sinara-hw/DIO_SMA_Shim
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add SMA_IDC_Adapter Shim Design

Browse Source 
- Reorganize the file structure
- Update KiCad and FreeCad version
This commit is contained in:
linuswck 2025-05-26 15:49:21 +08:00
parent 3563b5bce0
commit 88443d8263
15 changed files with 32257 additions and 175931 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
README.md
View File

@ -1,11 +1,19 @@
# Insulating Shim for DIO_SMA and TTL_SMA
This repository contains the design and mesh files for a 3D-printable plastic shim designed to be inserted between the front panel and the DIO_SMA or TTL_SMA card, preventing a possible short between the front panel and the SMA connector ground.
# Insulating Shim for DIO_SMA and TTL_SMA
This repository contains the designs of the electrical insulation shim for sinara-hw [DIO_SMA](https://github.com/sinara-hw/DIO_SMA) and [SMA_IDC_Adapter](https://github.com/sinara-hw/SMA_IDC_Adapter). This can prevent an electrical short between the front panel and the SMA connectors' ground. The design can be 3D printed or manufactured with a Mylar/PET electrical insulation sheet.
Note: SMA_IDC_Adapter rev v1.0 and DIO_SMA rev < 1.4.3 shares the same insulating shim design.
## Printing Instrucitons
## 3D Printing Instructions
The shims are best printed on a FDM 3D printer, with nylon filament.
Use 0.15mm layer height, and the shim should be printed with 2 layers.
Use 0.15 mm layer height, and the shim should be printed with 2 layers.
To ensure success when printing nylon, it is strongly advised to bake dry the nylon filament in 80 dec C for 4-6 hours before printing. Keep the filament in a dry environment when printing, and re-bake the filament if the extruded plastic contains bubbles.
To ensure success when printing nylon, it is strongly advised to bake dry the nylon filament in 80 °C for 4-6 hours before printing. Keep the filament in a dry environment when printing, and re-bake the filament if the extruded plastic contains bubbles.
As the shim design contains fine details that need to be adhered well to the print surface, a print surface adhesion solution is highly recommended. A mixture of 70g of Polyvinylpyrrolidone (PVP) K-30 and 30g of Polyvinyl alcohol (PVA) dissoved in 500mL of 50% isopropyl alcohol makes for a good print surface adhesive. Apply the adhesive to a Polyetherimide (PEI) print surface before each print to maximize the yield of the printed shims.
As the shim design contains fine details that need to be adhered well to the print surface, a print surface adhesion solution is highly recommended. A mixture of 70 g of Polyvinylpyrrolidone (PVP) K-30 and 30 g of Polyvinyl alcohol (PVA) dissolved in 500 ml of 50% isopropyl alcohol makes for a good print surface adhesive. Apply the adhesive to a Polyetherimide (PEI) print surface before each print to maximize the yield of the printed shims.
## Mylar/PET Electrical Insulation Sheet
Alternatively, an insulation sheet with hole cutouts can be manufactured. The insulation materials should be bendable, non-flammable and non-conductive. Materials like Mylar / PET are suitable for this application. Recommended thickness for the insulation sheet is < 0.15 mm.

167929
cad/DIO_SMA_Complete_Assembly.step
View File

File diff suppressed because it is too large Load Diff

BIN
cad/DIO_SMA_Shim.stl
View File

Binary file not shown.

