Analog & instrumentation
The floor isn't just ON and OFF — levels, pressures and temperatures arrive as 4–20 mA signals. Scale them, compare them into rungs, tame them with deadbands, write recipes with MOV, and learn the two ways an instrument lies. Every lesson runs its circuit live in the builder.
Module 1 · The signal
Module 2 · Patterns that hold
Module 3 · Write the number, doubt the number