IoT-based Machine Utilization Monitoring project for a CNC machine and conventional lathe.

The objective is to detect machine states (OFF, IDLE and RUNNING) and record their operating times using an ESP32.

We want a non-invasive current measurement solution. The machine has an incoming AC supply through a stabilizer, which is converted internally to DC for the motor.

I need help with:

Selecting the correct AC/DC current sensor.

Designing the sensor interfacing and signal-conditioning circuit.

Preparing the complete hardware BOM and wiring diagram.

Testing the setup to distinguish OFF, IDLE and RUNNING states.

I already have an ESP32 DevKit and some basic electronics components.

Could you help validate and build a working hardware prototype? Please share your experience and estimated charges.