Timbrica Online Tools — Page 9

English Learning Tools

Gap-Fill Generator
Turn any text into a fill-in-the-blanks exercise. Choose how words are removed, do it on screen or print a worksheet with an answer key. Free, in the browser.
English Phrasal Verbs
A searchable list of 100+ English phrasal verbs with meanings and examples, filterable by particle and CEFR level, plus a fill-in trainer. Free, in the browser.
English Irregular Verbs
A searchable table of 130+ English irregular verbs grouped by pattern, plus a typing trainer for the past simple and past participle. Free, in the browser.
Shadowing Studio
Loop and slow down any audio or video, record yourself shadowing it, and compare your waveform and pitch side by side. Free, in the browser.
English Level Converter
Convert any English score between CEFR, IELTS, TOEFL, Cambridge and Duolingo, and calculate your IELTS overall band. Free, in the browser.
English Collocations
Look up an English word and see its natural collocations — the verbs and adjectives that go with it — grouped by pattern with examples. Free, in the browser.
IELTS Speaking Timer
Practise IELTS Speaking with a Part 2 cue-card timer (1 minute prep, 2 minute talk), random cue cards and Part 1 & 3 question banks. Free, in the browser.
English Vowel Trainer
Say an English vowel and see it plotted on a formant chart against native targets. Real-time F1/F2 feedback for clearer pronunciation. Free, in the browser.
English False Friends
Browse and quiz English false friends — words that look like a word in your language but mean something different. Russian, German, Spanish, French, Portuguese. Free.
Syllable Counter
Count the syllables in any English word or text. Dictionary-accurate, with a poetry mode for haiku. Free, in your browser.

Robotics Tools

Robot ID Registry
Register any robot and get a free unique Timbrica Robot ID (TRID), a public passport page and a lifecycle logbook. Free, open registry.
Gear Ratio Calculator
Calculate gear ratio, output RPM and torque for multi-stage gear trains. Robotics, RC, mechanisms. Free.
Cobot Safety Distance Calculator
Calculate ISO 13855 minimum protective separation distance for collaborative robots. Enter K, Tr, Ts, and C to get S instantly. Free.
PID Tuning Simulator
Tune PID controller gains interactively. Step-response plot, live metrics, Ziegler–Nichols auto-tune, presets. Free.
Line-Follower Track Generator
Generate printable line-follower and micromouse tracks for robotics competitions. Random loop, maze, figure-8. Export to print. Free.
LiPo Battery Calculator
Calculate LiPo pack voltage, energy, max discharge current and flight runtime for drones, RC cars and robots. Free.
Quaternion & Rotation Converter
Convert quaternions, Euler angles, axis-angle and rotation matrices online. All Euler orders, intrinsic/extrinsic, gimbal-lock handling. Free.
Robot Speed & Odometry Calculator
Calculate wheeled robot linear speed, odometry ticks/m and distance/tick from wheel diameter, RPM, gear ratio and encoder CPR. Free.
Servo Torque Calculator
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.
Stepper Motor Calculator
Calculate steps/mm, microstepping, and step frequency for 3D printers, CNC machines, and robotics. Belt, leadscrew, and rotary modes. Free.
Robot Vacuum Error Codes
Look up error codes for Roomba, Roborock, Ecovacs, Dreame, Xiaomi, Eufy, Shark, Neato, Narwal & Roidmi robot vacuums. Cause and fix steps. Free.
Serial Monitor
Browser-based serial monitor for Arduino, ESP32, and microcontrollers. Live console, telemetry plotter, TX/RX. Free.
URDF Viewer
Open and inspect URDF robot description files in 3D. Parse links, joints, STL meshes and articulate the kinematic chain. Free.
Forward Kinematics Visualizer
Interactive DH-parameter robot arm visualizer. Chain joints, move sliders, see the end-effector pose live in 3D. Free.