Professional Wiring Diagrams for Android

Draw Electrical Schematics
Anywhere.

PROTOSchem puts a full-featured wiring diagram editor in your pocket — built for engineers, technicians, students, and contractors working on real electrical projects.

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// Who It's For

Built for the people who build things

PROTOSchem is designed for professionals and learners working with real-world electrical systems — on-site and off.

👷
Engineers
Design control panels, power distribution, and complex installation systems
🔧
Technicians & Contractors
Document wiring on-site, generate technical submissions fast
🎓
Students
Learn standard electrical symbols and practice schematic drawing
Electrical wiring diagram designed with PROTOSchem
// Core Features

Everything you need to design professional diagrams

From simple residential wiring to complex industrial control panels — PROTOSchem has the tools to get it done, on-site or in the office.

Extensive Symbol Library

Hundreds of standard electrical symbols — switches, relays, transformers, breakers, contactors, protection elements, and household appliances.

Smart Editing Tools

Align components, label connections, drag, drop, rotate, and duplicate elements with speed and precision.

Zoom & Pan Canvas

Smooth pinch-to-zoom and pan so you never lose the big picture while working on precise connections.

Day & Night Mode

Switch between light and dark themes for comfortable work indoors, outdoors, or in low-light field conditions.

Multi-Format Export

Export finished diagrams as PDF, PNG, or JPG for documentation, project submissions, or on-site reference.

Mobile-First Design

Clean interface optimized even for smaller screens — practical for both office work and on-site fieldwork.

Industrial & Residential

Design power distribution layouts, single-line diagrams, control panel schematics, and complete installation plans.

No Data Shared

Your diagrams stay yours. No data shared with third parties. All project data encrypted in transit.
// Symbol Library

Every component you need

An extensive library covering industrial, commercial, and residential symbols — every project has the building blocks it needs.

Connections
Buttons
Switches
Coils
Relays
Fuses
Home appliances
Photovoltaic
Meters
Sockets
Converters
Circuit breakers
+ many more
// Export Options

Ready for presentation, print, or on-site

Export finished diagrams in the format your project requires — whether for documentation, technical submission, or client review.

PDF
Print-ready documents
PNG
Crisp transparency
JPG
Universal sharing
Wiring diagram exported from PROTOSchem for print
PROTOSchem workspace showing an electrical wiring diagram on Android PROTOSchem grid canvas with component placement on Android PROTOSchem diagram menu with project options on Android PROTOSchem electrical symbol library on Android
// Get Started

From first concept to final documentation

Free to install. Start drawing professional wiring diagrams on your Android device today.

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