October 2026
- Improvement
Compare and worked-math blocks in lesson diagrams
Lessons can now show two circuits side by side and walk through a calculation step by step next to the diagram.
Open - Lab
Free troubleshooting labs
Starter fault-finding practice is open on the free plan, so you can try the half-split method on a faulty circuit before deciding on anything else.
Open - Lab
HMI exercise 14: fix a bad screen
Review a cluttered operator screen, find what an operator would misread, and repair it against a graded checklist.
Open - Pricing
Prices shown in your local currency
Where we can tell your country, the pricing page shows an approximate local price next to the USD price. The amount charged is set at checkout from your billing country.
Open - Feature
Recap cards on the beginner labs
Short recall prompts bring back the idea from the previous lab before you start the next one.
Open - New track
New track: Drawings and Documentation
Read a P&ID and an electrical drawing set, follow a signal from the process to a PLC terminal, and document your own work the way an employer expects. 10 units, 3 free.
Open - New track
New track: Electrical Foundations
The electrics you need before PLC wiring: Ohm's law to a start/stop circuit, in 12 short units. 12 units, 4 free.
Open - New track
New track: Electronics Foundations
The electronics inside sensors, I/O cards and controllers: parts, switching, signals and fault finding, with a small circuit explorer. 12 units, 3 free.
Open - New track
New track: Industrial Networks and SCADA
From a sensor reading to a historian trend: how plant data moves, which protocol does which job, and how to keep the whole system secure and readable. 16 units, 4 free.
Open - New track
New track: Industrial Safety
Why machines are guarded, how stops and interlocks work, and the safe habits that keep technicians and controls engineers out of trouble. 12 units, 4 free.
Open - New track
New track: Mechanical Foundations
The mechanical half of mechatronics in plain language: torque, gears, belts, bearings and troubleshooting, in 12 short units. 12 units, 3 free.
Open - New track
New track: Motion and fluid power
From choosing the actuator to a working pick-and-place cycle: encoders, motion profiles, homing, pneumatics and hydraulics seen from the PLC programmer’s side. 15 units, 5 free.
Open - New track
New track: Troubleshooting
A repeatable way to find faults: measure before you replace, halve the circuit, and read what the LEDs, the program and the meter are each telling you. 27 units, 7 free.
Open - New track
New track: Vendor References
Instruction references and runnable labs for Allen-Bradley, Siemens, Mitsubishi and CODESYS. 37 units, 4 free.
Open - Improvement
Wiring labs are now checked on the server
Your wiring answer is graded by the server, with Check, Hint, Guided and Reveal steps. Hints are capped so you get a nudge before the full answer.
Open