Hobby DJ 🎧 · Electronics tinkerer 🔌 · Builder of small, useful software tools 🛠️
Auf Deutsch: Hobby-DJ, Elektronik-Bastler und Entwickler kleiner, nützlicher Software-Tools. Alles kostenlos und Open Source.
🌐 All my tools on one page / Alle Tools auf einer Seite: elospeed.github.io
I build the tools I miss myself: for the DJ booth and for the workbench. Everything here is free, open source and runs on plain Windows without a complicated setup.
| Category | Projects |
|---|---|
| 🎧 DJ & Audio | StemMaker · StemTagger · StemPacker |
| 🔌 Electronics | LedPreResistor |
Turn your own tracks into Traktor stem files.
StemMaker converts MP3, WAV, FLAC and more into .stem.mp4 files with four separate parts: drums, bass, melody and vocals. Load them in Traktor or Mixxx 2.6 (beta) and mix each part on its own.
- One small native Windows program, no Python, no setup
- Turbo engine since 2.0: 6 to 10 times faster on the CPU, uses your graphics card when it helps (NVIDIA, AMD, Intel)
- Batch conversion of whole folders, resumes where it stopped
- Built-in StemPlayer to listen to each stem before the gig
- Includes StemTagger to set title, artist and cover of your stem files
- New in 2.2: nine languages (English, German, Spanish, French, Portuguese, Italian, Japanese, Dutch, Polish)
- Optional club level and bass fix for punchy, consistent stems
▶ Watch StemMaker in 73 seconds on YouTube
Edit tags and cover art without breaking your stems.
Sets title, artist, album, genre and cover art in Traktor stem files (.stem.mp4) and MP3s, for a whole folder at once. Only the tags are rewritten: the stems, the audio and Traktor's cue points, loops and beatgrid stay untouched. Portable ZIP, also included in StemMaker.
Pack finished tracks into Traktor stem files, without AI.
A master plus up to four stems per song, for example from your DAW, a 5.1 DVD or another separation tool, packed in batches into .stem.mp4. Your own stem names and colours, tags and cover from the master, AAC or lossless ALAC.
Find the right series resistor for your LED. A free LED series resistor calculator for Windows: enter supply voltage, LED colour and current, and it picks the matching standard resistor and explains every step of the calculation with your own values.
- Standard values from the E12, E24 and E96 series, with colour bands
- Power dissipation and load check of the resistor
- Step-by-step explanation of the calculation, great for learning
- LED info and a live LED preview in the selected colour
If one of my tools saves you time, I'm happy about a coffee. It helps keep everything free.
