Hi all,
Currently interested to build my own 3d printer from scratch with components I ordered individually online, I’m working on using my 3D printer to run on a 24V power supply and would appreciate any advice, especially since I’m new to this.
My setup:
- 220W 24V heatbed
- 40W hotend (Creality Ender 5 Pro kit with two 24V-fans)
- 24V 25A PSU
What I want to do is add up some mods to either a RAMPS1.4 or a RAMPS1.6 so as to run it safely without damaging my Arduino MEGA 2560:
- if with RAMPS 1.4: I understand I need to replace the large polyfuses with ones rated for 24V or higher, and the MOSFETs are usually okay if properly heatsinked. Also, I’ll remove diode D1 to protect the Arduino from overheating when running at 24V and add up an external MOSFET for the heatbed that will likely draw 220/24= 9.16A.
- if with RAMPS 1.6: I have to replace or bypass the small SMD fuses (F1 and F2) with 24V-rated fuses or external fuses, remove diode D1 from the board, and I’m considering adding an external MOSFET specifically for the heated bed to handle higher current more safely.
I will use all components on 24V voltage (fans).
- capacitors are ok as they're rated for 35V
What I would appreciate help with:
- Step-by-step guidance or tips on safely doing these mods for both RAMPS 1.4 and 1.6 boards if you see any I did not account for.
- Recommendations for fuse types, MOSFETs, fan upgrades, and any special considerations when upgrading to 24V.
- Common pitfalls or safety tips for beginners.
Thanks in advance for any guidance to help me make these mods safely!
