SharkToothID vs PLC Visual Learning Studio

A visual guide for identifying fossil shark teeth and other fossils found along the East Coast, including the Carolinas, Georgia, and Florida. Explore detailed fossil photographs, along with images and descriptions of the extinct animals they came from. More than just shark teeth—identify fossils from fish, rays, alligators, horses, and many other prehistoric animals.

The complete PLC learning environment — built for engineers, technicians, and students. PLC Engineering Lab is a structured, hands-on reference app covering Programmable Logic Controllers from first principles through advanced industrial applications. Whether you're studying for a certification, transitioning into automation, or need a fast reference on the job, this app has you covered. LEARN — Structured Curriculum Six courses, multiple modules, and step-by-step lessons covering every major PLC topic: system architecture, hardware, I/O wiring, all five IEC 61131-3 programming languages (Ladder Logic, Structured Text, Function Block, Sequential Function Chart, and Instruction List), PID control, industrial networking, SCADA, safety systems, and Industry 4.0. • Progress tracking with completion badges • Bookmarks to save your place • Built-in quizzes to test your knowledge • Estimated read times per lesson CODE SANDBOX — Live Editor + Simulation Write and simulate PLC code directly on your device using a full CodeMirror syntax-highlighted editor. Switch between Ladder Logic, Structured Text, Function Block, and Sequential Function Chart with one tap. • Live simulation panel shows real I/O logic in action • Motor Start/Stop latch with toggle inputs and LED outputs • Traffic light state machine with variable watch • SR flip-flop simulation for Function Block • Step-by-step SFC machine sequencer • Load built-in examples or write your own PROJECTS — Interactive Diagrams Five real-world engineering projects, each with an interactive SwiftUI system diagram, step-by-step build guide, and full code in all three text languages. • 3-Zone Conveyor Belt with zone interlocks • 4-Phase Traffic Light Controller • Tank Level PID Control Loop (with live slider) • Packaging Line Shift-Register Sorter • HVAC Air Handling Unit — 8-Zone Control ILLUSTRATIONS — Visual Reference Gallery 19 full-screen, pinch-to-zoom diagrams covering the entire PLC knowledge domain — organized in a logical learning sequence. • PLC control system architecture diagrams • Hardware block diagrams and I/O wiring • Ladder Logic and Structured Text code walkthroughs • P&ID schematics for conveyor, tank, HVAC, and traffic systems • SCADA architecture, network topologies, Modbus/Profinet • Safety circuit diagrams, SIL levels, IIoT, and digital twins REFERENCE — Searchable Quick-Look A filterable reference library covering contacts & coils, timers & counters, math & comparison, data & move, control flow, function blocks, and a full PLC glossary — across all four IEC languages. GUIDE — Language & Vendor Cheat Sheet Quick-reference cards for every IEC 61131-3 language with vendor notes for Allen-Bradley (Studio 5000), Siemens (TIA Portal), Codesys, Schneider, and Omron. Designed for iPhone and iPad. Optimized for portrait and landscape. No subscription. No ads.