Caught by the hype and abnormal capabilities to make what you design in quick a 3D head was soon on the buy list.
I’ve found a nice hot end and extruder that didn’t cost much. The XYZ movements are controlled as normal and A for extruder is placed as extension. I use the normal spindle M3 output to tell the hot end to reach its set temperature. A PID controls the temperature; in this case an Arduino Uno and a special shield. For setting the temperature it has a 10k potmeter.