OpenSCAD Library

Mechanical parameters for various components.

Note: All units are in millimeters unless otherwise noted.

Raspberry Pi

Raspberry Pi PCBs.

File	Description
rpi/rpi_common.scad	Common RPi mechanical parameters
rpi/rpi_4b.scad	RPi 4B mechanical parameters
rpi/rpi_camera_hdmi_extension.scad	Petit Studio's Pi Camera HDMI Cable Extension

rpi/rpi_common.scad

Usage:

include <openscad-library/rpi/rpi_common.scad>;

Variables

Variable	Type	Description
rpi_corner_radius	Number	Radius of the rounded RPi PCB corners
rpi_gpio_dimensions	Vector	Dimensions of the 40 pin GPIO header
rpi_screw_hole_diameter	Number	Diameter of the RPi mounting screw holes
rpi_screw_hole_edge_distance	Number	Distance from the bottom, left, and top PCB edges to center of the mounting screw holes
rpib_ethernet_dimensions	Vector	Model B Ethernet port dimensions
rpib_gpio_position	Vector	Location of the bottom left corner of the model B GPIO header
rpib_pcb_dimensions	Vector	Dimensions of the bare RPi model B PCBs
rpib_screw_hole_spacing	Vector	Model B X and Y distance between the centers of the mounting screw holes
rpib_screw_holes	Vector	Positions of the 4 mounting screw holes on model Bs
rpib_usd_dimensions	Vector	Model B micro SD card slot dimensions

rpi/rpi_4b.scad

Usage:

include <openscad-library/rpi/rpi_4b.scad>;

Variables

Note: rpi/rpi_4b.scad includes all variables from rpi/rpi_common.scad

Variable	Type	Description
rpi4b_audio_dimensions	Vector	Dimensions of the audio / composite video port
rpi4b_audio_position	Vector	Location of the bottom left corner of the audio / composite video port
rpi4b_camera_port_dimensions	Vector	Dimensions of the camera port
rpi4b_camera_port_position	Vector	Location of the bottom left corner of the display port
rpi4b_display_port_dimensions	Vector	Dimensions of the display port
rpi4b_display_port_position	Vector	Location of the bottom left corner of the display port
rpi4b_ethernet_position	Vector	Location of the bottom left corner of the Ethernet port
rpi4b_ethernet_usb_pcb_overhang	Number	X distance that the Ethernet and USB ports extend past the PCB edge
rpi4b_poe_dimensions	Vector	Dimensions of the PoE header
rpi4b_poe_position	Vector	Location of the bottom left corner of the PoE header
rpi4b_pwr_dimensions	Vector	Dimensions of the USB-C power port
rpi4b_pwr_position	Vector	Location of the bottom left corner of the USB-C port
rpi4b_soc_dimensions	Vector	Dimensions of the SoC
rpi4b_soc_position	Vector	Location of the bottom left corner of the SoC
rpi4b_uhdmi_dimensions	Vector	Dimensions of the micro HDMI ports (Includes the shrouds on each side of the port)
rpi4b_uhdmi_positions	Vector	Location of the bottom left corners of the micro HDMI ports (Includes the shrouds on each side of the port)
rpi4b_usb_dimensions	Vector	Dimensions of the USB ports
rpi4b_usb_positions	Vector	Locations of the bottom left corners of the USB ports
rpi4b_usd_position	Vector	Location of the bottom left corner of the Micro SD card slot

Modules

Module	Description
Raspberry_Pi_4B()	Simple 3D model of the RPi 4B

rpi/rpi_camera_hdmi_extension.scad

Usage:

include <openscad-library/rpi/rpi_camera_hdmi_extension.scad>;

Variables

Variable	Type	Description
pchce_cam_connector_dimensions	Vector	Dimensions of the camera ribbon cable connector
pchce_cam_connector_position	Vector	Location of the camera ribbon cable connector
pchce_hdmi_dimensions	Vector	Dimensions of the HDMI port
pchce_hdmi_position	Vector	Location of the bottom left corner of the HDMI port
pchce_pcb_dimensions	Vector	Dimensions of the bare PCB
pchce_screw_hole_diameter	Number	Diameter of the mounting screw holes
pchce_screw_hole_edge_distance	Number	Distance from the bottom, left, and top PCB edges to center of the mounting screw holes
pchce_screw_hole_positions	Vector	Positions of the 4 mounting screw holes
pchce_screw_spacing	Vector	X and Y distance between the centers of the screw holes

Modules

Module	Description
Pi_Cam_HDMI_Ext()	Simple 3D model of the Pi Camera HDMI Cable Extension

Servos

File	Description
servos/hitec_hs-85mg.scad	Hitec HS-85MG micro servo dimensions

servos/hitec_hs-85mg.scad

Usage:

include <openscad-library/servos/hitec_hs-85mg.scad>;

