flexi-bot/docs/marlin/_gcode/M305.md

tag	title	brief	author	requires	group	codes	notes	parameters	examples
m0305	User Thermistor Parameters	Set (or report) custom thermistor parameters	shitcreek	temperature sensor `1000`	thermal	M305	Must specify temperature sensor `1000`	tag optional description values P true Thermistor table index tag type index int tag optional description values R true Pullup resistor value tag type ohm int tag optional description values T true Resistance at 25C tag type ohms int tag optional description values B true Thermistor "beta" value tag type beta int tag optional description values C true Steinhart-Hart Coefficient 'C' tag type coeff float	pre code Set temperature sensor 0 pullup resistor value to 4.7K, resistance to 100K, thermistor beta value to 3950, and coefficient to 0 M305 P0 R4700 T100000 B3950 C0.0

Allows for custom temperature sensor.