36455
cad/DIO_SMA_Shim/DIO_SMA_Shim.kicad_pcb
View File

File diff suppressed because it is too large Load Diff

92
cad/DIO_SMA_Shim/DIO_SMA_Shim.kicad_pro
View File

@ -3,14 +3,17 @@
"3dviewports": [],
"design_settings": {
"defaults": {
"board_outline_line_width": 0.09999999999999999,
"copper_line_width": 0.19999999999999998,
"apply_defaults_to_fp_fields": false,
"apply_defaults_to_fp_shapes": false,
"apply_defaults_to_fp_text": false,
"board_outline_line_width": 0.1,
"copper_line_width": 0.2,
"copper_text_italic": false,
"copper_text_size_h": 1.5,
"copper_text_size_v": 1.5,
"copper_text_thickness": 0.3,
"copper_text_upright": false,
"courtyard_line_width": 0.049999999999999996,
"courtyard_line_width": 0.05,
"dimension_precision": 4,
"dimension_units": 3,
"dimensions": {
@ -21,7 +24,7 @@
"text_position": 0,
"units_format": 1
},
"fab_line_width": 0.09999999999999999,
"fab_line_width": 0.1,
"fab_text_italic": false,
"fab_text_size_h": 1.0,
"fab_text_size_v": 1.0,
@ -60,15 +63,20 @@
"copper_edge_clearance": "error",
"copper_sliver": "warning",
"courtyards_overlap": "error",
"creepage": "error",
"diff_pair_gap_out_of_range": "error",
"diff_pair_uncoupled_length_too_long": "error",
"drill_out_of_range": "error",
"duplicate_footprints": "warning",
"extra_footprint": "warning",
"footprint": "error",
"footprint_filters_mismatch": "ignore",
"footprint_symbol_mismatch": "warning",
"footprint_type_mismatch": "ignore",
"hole_clearance": "error",
"hole_near_hole": "error",
"hole_to_hole": "error",
"holes_co_located": "warning",
"invalid_outline": "error",
"isolated_copper": "warning",
"item_on_disabled_layer": "error",
@ -78,9 +86,11 @@
"lib_footprint_mismatch": "warning",
"malformed_courtyard": "error",
"microvia_drill_out_of_range": "error",
"mirrored_text_on_front_layer": "warning",
"missing_courtyard": "ignore",
"missing_footprint": "warning",
"net_conflict": "warning",
"nonmirrored_text_on_back_layer": "warning",
"npth_inside_courtyard": "ignore",
"padstack": "warning",
"pth_inside_courtyard": "ignore",
@ -92,10 +102,13 @@
"solder_mask_bridge": "error",
"starved_thermal": "error",
"text_height": "warning",
"text_on_edge_cuts": "error",
"text_thickness": "warning",
"through_hole_pad_without_hole": "error",
"too_many_vias": "error",
"track_angle": "error",
"track_dangling": "warning",
"track_segment_length": "error",
"track_width": "error",
"tracks_crossing": "error",
"unconnected_items": "error",
@ -108,17 +121,18 @@
"min_clearance": 0.0,
"min_connection": 0.0,
"min_copper_edge_clearance": 0.0,
"min_groove_width": 0.0,
"min_hole_clearance": 0.25,
"min_hole_to_hole": 0.25,
"min_microvia_diameter": 0.19999999999999998,
"min_microvia_drill": 0.09999999999999999,
"min_microvia_diameter": 0.2,
"min_microvia_drill": 0.1,
"min_resolved_spokes": 2,
"min_silk_clearance": 0.0,