Variables

Variable	Type	Description
hs85mg_dah_center_width	Number	Width of the center of the double arm horn
hs85mg_dah_end_width	Number	Width of the ends of the double arm horn
hs85mg_dah_installed_z_center	Number	Distance from bottom of servo (Z = 0) to center of double arm horn
hs85mg_dah_length	Number	Length of the double arm horn
hs85mg_dah_screw_hole_diameter	Number	Diameter of the six arm screw holes
hs85mg_dah_screw_hole_distances	Vector	Distance from center of horn to the three screw holes. Distances are the same for both sides of the arm.
hs85mg_dah_screw_shroud_diameter	Number	Diameter of the output shaft screw shroud
hs85mg_dah_screw_shroud_height	Number	Height of the output shaft screw shroud
hs85mg_dah_thickness	Number	Thickness of the arms of the double arm horn
hs85mg_flange_dimensions	Vector	Dimensions of the mounting flanges
hs85mg_flange_location_z	Number	Bottom of servo to mounting flanges
hs85mg_flange_screw_hole_diameter	Number	Diameter of the mounting flange screw holes
hs85mg_flange_screw_hole_locations	Vector	Locations of the two mounting screw holes, relative to hs85mg_main_body_with_flanges
hs85mg_flange_wire_space	Number	Distance between wire and mounting flange
hs85mg_main_body_with_flanges	Vector	Dimensions of the main body, including the mounting flanges
hs85mg_main_body	Vector	Dimensions of the main body (excluding the mounting flanges)
hs85mg_output_shaft_diameter	Number	Diameter of the output shaft
hs85mg_output_shaft_height	Number	Z height of the output shaft
hs85mg_output_shaft_location	Vector	Output shaft location does not include mounting flanges. Location is the center of the bottom of the output shaft

Modules

Module	Description
HS85MGFlangeSpacer(inner_diameter, od_allowance)	Toroidal spacer for the flange screw holes. inner_diameter (Number): Diameter of the spacer hole. Default is 2.45mm. od_allowance (Number): Outer diameter mechanical allowance between spacer and flange. Default is 0.05mm.

Miscellaneous

File	Description
cherry_mx_switch_plate.scad	Cherry MX mechanical key switch mounting plate
fasteners.scad	Mechanical parameters for various nuts, bolts, etc
utilities.scad	Miscellaneous useful modules.

cherry_mx_switch_plate.scad

Usage:

include <openscad-library/cherry_mx_switch_plate.scad>;

Variables

Variable	Type	Description
cherry_plate_dimensions	Vector	Dimensions of the switch mounting plate
cherry_plate_screw_hole_diameter	Number	Diameter of the switch mounting plate screw holes
cherry_plate_screw_locations	Vector	Locations of the 4 mounting screw holes
cherry_plate_switch_cutout_position	Vector	Location of the Cherry MX switch cutout
cherry_plate_switch_cutout	Vector	Dimensions of the cutout for the Cherry MX switch

Modules

Module	Description
CherryMXSwitchPlate()	3D model of the Cherry MX switch plate using the above variables

fasteners.scad

Usage:

include <openscad-library/fasteners.scad>;

Variables

Variable	Type	Description
threaded_insert_256_id	Number	Inner diameter for a #2-56 threaded heat set insert tube
threaded_insert_256_od	Number	Outer diameter for a #2-56 threaded heat set insert tube
threaded_insert_256_short_h	Number	Height for a short (3mm) #2-56 threaded heat set insert tube
threaded_insert_256_long_h	Number	Height for a long (5mm) #2-56 threaded heat set insert tube
screw_256_hole_diameter	Number	Unthreaded hole diameter for #2-56 screws
nut_256_slot_diameter	Number	Diameter for a #2-56 nut slot. Note: this is meant to be used in a six-sided cylinder, e.g. cylinder(d = nut_256_slot_diameter, h = nut_256_slot_height, $fn = 6)
nut_256_slot_height	Number	Height for a #2-56 nut slot
screw_440_hole_diameter	Number	Unthreaded hole diameter for #4-40 screws
nut_440_slot_diameter	Number	Diameter for a #4-40 nut slot. Note: this is meant to be used in a six-sided cylinder, e.g. cylinder(d = nut_440_slot_diameter, h = nut_440_slot_height, $fn = 6)
nut_440_slot_height	Number	Height for a #4-40 nut slot

Modules

Module	Description
threaded_insert_256_short()	Convenience module to create a tube for a short (Z=3mm) #2-56 threaded heat set insert. The inner diameter is threaded_insert_256_id, and the outer diameter is threaded_insert_256_od
threaded_insert_256_long()	Convenience module to create a tube for a long (Z=5mm) #2-56 threaded heat set insert. The inner diameter is threaded_insert_256_id, and the outer diameter is threaded_insert_256_od

utilities.scad

Usage:

include <openscad-library/utilities.scad>;

Modules

Module	Description
tube(height, outer_diameter, inner_diameter, fn = 60)	Convenience module for creating tubes.
PseudoObliqueCone(height, base_diameter, top_translate, fn = 60)	Create an oblique cone.