Upgrade Ender 3 with Diamond Hotend As I want to print with multiple colors I plan to upgrade my Ender 3 with the diamond hotend.

So far I found all information I need, except what power supply I need for my RUMBA board.

Can I use the default Ender 3 power supply or do I need an additional power supply or wires?

Parts I am going to order:


1x Lite6 Heatsink
3x Diamond Universal mount
1x 12&nbsp;V 40&nbsp;W 6&nbsp;mm x 20&nbsp;mm Cartridge Heater Reprap For 3D Printer
1x Thermistor 100K 1&nbsp;% NTC Temperature Sensor Line for 3D Printer
1x Fan 50x50x15&nbsp;mm 12&nbsp;V 125&nbsp;mA
1x Diamond Hotend Insulator
1x Nema17 stepper motor 48&nbsp;mm 1.8&deg; 42BYGHW804 1.2&nbsp;A 5.5&nbsp;kg•cm
3x MK8/9 Dual Extruder Feed Device Part For 3D Printer 1.75&nbsp;mm Filament
3x Bowden tube 1&nbsp;m with fitting 4/2&nbsp;mm (for 1.75&nbsp;mm filament)
1x RUMBA 3D printer controller board
6x StepStick DRV8825 Stepper Motor Driver
The RUMBA boards run up to 36&nbsp;V, so reusing the (24&nbsp;V) power supply from your printer should be fine. As the 2 extra steppers do not take much extra power (note you are ordering only 1!), your supply should be sufficient. Note that a 12&nbsp;V heater cartridge is not going to work on a 24&nbsp;V board (you'll get a massive overshoot and probably over-temperature warnings and printer shutdowns).