wlpuah / RUMBA32 - History

Adjust heated bed traces

Beefing up connection between HB fuse and screw terminal, this was found to be the 'weakest link' in a thermal analysis. It wasn't really a problem, existing trace was easily handling 10A+, but might as well improve it.

Change 5V regulator

Change LT1933 regulator to AOZ1282CI. Higher current rating (1.2A vs 600mA) and easier to source. Feedback resistors to set voltage changed accordingly.

Stepper wire colours to match cables

Really a subjective thing as most suppliers will have different colours / orders for stepper wire colours, but new order matches Aus3D steppers and cables so far.

Update DTR Pin

Route changed pin

Uniform screw holes

Fix inconsistent sizing on screw holes

Tidying Files

Add images, schematic + BOM in PDF format. Tidy folder structure.

Manufacturing Files

Tidied files, manufacturing outputs

WIP

BOM partially completed. PTC fuses changed to blade-style fuse holders for > 12V operation. Flyback diodes for MOSFETs added to schematic but not board yet. Need to find better logic-level MOSFETs.