AllSpice demonstration repo
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AllSpiceUser 06bb9de59d Merge pull request 'Add ESD protection to endstop inputs' (#8) from develop into main 1 month ago
.allspice Add check for correct branch 1 month ago
Firmware@2f9e3b771e Add firmware submodule 2 years ago
.gitattributes Change prjpcb files to linguist-generated to collapse diffs 1 month ago
.gitignore Add output files to .gitignore 1 month ago
.gitmodules Add descriptions to submodules 1 month ago
Archim.OutJob Change gerber output to metric 1 month ago
Archimajor.PcbDoc Add ESD protection to endstops 1 month ago
Archimajor.PrjPcb Create variant to test range of motion 1 month ago
Archimajor.SchDoc Increase sch block title size for readability 1 month ago
Archimajor.csv Add ESD protection to endstops 1 month ago
Connectors.SchDoc Add "motor 2" label to differentiate motors 1 month ago
EndStops.SchDoc Add ESD protection to endstops 1 month ago
Fans.SchDoc Increase LED Brightness, change R from 10K to 4.7K 1 month ago
Microcontroller.SchDoc Add netclass "CANBUS" to canbus net 1 month ago
Mosfets.SchDoc Remove extra mosfet channel 1 month ago
Motors.SchDoc Remove motor shorted net 1 month ago
Power.SchDoc Change heatbed power fuse holder to differentiate channels 1 month ago Add note about heat bed fuse holder 1 month ago
Thermistors.SchDoc Add testpoints to schottky diodes for factory test 1 month ago
Thermocouples.SchDoc Add layout notes for cap placement and trace symmetry to reduce noise 1 month ago
USB.SchDoc Update EOL 3pf capacitors 1 month ago Update license to differentiate hardware and firmware licenses 1 month ago



3D printer motherboard, designed by Ultimachine. Features include:

  • 5x integrated 256 microstep motor drivers
  • 6x PWM Mosfet outputs
  • 4x thermistor inputs
  • SPI (Serial Peripheral Interface)


General Specifications

Input Power Supply: 12V - 24V DC, 16A+

Operating Temperature Range (est.): 0dC ~ 70dC




Bill of Materials



Changed heat bed fuse holder to yellow to differentiate channels.


*NOTE: This does not represent actual data from the Rambo/Archimajor PCBA