For electrical and automation teachers

If you teach electrical installation, industrial automation, mechatronics or a vocational course, everything on this site can be used in the classroom: the simulators, the theory and the tests. It is free, needs no sign-up and works on the classroom computer, on the projector and on each student's phone.

Printable worksheets

Each simulator has a worksheet of about 40 minutes, with guided exercises, a fault-finding part and the answers at the end, on a separate page so you can remove them before handing it out. Open it and press «Print»: it prints clean, without menus or background colours.

• The multimeterMeasuring on a three-phase supply and a 24 V control circuit, the amps-socket mistake and fault-finding section by section.
• PNP and NPN sensorsWiring a 3-wire sensor, hysteresis, materials, input card types and faults.
• Motor control circuitsStart-stop with seal-in, forward-reverse, interlocks and faults.
• Star-delta starterCurrent in star and in delta, changeover time, loads, interlock and overload setting.
• Ladder logicSeal-in, interlocks, timers, counters and the double-coil mistake.
• PLC timers and countersTON, TOF, TP, TONR, CTU and CTD: timing diagrams and which block to choose.

How to use it in class

• Before wiring the training panel: let students try the circuit in the simulator and make their mistakes there. Removing an interlock or measuring amps in parallel costs nothing on screen.
• To explain on the projector: the diagrams animate themselves and show where the voltage goes, which is hard to teach on a whiteboard.
• Surprise faults: each simulator has a mode that puts in a random fault. It works well in pairs or as a quick challenge at the end of the lesson.
• Revision tests: each topic has a test with an explanation for every answer, useful as homework or before an exam.

What you can do with the material

You can print the worksheets and hand them out to your students, project the simulators and link any page from your school's learning platform, without asking permission. All we ask is that it is not sold or published as your own on another website.

What we are working on

We are considering a classroom version, with an exam mode in which each student gets random faults and a mark at the end. If you are interested, or if you are missing a particular simulator or worksheet, write to the contact address at the bottom of the page: what teachers ask for gets done first.