"min_text_height": 0.7999999999999999,
"min_text_height": 0.8,
"min_text_thickness": 0.08,
"min_through_hole_diameter": 0.3,
"min_track_width": 0.0,
"min_via_annular_width": 0.09999999999999999,
"min_via_annular_width": 0.1,
"min_via_diameter": 0.5,
"solder_mask_clearance": 0.0,
"solder_mask_min_width": 0.0,
@ -127,48 +141,86 @@
},
"teardrop_options": [
{
"td_allow_use_two_tracks": true,
"td_curve_segcount": 5,
"td_on_pad_in_zone": false,
"td_onpadsmd": true,
"td_onpthpad": true,
"td_onroundshapesonly": false,
"td_onsmdpad": true,
"td_ontrackend": false,
"td_onviapad": true
"td_onvia": true
}
],
"teardrop_parameters": [
{
"td_curve_segcount": 0,
"td_allow_use_two_tracks": true,
"td_curve_segcount": 1,
"td_height_ratio": 1.0,
"td_length_ratio": 0.5,
"td_maxheight": 2.0,
"td_maxlen": 1.0,
"td_on_pad_in_zone": false,
"td_target_name": "td_round_shape",
"td_width_to_size_filter_ratio": 0.9
},
{
"td_curve_segcount": 0,
"td_allow_use_two_tracks": true,
"td_curve_segcount": 1,
"td_height_ratio": 1.0,
"td_length_ratio": 0.5,
"td_maxheight": 2.0,
"td_maxlen": 1.0,
"td_on_pad_in_zone": false,
"td_target_name": "td_rect_shape",
"td_width_to_size_filter_ratio": 0.9
},
{
"td_curve_segcount": 0,
"td_allow_use_two_tracks": true,
"td_curve_segcount": 1,
"td_height_ratio": 1.0,
"td_length_ratio": 0.5,
"td_maxheight": 2.0,
"td_maxlen": 1.0,
"td_on_pad_in_zone": false,
"td_target_name": "td_track_end",
"td_width_to_size_filter_ratio": 0.9
}
],
"track_widths": [],
"tuning_pattern_settings": {
"diff_pair_defaults": {
"corner_radius_percentage": 80,
"corner_style": 1,
"max_amplitude": 1.0,
"min_amplitude": 0.2,
"single_sided": false,
"spacing": 1.0
},
"diff_pair_skew_defaults": {
"corner_radius_percentage": 80,
"corner_style": 1,
"max_amplitude": 1.0,
"min_amplitude": 0.2,
"single_sided": false,
"spacing": 0.6
},
"single_track_defaults": {
"corner_radius_percentage": 80,
"corner_style": 1,
"max_amplitude": 1.0,
"min_amplitude": 0.2,
"single_sided": false,
"spacing": 0.6
}
},
"via_dimensions": [],
"zones_allow_external_fillets": false
},
"ipc2581": {
"dist": "",
"distpn": "",
"internal_id": "",
"mfg": "",
"mpn": ""
},
"layer_pairs": [],
"layer_presets": [],
"viewports": []
},
@ -182,7 +234,7 @@
},
"meta": {
"filename": "DIO_SMA_Shim.kicad_pro",
"version": 1
"version": 3
},
"net_settings": {
"classes": [
@ -197,6 +249,7 @@
"microvia_drill": 0.1,
"name": "Default",
"pcb_color": "rgba(0, 0, 0, 0.000)",
"priority": 2147483647,
"schematic_color": "rgba(0, 0, 0, 0.000)",
"track_width": 0.25,
"via_diameter": 0.8,
@ -205,7 +258,7 @@
}
],
"meta": {
"version": 3
"version": 4
},
"net_colors": null,
"netclass_assignments": null,
@ -216,8 +269,11 @@
"gencad": "",
"idf": "",
"netlist": "",
"plot": "",
"pos_files": "",
"specctra_dsn": "",
"step": "DIO_SMA_Shim_for_v1_4_3.step",
"svg": "",
"vrml": ""
},
"page_layout_descr_file": ""

