PROTOSchem - electrical wiring

⚡ PROTOSchem is a professional Android tool for creating wiring diagrams, electrical plans, and circuit diagrams directly on your mobile device.

📐 Designed for engineers 👷, technicians 🔧, students 🎓, and contractors working on real-world electrical projects, PROTOSchem combines precision and flexibility to support both industrial and residential installation tasks. Draw electrical schematics and single-line diagrams used in power distribution, control panel design, and complex installation systems. Plan and document electrical wiring with clear structure and logical organization, making your work easy to read, present on-site, or include in technical submissions.

🧩 Build complete layouts using an extensive library of electrical symbols — including switches, relays, transformers, breakers, contactors, protection elements, and home appliances such as air conditioners, washing machines, and electric stoves. With nearly 500 standard symbols covering industrial, commercial, and residential components, every project has the building blocks it needs from the very first sketch to the final design.

🏭 PLC Ladder & Single-Line Diagrams
👉 PLC ladder diagrams with standard symbols based on IEC 61131-3: NO/NC and edge-triggered contacts, coils, set/reset coils, TON/TOF timers, CTU/CTD counters, comparisons, math blocks, MOVE and a PID controller.
👉 Single-line diagrams with compact IEC-style symbols for breakers, fuses, transformers, meters, motors and solar PV components. Plan power distribution, switchboards and PV installations.

✨ Smart editing tools let you align components, label connections, drag, drop, rotate, and duplicate elements with speed and accuracy. Zoom and pan smoothly across your workspace to manage both fine details and large-scale projects without losing clarity. Structured layouts and consistent symbol usage ensure your diagrams remain readable and professional at every stage of development.

🌙 The clean, user-friendly interface works efficiently even on smaller screens, making it practical for both office work and on-site fieldwork. Built-in day and night mode ensures comfortable work in any lighting conditions — indoors, outdoors, or in low-light environments.

📤 Export your finished diagrams as PDF, PNG, or JPG for documentation, project submissions, or on-site reference. Whether you are designing control panels, developing new systems, or preparing technical documentation, PROTOSchem helps you produce clear, accurate, and professional circuit layouts ready for presentation or print. Also save any project as DXF and keep working on it in your desktop CAD software. The files open in AutoCAD, LibreCAD, FreeCAD and other DXF-compatible programs. Sketch on-site, then check, edit and finish it on your computer.

🚀 From first concept to final documentation, PROTOSchem supports structured project development and gives engineers, technicians, and contractors a reliable mobile solution for everyday fieldwork, planning, and technical design.

💬 Feedback & Support
👉 https://github.com/Proto-App/PROTOSchem/issues
👉 [email protected]