An eight-project Arduino simulator! Every project includes real Arduino code, a live circuit diagram, and a Serial Monitor at the bottom. 💡 LED Blink — The "Hello World" of hardware. A 220Ω resistor and LED circuit, digitalWrite(13, HIGH/LOW) code, and a PWM timing diagram all run simultaneously. 🔘 Button & LED — A live visualisation of INPUT_PULLUP. Click the button to light the LED, and see the inverted logic (LOW = pressed) explained in context. 🌓 PWM Fade — Controls LED brightness with analogWrite(9, 0–255). The PWM waveform and duty cycle update in real time as the LED breathes. 🌡️ Analog Sensor — Turn the potentiometer dial to read ADC values from 0 to 1023, then watch map() rescale them to the PWM range (0–255). Includes a voltage divider explanation. ⚙️ Servo Motor — Control the servo with an angle slider. The relationship between PWM pulse width (0.5ms – 2.5ms) and output angle is visualised live. 🎨 RGB LED — Mix any colour with the R, G, and B sliders. Press AUTO for an automatic rainbow cycle. A colour wheel is shown alongside. 📡 Ultrasonic Sensor — Shows how the HC-SR04 works with a TRIG/ECHO timing diagram. Verify the formula cm = round-trip time (µs) / 58 directly. 🚦 Traffic Light — Demonstrates a Finite State Machine (FSM). The RED → RED+YELLOW → GREEN → YELLOW cycle runs alongside a live state-transition diagram.

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개발자용 네이밍 케이스 8종 camelCase · PascalCase · snake_case · SCREAMING_SNAKE · kebab-case · UPPER-KEBAB · dot.case · path/case 특수 변환 13종 전각/반각 · 스몰 캡스 · 위/아래 첨자 · 취소선 · 밑줄 · 버블 텍스트 · 사각 텍스트 · 모스 부호 · 이진수(ASCII) · ROT13 추가 도구 • 텍스트 정리: 공백 제거, 빈 줄 제거, 중복 줄 제거, 줄 정렬, 줄 번호 추가/제거, 텍스트 뒤집기, 섞기 • 찾아 바꾸기: 정규식 지원, 대소문자 구분, 자주 쓰는 패턴 퀵버튼

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✅ 피커: RGB 슬라이더 + HEX 직접 입력 + HSL 변환 표시 ✅ 팔레트 생성: 보색·유사색·3색·4색·모노크롬·랜덤 자동 생성 ✅ 팔레트 뷰어: 큰 스트립 + 개별 카드 (클릭 복사) ✅ 색상 정보: HEX / RGB / HSL / HSB / CMYK 동시 표시 ✅ 저장: localStorage 팔레트 북마크 ✅ 내보내기: CSS 변수 / Tailwind config / JSON