# EverrCAD — All-in-One Engineering Design Platform

> EverrCAD (https://everrcad.com) is a browser-based engineering platform combining 2D CAD drawing, automatic SLD (Single Line Diagram) design, live circuit simulation, interactive engineering education, and signal processing simulation in one unified tool. No installation required. Works on any device with a modern browser.

---

## What is EverrCAD?

EverrCAD is a professional-grade, web-based engineering design and learning platform. It is designed for electrical engineers, mechanical engineers, architects, students, educators, and hobbyists who need powerful design, simulation, and learning tools without expensive desktop software or complex installations.

EverrCAD runs entirely in the web browser. Users can create professional 2D technical drawings, automatically generate electrical Single Line Diagrams, simulate electrical circuits in real-time, learn engineering concepts through interactive 3D lessons, and write signal processing scripts — all from one platform.

### Key Value Propositions
- **Browser-based**: No downloads, no installation. Works on Windows, macOS, Linux, ChromeOS, and tablets.
- **All-in-one**: Replaces the need for separate CAD software, circuit simulation tools, programming environments, and learning platforms.
- **Affordable**: 95% cheaper than traditional alternatives like AutoCAD.
- **Free daily usage**: 2 hours free per day with access to ALL features — no credit card required.
- **Professional grade**: Tools that meet professional engineering standards for real-world projects.

---

## The 5 Modes of EverrCAD

### 1. SLD Mode (Single Line Diagram Designer)
**Purpose**: Automated electrical Single Line Diagram generation.

Features:
- Automatic SLD generation with intelligent component placement
- IEC-standard electrical symbols
- Extensive electrical component library (transformers, circuit breakers, switches, busbars, generators, motors, etc.)
- Multi-format export: PDF and SVG
- Code compliance checking
- Drag-and-drop interface
- Automatic wire routing

**Use cases**: Power distribution design, electrical panel layouts, substation diagrams, building electrical systems.

### 2. 2D CAD Mode (Technical Drawing)
**Purpose**: Professional 2D computer-aided design and technical drawing.

Features:
- Drawing tools: Lines, circles, arcs, rectangles, splines, polygons, polylines
- Advanced snapping: Endpoints, midpoints, centers, intersections, perpendicular, tangent
- Ortho mode for precise horizontal/vertical drawing
- Dimensioning tools: Linear, radial, angular, aligned
- Text and annotation tools
- Layer management and organization
- Block libraries for reusable components
- Grid and construction lines
- PDF export for documentation

**Use cases**: Technical drawings, mechanical parts, floor plans, architectural layouts, engineering diagrams.

### 3. Circuit Simulation Mode
**Purpose**: Real-time electrical circuit design and simulation.

Features:
- Interactive circuit building with drag-and-drop components
- Real-time AC and DC analysis
- Voltage, current, and power flow visualization
- Animated electron flow and AC sine waves
- Component library: Resistors, capacitors, inductors, transformers, diodes, LEDs, voltage/current sources
- Interactive component value adjustment
- Transient analysis

**Use cases**: Circuit design, circuit prototyping, electronics education, circuit theory learning.

### 4. Learn Mode (Interactive Engineering Education)
**Purpose**: Interactive 3D engineering education and learning.

Features:
- Three engineering branches: Electrical, Mechanical, Electronics Engineering
- Full 4-year curriculum (Year 1 through Year 4)
- Interactive 3D visualizations and animations
- Step-by-step explanations of complex engineering concepts
- Hands-on simulations (Maxwell's equations, 3-phase power systems, EV motors, digital filters, power electronics, etc.)
- Real-world applications and case studies

**Topics covered include**:
- Electrical Engineering: Circuit Theory, Electromagnetic Fields, Power Systems Analysis (stability, load flow, fault analysis), Power Electronics, Electrical Machines
- Mechanical Engineering: Thermodynamics, Fluid Mechanics, Machine Design
- Electronics Engineering: Digital Electronics, Analog Electronics, Signal Processing, Communication Systems, Microprocessors (Intel 8085), Microcontrollers

**Use cases**: Engineering education, self-study, university coursework, exam preparation, concept visualization.

### 5. SimLAB Mode (Simulation Laboratory)
**Purpose**: Signal processing and wireless communication simulation with programming.

Features:
- FLO programming language (Python-like syntax optimized for simulations)
- Full Python support via Pyodide (NumPy, SciPy, Matplotlib) running client-side in the browser
- Signal processing tools: FFT, spectrograms, MFCC extraction
- Audio file import and processing (MP3, WAV)
- Wireless communication system building
- Data import: CSV, Excel, JSON
- Interactive visualization with real-time plots
- Block-based simulation system (SimBlocks) similar to MATLAB/Simulink
  - Solver engine with RK45, BDF, RADAU algorithms
  - Hybrid continuous-time and discrete-time simulation
  - Zero-crossing detection
  - 70+ pre-built blocks

**Use cases**: Signal processing research, wireless communication prototyping, audio analysis, education, MATLAB/Simulink alternative.

