is perfect for trying out an ambilight. This is something I wanted to do for a long time, but in the past this was always a rather complicated task and I didn’t really know what I even wanted or what could be done.https://philippraven.com/blog/esp/esp32-music-player-2/Sat, 31 May 2025 22:22:19 +0200https://philippraven.com/blog/esp/esp32-music-player-2/ESP32 music player - part 2 I used the player for a few hours now, but I noticed a big flaw in my design. Well design is a little far-fetched. I just put a few parts together and called it a music player. :D The first iteration In the first iteration I tried my headphones directly on the PCM5102 and they sounded amazing and loud enough for my taste. But something felt off using headphones directly on a DAC preamp.https://philippraven.com/blog/esp/esp32-music-player/Mon, 26 May 2025 20:47:00 +0200https://philippraven.com/blog/esp/esp32-music-player/ESPod - Shuffle instant music - free of distractions no boot time, no menus, no bullshit! ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ the front side with cute ghosts and the back side with a little, cute turtle Yes it’s true I built an ESP32 based music player that can play mp3, wav and flac! Well, flac is more a proof of concept, including stutters and lags. But the rest works exceptionally well! I was totally surprised by the music quality this ’little’ thing can deliver.https://philippraven.com/blog/projects/graffiti-bmw/Mon, 26 May 2025 08:47:00 +0200https://philippraven.com/blog/projects/graffiti-bmw/… coming soon …https://philippraven.com/blog/3d/minimalist-wallet/Sun, 16 Feb 2025 01:01:18 +0100https://philippraven.com/blog/3d/minimalist-wallet/3D printed Minimalist Wallet Version 1 Version 1 was our first try. We experimented with a screw design which ended up with several quirks: Limited Space: Not enough room for coins. Design Constraints: The width was dictated by the minimal screw length. Rubber Band Mechanism: A rubber band was clamped in and wrapped around the wallet, aiming to secure money bills. This early version was a stepping stone towards a better design.https://philippraven.com/blog/3d/printing/key-holder/Sun, 24 Nov 2024 00:00:00 +0000https://philippraven.com/blog/3d/printing/key-holder/For over a year, I used a key holder I found on Thingiverse, created by Protean Man (link here). While the design was functional and made my life a little easier, I had a few gripes with it right from the start. What Didn’t Work for Me The Logo: Protean Man’s logo is prominently displayed on the key holder, which always annoyed me. The Model: The STL file had quite a few unnecessary vertices, and the overall form felt strange and not as streamlined as I’d like.https://philippraven.com/blog/diy/air-purifier/Sun, 16 Jun 2024 22:09:38 +0200https://philippraven.com/blog/diy/air-purifier/This Monstrosity is a simple air filter box. It’s not a beauty, but it does its job very well. The 4 fans are powered by 5V and are very quiet. My room in the dormitory has an old carpet. Although I have already cleaned it for several hours with a wet vacuum cleaner, it is still extremely dusty in my room every day. In addition, I have many trees outside my window that I am allergic to.https://philippraven.com/blog/programming/raspberry-dsl-speed-tracker/Tue, 11 Jun 2024 20:38:19 +0200https://philippraven.com/blog/programming/raspberry-dsl-speed-tracker/In order to monitor the stability of the internet connection in our dormitory, I decided to create a Raspberry Pi-based speed tester. The internet service provider recommends using the Ookla speed test for this purpose. Since I had a few spare Raspberry Pis lying around, I utilized one of them for this project. The Python program for the speed test can be found in my GitHub repository https://github.com/GrafKnusprig/SpeedPlotBot The repository also includes a script for plotting the data and the necessary service and timer files for the systemd timer on the Raspberry Pi.https://philippraven.com/blog/projects/birdclef-2024/Sat, 08 Jun 2024 12:44:19 +0200https://philippraven.com/blog/projects/birdclef-2024/You can find the full paper to the project here: Download the paper The Challenge Kaggle’s BirdCLEF2024 competition challenges participants to identify bird species from audio recordings collected globally. Utilizing extensive datasets and advanced machine learning techniques, the goal is to enhance automated bird sound recognition. This competition not only aids in biodiversity monitoring but also supports conservation efforts by improving tools for ecologists and ornithologists. For more detailed information, check out the BirdCLEF 2024 competition page.https://philippraven.com/blog/3d/clothespin/Fri, 07 Jun 2024 22:41:25 +0200https://philippraven.com/blog/3d/clothespin/Currently I’m having a lot of fun designing clothespins with compliant mechanisms. It all started when I wanted to try FreeCAD and needed something to design. And somehow, the idea came to me. The first two were easy. They are inspired by Ikea clothespins. I made a regular version and a slim version. Both are currently 3D printed in PLA and in use, and they still work. You just have to be careful.https://philippraven.com/blog/3d/blender/monitor-stand/Tue, 04 Jun 2024 23:40:32 +0200https://philippraven.com/blog/3d/blender/monitor-stand/I wanted a vertical monitor But I only had an old ACER G236HL left, which neither has a Vesa mount nor an adjustable stand. Of course, I had to solve this problem with 3D printed parts. Building a complete monitor stand where the screen is placed like a tablet is too common. So, I needed something better. I took a closer look at the original stand and thought that I could easily reuse it.https://philippraven.com/blog/repairs/watch-hands-fix/Tue, 04 Jun 2024 00:27:04 +0200https://philippraven.com/blog/repairs/watch-hands-fix/Fixing Watch Hands I thought to myself today, “I’ll fix my watch.” It’s an old Casio AW-5 with module 1301. I’ve had this watch since I was a child and recently found it in a box with my old stuff. Over the years and with use, the hands have gotten slightly misaligned. The hour and minute hands no longer meet at 12 o’clock, but somewhere else. It didn’t look nice. I thought there wasn’t much to lose with this old watch, so I decided to quickly repair it myself.https://philippraven.com/blog/programming/purge-wizard/Tue, 25 Jul 2023 13:19:20 +0200https://philippraven.com/blog/programming/purge-wizard/A friend of mine … … needed a program that can do repetitive file deletion tasks for him. First, I started with a batch script. This way is fast, easy and the file size is small. The small script simply gets 2 textfiles as an input. One textfile, which contains the path to the folder, where you want do do your deletion task, and another file which contains a list of the filenames you want to delete.https://philippraven.com/blog/art/salt-water-etching/Mon, 01 May 2023 12:04:45 +0200https://philippraven.com/blog/art/salt-water-etching/I had an idea I wanted to etch my own emblems, text and symbols on various things, especially knives. The first method you think of is taking the dremel and just go for it. But for more complex images, this process is hard and tedious. I was looking for an easier method. More controlable and planable. By chance I came across the salt etching process in a Youtube video. I did not know until then that such a thing exists.https://philippraven.com/blog/3d/blender/halo-recon-helmet/Wed, 19 Apr 2023 10:34:38 +0200https://philippraven.com/blog/3d/blender/halo-recon-helmet/That one time I modelled my own head … ..was creepy. It all started with me getting into cosplay. Cosplay was always the thing I did know existed, but wasn’t really sure what to think of it. Until I got invited to a convention. I’ve gone all out and built a whole plate armor for my girlfriend. She cosplayed Erza from fairy tail. I made it all from EVA foam, Arylic paint and Latex.