BIN
cad/DIO_SMA_Complete_Assembly.FCStd → cad/DIO_SMA_Shim/Freecad/DIO_SMA_Complete_Assembly.FCStd
View File

Binary file not shown.

BIN
cad/IDC_SMA_Shim/Freecad/IDC_SMA_v1_0.FCStd Normal file
View File

Binary file not shown.

2080
cad/IDC_SMA_Shim/IDC_SMA_Shim.kicad_pcb Normal file
View File

File diff suppressed because it is too large Load Diff

285
cad/IDC_SMA_Shim/IDC_SMA_Shim.kicad_pro Normal file
View File

@ -0,0 +1,285 @@
{
"board": {
"3dviewports": [],
"design_settings": {
"defaults": {
"apply_defaults_to_fp_fields": false,
"apply_defaults_to_fp_shapes": false,
"apply_defaults_to_fp_text": false,
"board_outline_line_width": 0.05,
"copper_line_width": 0.2,
"copper_text_italic": false,
"copper_text_size_h": 1.5,
"copper_text_size_v": 1.5,
"copper_text_thickness": 0.3,
"copper_text_upright": false,
"courtyard_line_width": 0.05,
"dimension_precision": 4,
"dimension_units": 3,
"dimensions": {
"arrow_length": 1270000,
"extension_offset": 500000,
"keep_text_aligned": true,
"suppress_zeroes": false,
"text_position": 0,
"units_format": 1
},
"fab_line_width": 0.1,
"fab_text_italic": false,
"fab_text_size_h": 1.0,
"fab_text_size_v": 1.0,
"fab_text_thickness": 0.15,
"fab_text_upright": false,
"other_line_width": 0.1,
"other_text_italic": false,
"other_text_size_h": 1.0,
"other_text_size_v": 1.0,
"other_text_thickness": 0.15,
"other_text_upright": false,
"pads": {
"drill": 0.762,
"height": 1.524,
"width": 1.524
},
"silk_line_width": 0.1,
"silk_text_italic": false,
"silk_text_size_h": 1.0,
"silk_text_size_v": 1.0,
"silk_text_thickness": 0.1,
"silk_text_upright": false,
"zones": {
"min_clearance": 0.5
}
},
"diff_pair_dimensions": [],
"drc_exclusions": [],
"meta": {
"version": 2
},
"rule_severities": {
"annular_width": "error",
"clearance": "error",
"connection_width": "warning",
"copper_edge_clearance": "error",
"copper_sliver": "warning",
"courtyards_overlap": "error",
"creepage": "error",
"diff_pair_gap_out_of_range": "error",
"diff_pair_uncoupled_length_too_long": "error",
"drill_out_of_range": "error",
"duplicate_footprints": "warning",
"extra_footprint": "warning",
"footprint": "error",
"footprint_filters_mismatch": "ignore",
"footprint_symbol_mismatch": "warning",
"footprint_type_mismatch": "ignore",
"hole_clearance": "error",
"hole_near_hole": "error",
"hole_to_hole": "error",
"holes_co_located": "warning",
"invalid_outline": "error",
"isolated_copper": "warning",
"item_on_disabled_layer": "error",
"items_not_allowed": "error",
"length_out_of_range": "error",
"lib_footprint_issues": "warning",
"lib_footprint_mismatch": "warning",
"malformed_courtyard": "error",
"microvia_drill_out_of_range": "error",
"mirrored_text_on_front_layer": "warning",
"missing_courtyard": "ignore",
"missing_footprint": "warning",
"net_conflict": "warning",
"nonmirrored_text_on_back_layer": "warning",
"npth_inside_courtyard": "ignore",
"padstack": "warning",
"pth_inside_courtyard": "ignore",
"shorting_items": "error",
"silk_edge_clearance": "warning",
"silk_over_copper": "warning",
"silk_overlap": "warning",
"skew_out_of_range": "error",
"solder_mask_bridge": "error",
"starved_thermal": "error",
"text_height": "warning",
"text_on_edge_cuts": "error",
"text_thickness": "warning",
"through_hole_pad_without_hole": "error",
"too_many_vias": "error",
"track_angle": "error",
"track_dangling": "warning",
"track_segment_length": "error",
"track_width": "error",
"tracks_crossing": "error",
"unconnected_items": "error",
"unresolved_variable": "error",
"via_dangling": "warning",
"zones_intersect": "error"
},
"rules": {
"max_error": 0.005,
"min_clearance": 0.0,
"min_connection": 0.0,
"min_copper_edge_clearance": 0.5,
"min_groove_width": 0.0,
"min_hole_clearance": 0.25,
"min_hole_to_hole": 0.25,
