Tools

A list of little JavaScript tools I made or collected.

  • Password Generator
    An offline password generator with an easy to remember algorithm
  • Resistor Colors
    A tool to help reading resistor values from color rings
  • BjSChords
    A tool to get note locations on a guitar and chords for chords for scales
  • BjSSheets v2
    A tool to create guitar sheets for printing (e.g. from ultimate-uirat.com)
  • Image Splitter
    A tool to split a wide image into multible square parts
  • Points Leveler
    A tool to calculate winner places from a weighted table of stations and points
  • Calc Creator 10x10
    A tool to find equations which have a specific result using numbers 1 to 10 in from a ∙ b ± c ∙ d = result
  • BjSPeriode
    Calculate the periode notatin for a given fraction
  • Mittelwerte
    Eine Liste mit verschiedenen Methoden zur Mittelwert-Bestimmung mit einer zufälligen Liste an Zahlen as Beispiel (German)
  • Nullstellen
    Ein Tool zum Finden aller Extremstellen einer quadratischen Funtion beliebigen Gerades mit p-q-Formel, Horner Schema oder binärer Suche während alle Schritte ausführlich ausgegeben werden (German)
  • Quadratische Funktionen
    Ein Tool, um quadratisch Funktionen 2. Grades zwischen Normal-, Produkt- und Scheitelpunkt-Form umzuwandeln (German)
  • Circle Cut
    A graphic representation of what happens if you remove a specific length out of each perimeter of a filled circle for r in {0..1}
  • Ameisen-Spiel
    Ein mathematisches Spiel zum Trainieren der 3D-Vorstellungskraft, indem man den Weg einer Amaise auf einem Würfel im Kopf abgeht (German)
  • Bottle Game
    A game where you have pour liquids of different colors between different vessels to create only mono-colored ones
  • Base64 Converter
    A tool to convert text from and to Base64 encoding
  • Binary converter
    A tool to convert text from and to binary encoding
  • Regex Tester
    A tool to on-the-fly test JevaScript regular expressions
  • RTTTL 2 Arduino converter
    A tool to convert Nokia ring tones (format: Ring Tone Text Transfer Language) to Arunino compatible tone() arrays; demo play with rtttl-play, example:
    Entertainer:d=4,o=5,b=140:8d,8d#,8e,c6,8e,c6,8e,2c.6,8c6,8d6,8d#6,8e6,8c6,8d6,e6,8b,d6,2c6,p,8d,8d#,8e,c6,8e,c6,8e,2c.6,8p,8a,8g,8f#,8a,8c6,e6,8d6,8c6,8a,2d6
  • BjSMatrix Editor
    An editor for my 5x5 LED display to create Arduino code for it
  • BjSMatrix Editor v2.0
    An editor for variable LED displays to create Arduino code for it
  • BjSMatrixRotater
    An editor to rotate or mirror matrix animations, adjusting them to different displays and orientations

This page was last edited on 2025-06-21 16:30

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This page was last edited on 2025-06-21 16:30

Bjørn Singer
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