Overheat protection

This option is not available for ESP8266

Current sensors are required for this option, they are not included on all driver boards.

In-line current sensing

The current sensors can be used for Field Oriented Control and inline sensing of the current drawn by the motor to prevent overheating.

IMPORTANT: Check what type of sensor and resistor values are being used to determine the right values for the shunt_resistor and gain (see image and code below). Check the PCB pinout to see which analog pins are used to read the sensors.

Gain current sensor: INA240A2: 50 V/V INA240A3: 100 V/V

Values shunt resistors: '4MO' : 4 mΩ 'R030' / 'R05F' : 50 mΩ

Driver PCB: with shunt resistors (pink) and current sensors (orange).

// code derived from https://docs.simplefoc.com/inline_current_sense

// InlineCurrentSensor constructor
// - shunt_resistor  - shunt resistor value
// - gain  - current-sense op-amp gain
// - phA   - A phase adc pin
// - phB   - B phase adc pin
InlineCurrentSense current_sense = InlineCurrentSense(shunt_resistor, gain, phA, phB);

// Example INA240A2 & 50mΩ
InlineCurrentSense _current_sense = InlineCurrentSense(0.05, 50, PC1, PC2);

// initialize Feelix with current sense
Feelix feelix = Feelix(&_bldc, &_driver, &_sensor, &_current_sense);

// reading current sense values
feelix.getCurrentSenseValues();

// access current sense values
feelix.currents.a;
feelix.currents.b;

More information regarding how to use the output values from the current sensors in the code will follow soon. More information can also be found at simpleFOC.com