"min_microvia_diameter": 0.2,
"min_microvia_drill": 0.1,
"min_resolved_spokes": 2,
"min_silk_clearance": 0.0,
"min_text_height": 0.8,
"min_text_thickness": 0.08,
"min_through_hole_diameter": 0.3,
"min_track_width": 0.0,
"min_via_annular_width": 0.1,
"min_via_diameter": 0.5,
"solder_mask_to_copper_clearance": 0.0,
"use_height_for_length_calcs": true
},
"teardrop_options": [
{
"td_onpthpad": true,
"td_onroundshapesonly": false,
"td_onsmdpad": true,
"td_ontrackend": false,
"td_onvia": true
}
],
"teardrop_parameters": [
{
"td_allow_use_two_tracks": true,
"td_curve_segcount": 0,
"td_height_ratio": 1.0,
"td_length_ratio": 0.5,
"td_maxheight": 2.0,
"td_maxlen": 1.0,
"td_on_pad_in_zone": false,
"td_target_name": "td_round_shape",
"td_width_to_size_filter_ratio": 0.9
},
{
"td_allow_use_two_tracks": true,
"td_curve_segcount": 0,
"td_height_ratio": 1.0,
"td_length_ratio": 0.5,
"td_maxheight": 2.0,
"td_maxlen": 1.0,
"td_on_pad_in_zone": false,
"td_target_name": "td_rect_shape",
"td_width_to_size_filter_ratio": 0.9
},
{
"td_allow_use_two_tracks": true,
"td_curve_segcount": 0,
"td_height_ratio": 1.0,
"td_length_ratio": 0.5,
"td_maxheight": 2.0,
"td_maxlen": 1.0,
"td_on_pad_in_zone": false,
"td_target_name": "td_track_end",
"td_width_to_size_filter_ratio": 0.9
}
],
"track_widths": [],
"tuning_pattern_settings": {
"diff_pair_defaults": {
"corner_radius_percentage": 80,
"corner_style": 1,
"max_amplitude": 1.0,
"min_amplitude": 0.2,
"single_sided": false,
"spacing": 1.0
},
"diff_pair_skew_defaults": {
"corner_radius_percentage": 80,
"corner_style": 1,
"max_amplitude": 1.0,
"min_amplitude": 0.2,
"single_sided": false,
"spacing": 0.6
},
"single_track_defaults": {
"corner_radius_percentage": 80,
"corner_style": 1,
"max_amplitude": 1.0,
"min_amplitude": 0.2,
"single_sided": false,
"spacing": 0.6
}
},
"via_dimensions": [],
"zones_allow_external_fillets": false
},
"ipc2581": {
"dist": "",
"distpn": "",
"internal_id": "",
"mfg": "",
"mpn": ""
},
"layer_pairs": [],
"layer_presets": [],
"viewports": []
},
"boards": [],
"cvpcb": {
"equivalence_files": []
},
"libraries": {
"pinned_footprint_libs": [],
"pinned_symbol_libs": []
},
"meta": {
"filename": "IDC_SMA_Shim.kicad_pro",
"version": 3
},
"net_settings": {
"classes": [
{
"bus_width": 12,
"clearance": 0.2,
"diff_pair_gap": 0.25,
"diff_pair_via_gap": 0.25,
"diff_pair_width": 0.2,
"line_style": 0,
"microvia_diameter": 0.3,
"microvia_drill": 0.1,
"name": "Default",
"pcb_color": "rgba(0, 0, 0, 0.000)",
"priority": 2147483647,
"schematic_color": "rgba(0, 0, 0, 0.000)",
"track_width": 0.2,
"via_diameter": 0.6,
"via_drill": 0.3,
"wire_width": 6
}
],
"meta": {
"version": 4
},
"net_colors": null,
"netclass_assignments": null,
"netclass_patterns": []
},
"pcbnew": {
"last_paths": {
"gencad": "",
"idf": "",
"netlist": "",
"plot": "",
"pos_files": "",
"specctra_dsn": "",
"step": "",
"svg": "",
"vrml": ""
},
"page_layout_descr_file": ""
},
"schematic": {
"legacy_lib_dir": "",
"legacy_lib_list": []
},
"sheets": [],
"text_variables": {}
}

7
cad/README.md
View File

@ -1,4 +1,3 @@
# Shim CAD Files for Sinara-hw DIO-SMA Board
- Designed for Sinara-hw DIO-SMA v1_4_3
- Assembly File is drawn in FreeCad 0.21.2
- Shim is drawn in KiCad 7
# Shim CAD Files for Sinara-hw DIO-SMA and SMA_IDC_Adapter Board
- Assembly File is drawn in FreeCad 1.0
- Shim is drawn in KiCad 9.0

BIN
drawings/DIO_SMA_Shim_v1_4_3_Drawings.pdf Normal file
View File

Binary file not shown.

BIN
drawings/IDC_SMA_Shim_v1_0_Drawings.pdf Normal file
View File

Binary file not shown.

BIN
mesh/DIO_SMA.3mf
View File

Binary file not shown.

0
cad/DIO_SMA_Shim.step → step/DIO_SMA_v1_4_3_Shim.step
View File

1320
step/IDC_SMA_v1_0_Shim.step Normal file
View File

File diff suppressed because it is too large Load Diff