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Free Automation Learning
Learn industrial automation online, free.
Notes, practice tasks and curated videos for students, technicians and early-career engineers, from fundamentals to a test-setup project. No fees, no batches.
- Topics
- 09
- Web learning topics
- 40+
- Practical tasks
- 20+
- Lesson pages
- 08
How it works
Free learning, shared by an engineering team.
Written by working engineers
Varin is an engineering company, not a training institute. These notes come from the panels, test setups and software we build for plants.
Start
Pick a topic or begin with fundamentals
Study
Follow category-wise notes and videos
Practice
Complete IO, PLC, HMI, SCADA, and test tasks
Apply
Use the project work at your job, in interviews or on site
Learning path
Nine topics, from fundamentals to a test-setup project.
01Automation FundamentalsFoundation
Build the base vocabulary of machines, sensors, IO, interlocks, alarms, safety thinking, and sequence behavior.
Study content
- Industrial automation architecture
- Digital and analog signals
- NO/NC sensors and field devices
- Machine sequence and interlock logic
- Alarm, fault, reset, manual, and auto modes
Practice tasks
- Create an IO list
- Trace a sensor-to-PLC signal
- Write a basic machine sequence
Videos and lessons
02PLC ProgrammingCore
Learn PLC thinking through ladder logic, timers, counters, latches, permissives, interlocks, alarms, and sequence programs.
Study content
- PLC hardware and scan cycle
- Ladder logic fundamentals
- Timers, counters, memory bits, and edge logic
- Motor starter, pump, valve, and conveyor examples
- Fault handling and safe restart logic
Practice tasks
- Build motor start-stop logic
- Create pump alternation logic
- Write a fault reset routine
Videos and lessons
03HMI and Operator ScreensCore
Design useful operator screens for machine status, controls, recipes, alarms, diagnostics, and maintenance workflows.
Study content
- HMI screen hierarchy
- Status indicators and command buttons
- Alarm pages and diagnostic messages
- Recipe and parameter screens
- Operator-friendly navigation
Practice tasks
- Sketch a machine overview
- Create an alarm message table
- Map screen controls to PLC tags
Videos and lessons
04SCADA, Trends and ReportsCore
Understand plant visibility with tag databases, alarm history, trends, dashboards, reports, and multi-machine monitoring.
Study content
- SCADA architecture and PLC communication
- Tag naming and alarm groups
- Historical trends and event review
- Shift reports and production summaries
- Dashboard thinking for maintenance teams
Practice tasks
- Build a tag list
- Read a trend and write observations
- Prepare a daily report format
Videos and lessons
05Instrumentation and IOCore
Study sensors, transmitters, wiring discipline, signal scaling, IO checks, calibration awareness, and troubleshooting.
Study content
- Proximity, photoelectric, pressure, temperature, and level sensors
- PNP/NPN, relay, 0-10 V, and 4-20 mA signals
- Shielding, grounding, and cable identification
- Scaling and engineering units
- Field validation and loop checking
Practice tasks
- Prepare a loop-check sheet
- Scale analog values
- Document sensor fault symptoms
Videos and lessons
06Panels and CommissioningProfessional
Learn panel awareness, wiring checks, device identification, FAT/SAT discipline, commissioning notes, backups, and handover readiness.
Study content
- Panel components and control power
- Terminal blocks, relays, MCBs, SMPS, contactors, and VFD awareness
- Wiring checks and ferrule discipline
- FAT, SAT, punch points, and commissioning reports
- Backup, documentation, and handover pack
Practice tasks
- Read a panel drawing
- Prepare FAT checklist
- Create handover document index
Videos and lessons
07Virtual InstrumentationProfessional
Use software-based instrumentation concepts for acquisition, logging, visualization, reports, and test-friendly data workflows.
Study content
- DAQ and instrument communication concepts
- Live trends, gauges, alarms, and operator panels
- CSV logging and timestamped records
- Report generation basics
- Python-friendly measurement architecture
Practice tasks
- Design a data log format
- Create a dashboard wireframe
- Plan a report template
Videos and lessons
08AI-Based Automation LearningAdvanced
Use AI responsibly for concept revision, documentation drafts, diagnostic checklists, anomaly review, and structured engineering notes.
Study content
- AI prompts for automation study
- Fault-diagnosis checklist generation
- Trend observation and anomaly awareness
- Documentation and report drafting
- Human review and engineering validation
Practice tasks
- Write a diagnostic prompt
- Review AI output for mistakes
- Turn a trend into an action note
Videos and lessons
09Automated Test Setup ProjectCapstone
Combine controls, instrumentation, operator workflow, data logging, pass/fail logic, reports, and project documentation.
Study content
- Requirement reading and test sequence planning
- Fixture, sensor, actuator, and instrument mapping
- Pass/fail criteria and retry logic
- Traceable data logging and report outputs
- Final demo, review, and interview explanation
Practice tasks
- Prepare project architecture
- Write test sequence steps
- Present final project notes
Videos and lessons
Outcomes
What you will be able to do.
Controls Thinking
Sequences, interlocks, IO, alarms and safe restart.
Engineering Documentation
IO lists, alarm tables, FAT/SAT checklists and handover notes.
Practical Troubleshooting
From fault symptom to IO check, logic review and action note.
AI-Aware Practice
Use AI for revision and checklists without skipping validation.
Stuck on a topic or spotted a mistake?
Tell us. We keep these notes up to date alongside our engineering work.