Tembrica Online Tools — Page 11

Calculate gear ratio, output RPM and torque for multi-stage gear trains. Robotics, RC, mechanisms. Free.

Convert quaternions, Euler angles, axis-angle and rotation matrices online. All Euler orders, intrinsic/extrinsic, gimbal-lock handling. Free.

Calculate wheeled robot linear speed, odometry ticks/m and distance/tick from wheel diameter, RPM, gear ratio and encoder CPR. Free.

Generate printable line-follower and micromouse tracks for robotics competitions. Random loop, maze, figure-8. Export to print. Free.

Calculate the required holding torque for a robot arm servo. Enter payload, lever length and safety factor — get kg·cm, oz·in and N·m instantly. Free.

Calculate steps/mm, microstepping, and step frequency for 3D printers, CNC machines, and robotics. Belt, leadscrew, and rotary modes. Free.

Look up error codes for Roomba, Roborock, Ecovacs, Dreame, Xiaomi, Eufy, Shark, Neato, Narwal & Roidmi robot vacuums. Cause and fix steps. Free.

Browser-based serial monitor for Arduino, ESP32, and microcontrollers. Live console, telemetry plotter, TX/RX. Free.

Open and inspect URDF robot description files in 3D. Parse links, joints, STL meshes and articulate the kinematic chain. Free.

Interactive DH-parameter robot arm visualizer. Chain joints, move sliders, see the end-effector pose live in 3D. Free.

Test PS5 DualSense controller in your browser via Web HID — sticks, analog triggers, buttons, touchpad, drift detection. Free.

Test Xbox controller in your browser — sticks, triggers, buttons, dual-rumble vibration. Free Gamepad API diagnostic.

Test your network and browser for xCloud, GeForce Now, PS Remote Play, Steam Link, Luna. Latency, bandwidth and codec check.

Test Nintendo Joy-Con stick drift, buttons, gyroscope and accelerometer in your browser via Web HID. No download. Free.

Test Steam Deck sticks, triggers, buttons and gyroscope in your browser via the Gamepad and DeviceOrientation APIs. Free.

Find dead pixels and check color uniformity on the Steam Deck 7" 1280×800 screen. 8 fullscreen patterns, gamepad navigable.

Test what the PS5 hidden browser supports — codecs, WebGL, WASM, Web HID and more. Free in-browser report from Tembrica.

Test what the Xbox Series Edge browser supports — codecs, WebGL, WASM, Gamepad and more. Free in-browser report.

Test Steam Deck browser features: GPU, RAM, codecs, WebGPU, Web HID, gamepad and FPS benchmark. Free in-browser report.

Find the qibla direction from your location. Live mobile compass, exact bearing to the Kaaba, and distance to Mecca. Free and accurate.

Free digital tasbih counter with preset dhikrs (SubhanAllah, Alhamdulillah, Allahu Akbar), custom targets, vibration and progress tracking.

Convert Gregorian dates to Hijri and back. Today's Islamic date, monthly Hijri calendar, and highlighted Muslim holidays. Free.

Accurate prayer times for any city: Fajr, Dhuhr, Asr, Maghrib, Isha, Sunrise. Multiple calculation methods, Hanafi/Shafi Asr, live countdown. Free.

Calculate your zakat al-mal online: cash, gold, silver, investments, business assets. Nisab in any currency. Free and accurate.

How many prayers have you missed? Qaza calculator with a per-prayer breakdown (Fajr, Dhuhr, Asr…) and a make-up tracker. Madhhab-aware. Free.

Free Orthodox prayer rope counter for the Jesus Prayer: presets of 33, 50, 100 and 500 knots, cycle counts, today and all-time totals. Works offline.

Orthodox memorial days calculator: the 3rd, 9th and 40th day, half-year and anniversary from the date of death, plus parental Saturdays and Radonitsa.

Light a virtual memorial candle online — add a name, dates, photo and words of remembrance. Candle, dua or quiet light. Free, in your browser.

Real-time positions of the Sun, Moon, planets and constellations. Milky Way band, meteors, satellites — auto-updates every 5 minutes. Free.

Build silly faces in your browser. Mix doodle eyes, noses, mouths, hats and roll the dice for random combinations. Print, save, share. Free.

A free falling-sand game in your browser. Drop sand, pour water, light fires and watch 14 elements react in a live physics sandbox.

Online tarot with the Rider-Waite-Smith deck: 6 spreads, upright and reversed meanings, voice reading and a journal. Free.

Pop endless virtual bubble wrap online for a quick, satisfying stress break. Realistic pop sound, calm mode, themes, and a pop counter. Free.

Click one button and watch a single live world counter tick upward together. Back your country in the daily click battle. Free, in your browser.

A playful lie detector game: a prank truth/lie scanner, a voice nervousness meter and party questions. Not a real test — just for fun. Free.

Send a named star to the shared sky. For hope, gratitude or in memory of someone. Your wish stays — forever, in its own coordinates.

Online spectrogram for bioacoustics: bird songs, bat echolocation, whale calls. Measure, annotate, filter, export. Free, in browser.

Free browser-based DNA/RNA analysis: reverse complement, 6-frame translation, ORF finder, restriction sites, primer checks, codon usage.

Browser-based cell counter. Auto-detect cells in microscopy images, count colonies, measure area, analyze fluorescence. Free.

Free gel electrophoresis analyzer. Auto lane & band detection, molecular weight from 20+ built-in ladders, densitometry, CSV export.

Decode and inspect JSON Web Tokens in the browser. Header, payload, expiry, claims explained. No signing. Free.

Calculate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 hashes for text or files in your browser. HMAC, hex or base64.

Generate UUID v4 (random), v7 (time-ordered), v1 (timestamp) or Nil UUIDs in your browser. Bulk, formatted, validated. Free.

Encode and decode URL strings in the browser. Component vs full-URL mode, + for space, auto-detect. Free.

Encode and decode Base64 in the browser. UTF-8 safe, URL-safe variant, file uploads. Auto-detect direction. Free.

Test JavaScript regular expressions in the browser. Highlight matches, see groups, preview replacement. Free.

Identify the algorithm behind any hash: MD5, SHA-256, bcrypt, Argon2, NTLM and 50+ more. Ranked matches with hashcat & John modes. Free.

Convert Russian (Cyrillic) names and text to Latin in 9 standards: passport, GOST, ICAO, BGN/PCGN. Compare, reverse, export to PDF. Free.

Automatically add stress (accent) marks to Russian text, choose the right stress for homographs, and restore the letter ё. Free, in your browser.

Look up the feminine form of any profession in 6 languages — Russian, German, French, Spanish, Portuguese, Arabic — with honest usage tags. Free.