Educational simulators
Guided fault-finding on a linear power supply board: interactive schematic, measurements at every test point, component datasheets per pin and an intervention log. Finish by declaring the fault.
Rebuild how a transfer station works: real-time machine, inputs / outputs, Ladder logic and Grafcet, down to the final fault diagnosis.
"A weight off centre": watch the flywheel drift, analyse the time curves and the measurements, then identify the imbalance the controller must correct.
Understand the PID, tune a gain by trial and error, then refine it on a typical temperature process driving a drone's altitude. Step 1: the P term, with live curves and measurements.
Walk through the 32R-DC V3.3 schematic across three sheets: power supply and control, inputs, outputs. Clickable zones, voltmeter, component datasheets, LCD display and a simulation lab for the ESP32 → I2C → MCP23017 → opto → relay chain.