---

## Pricing

### Free Tier
- **Cost**: Free (no credit card required)
- **Access**: 2 hours per day
- **Features**: ALL features available — no feature restrictions
- **Purpose**: Try everything before committing

### Monthly Subscription
- **Cost**: ₹520/month (approximately $6.25 USD/month)
- **Annual cost**: ₹6,240/year (approximately $75 USD/year)
- **Access**: Unlimited usage
- **Features**: All features, all modes
- **Cancellation**: Cancel anytime, no long-term contracts

### Comparison with Traditional Software
| Feature | EverrCAD | AutoCAD | MATLAB/Simulink |
|---------|----------|---------|-----------------|
| Annual Cost | ₹6,240 (~$75) | ₹1,40,000+ (~$1,700+) | ₹3,00,000+ (~$3,600+) |
| Installation | None (browser) | 5-10 GB download | Large installer |
| Platform | Any browser | Windows primarily | Windows/Mac |
| CAD Tools | ✓ | ✓ | ✗ |
| Circuit Sim | ✓ | ✗ | Via add-on |
| Interactive Learning | ✓ | ✗ | ✗ |
| Signal Processing | ✓ | ✗ | ✓ |

---

## Technical Details

### Supported Browsers
- Google Chrome (recommended)
- Mozilla Firefox
- Safari
- Microsoft Edge

### File Formats
- **Export**: PDF, SVG
- **Native format**: .eve (cross-platform project files)
- **SimLAB imports**: CSV, Excel, JSON, MP3, WAV
- **Coming soon**: DXF/DWG import and export for full AutoCAD compatibility

### System Requirements
- Any device with a modern web browser
- Internet connection for cloud sync
- No special hardware required
- Works on desktop, laptop, and tablet

---

## Who Uses EverrCAD?

1. **Electrical Engineers**: SLD design, circuit simulation, power distribution planning
2. **Mechanical Engineers**: Technical drawings, parts design, engineering diagrams
3. **Architects**: Floor plans, layouts, elevation drawings
4. **Engineering Students**: Learning platform with interactive 3D lessons + CAD practice
5. **Educators**: Interactive teaching tools with simulations and visualizations
6. **Small Businesses & Consultants**: Professional CAD at a fraction of traditional costs
7. **Hobbyists**: Circuit design, electronics projects, learning

---

## Frequently Asked Questions

**Q: Is EverrCAD free?**
A: Yes. EverrCAD offers 2 hours of free usage per day with access to ALL features and ALL 5 modes. No credit card required. For unlimited access, subscribe for ₹520/month.

**Q: Can EverrCAD replace AutoCAD?**
A: For 2D CAD and electrical SLD design work, EverrCAD provides professional tools at 95% lower cost. It's browser-based, works on any platform, and includes additional capabilities (circuit simulation, learning, SimLAB) that AutoCAD doesn't offer.

**Q: What are the 5 modes?**
A: SLD Mode (electrical diagrams), 2D CAD Mode (technical drawing), Circuit Mode (simulation), Learn Mode (engineering education), and SimLAB (signal processing/programming).

**Q: Do I need to install anything?**
A: No. EverrCAD runs entirely in your web browser. Works on Windows, macOS, Linux, ChromeOS, and tablets.

**Q: Can I run Python in my browser with EverrCAD?**
A: Yes. SimLAB uses Pyodide to run Python with NumPy, SciPy, and Matplotlib entirely client-side. No server required.

**Q: Is my data secure?**
A: Yes. Data is stored with enterprise-grade encryption. Designs, circuits, and scripts are private by default.

**Q: What file formats does EverrCAD support?**
A: PDF and SVG export for documentation. Native .eve format for project files. SimLAB supports CSV, Excel, JSON, MP3, and WAV imports. DXF/DWG compatibility is in active development.

---

## Contact & Links

- **Website**: https://everrcad.com
- **About Page**: https://everrcad.com/about.html
- **Pricing**: https://everrcad.com/pricing
- **Documentation**: https://everrcad.com/docs.html
- **Free CAD Software Info**: https://everrcad.com/free-cad-software.html
- **AutoCAD Alternative Info**: https://everrcad.com/autocad-alternative.html

---

*EverrCAD — Professional engineering tools, accessible to everyone. Design. Simulate. Learn.*