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base: erin:maybe-leds
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erin:main
erin:maybe-leds
erin:v3
erin:v2
erin:v1
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compare: erin:main
Branches Tags
erin:main
erin:maybe-leds
erin:v3
erin:v2
erin:v1

17 commits
maybe-leds ... main

Author SHA1 Message Date
ewin
d9c6cffbb8
update readme with an image and shit 2025-11-13 13:06:09 -05:00
ewin
2e72f8cbaf
oops 2025-11-13 10:58:45 -05:00
ewin
12f077e7a9
silkscreen tweaks 2025-11-05 17:31:44 -05:00
ewin
4a4e46eefd
pcb v3 2025-11-05 11:27:54 -05:00
ewin
407f5c9da1
uhh 2025-11-05 11:26:59 -05:00
ewin
66707bf080
update justfile to handle both PCBs 2025-11-05 11:25:21 -05:00
ewin
d8417db424
update original board to explicitly list mbk spacing 2025-11-05 11:25:05 -05:00
ewin
9d065eed8b
fix firmware repo link in readme 2025-11-05 11:18:40 -05:00
ewin
566af9e58f
add cfx-spaced version of the pcb 2025-11-05 11:18:24 -05:00
erin
36cc69000f derp 2025-10-19 05:15:58 +00:00
ewin
a093655f68
add note about case to readme 2025-10-18 17:41:22 -04:00
ewin
df66fcc9e2
tighter inside clearance this will work trust 2025-10-18 16:23:40 -04:00
ewin
5c443f9bef
make standoffs slightly shorter to reduce rattling against the outer lip 2025-10-18 16:19:50 -04:00
ewin
8e365bfdf1
clearance tweaks 2025-10-18 15:50:39 -04:00
ewin
7e5b95abf5
initial commit of case 2025-10-18 15:24:26 -04:00
ewin
59e20dc578
v2 2025-09-29 23:04:09 -04:00
ewin
3355bd1bcb
add missing mounting hole that can just chill here 2025-09-29 23:03:27 -04:00
14 changed files with 38229 additions and 7176 deletions
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2264
48ish_soldered.kicad_pcb
View file

File diff suppressed because it is too large Load diff

2
48ish_soldered.kicad_prl
View file

@ -1,6 +1,6 @@
{
"board": {
"active_layer": 0,
"active_layer": 7,
"active_layer_preset": "",
"auto_track_width": false,
"hidden_netclasses": [],

5
48ish_soldered.kicad_pro
View file

@ -440,6 +440,7 @@
"single_global_label": "ignore",
"unannotated": "error",
"unconnected_wire_endpoint": "warning",
"undefined_netclass": "error",
"unit_value_mismatch": "error",
"unresolved_variable": "error",
"wire_dangling": "error"
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294
48ish_soldered.kicad_sch
View file

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"net_not_bus_member": "warning",
"no_connect_connected": "warning",
"no_connect_dangling": "warning",
"pin_not_connected": "error",
"pin_not_driven": "error",
"pin_to_pin": "warning",
"power_pin_not_driven": "error",
"same_local_global_label": "warning",
"similar_label_and_power": "warning",
"similar_labels": "warning",
"similar_power": "warning",
"simulation_model_issue": "ignore",
"single_global_label": "ignore",
"unannotated": "error",
"unconnected_wire_endpoint": "warning",
"undefined_netclass": "error",
"unit_value_mismatch": "error",
"unresolved_variable": "error",
"wire_dangling": "error"
}
},
"libraries": {
"pinned_footprint_libs": [
"stuff"
],
"pinned_symbol_libs": [
"stuff"
]
},
"meta": {
"filename": "48ish_soldered_cfx.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": "/home/erin/Downloads/48ish-out",
"pos_files": "",
"specctra_dsn": "",
"step": "",
"svg": "",
"vrml": ""
},
"page_layout_descr_file": ""
},
"schematic": {
"annotate_start_num": 0,
"bom_export_filename": "${PROJECTNAME}.csv",
"bom_fmt_presets": [],
"bom_fmt_settings": {
"field_delimiter": ",",
"keep_line_breaks": false,
"keep_tabs": false,
"name": "CSV",
"ref_delimiter": ",",
"ref_range_delimiter": "",
"string_delimiter": "\""
},
"bom_presets": [],
"bom_settings": {
"exclude_dnp": false,
"fields_ordered": [
{
"group_by": false,
"label": "Reference",
"name": "Reference",
"show": true
},
{
"group_by": true,
"label": "Value",
"name": "Value",
"show": true
},
{
"group_by": false,
"label": "Qty",
"name": "${QUANTITY}",
"show": true
},
{
"group_by": false,
"label": "Description",
"name": "Description",
"show": true
},
{
"group_by": false,
"label": "JLCPCB Part Number",
"name": "JLCPCB Part Number",
"show": true
},
{
"group_by": true,
"label": "DNP",
"name": "${DNP}",
"show": true
},
{
"group_by": true,
"label": "Exclude from BOM",
"name": "${EXCLUDE_FROM_BOM}",
"show": true
},
{
"group_by": true,
"label": "Exclude from Board",
"name": "${EXCLUDE_FROM_BOARD}",
"show": true
},
{
"group_by": true,
"label": "Footprint",
"name": "Footprint",
"show": true
},
{
"group_by": false,
"label": "Datasheet",
"name": "Datasheet",
"show": true
},
{
"group_by": false,
"label": "Sim.Pins",
"name": "Sim.Pins",
"show": false
},
{
"group_by": false,
"label": "Sim.Device",
"name": "Sim.Device",
"show": false
},
{
"group_by": false,
"label": "#",
"name": "${ITEM_NUMBER}",
"show": false
}
],
"filter_string": "",
"group_symbols": true,
"include_excluded_from_bom": true,
"name": "",
"sort_asc": true,
"sort_field": "Reference"
},
"connection_grid_size": 50.0,
"drawing": {
"dashed_lines_dash_length_ratio": 12.0,
"dashed_lines_gap_length_ratio": 3.0,
"default_line_thickness": 6.0,
"default_text_size": 50.0,
"field_names": [],
"intersheets_ref_own_page": false,
"intersheets_ref_prefix": "",
"intersheets_ref_short": false,
"intersheets_ref_show": false,
"intersheets_ref_suffix": "",
"junction_size_choice": 3,
"label_size_ratio": 0.375,
"operating_point_overlay_i_precision": 3,
"operating_point_overlay_i_range": "~A",
"operating_point_overlay_v_precision": 3,
"operating_point_overlay_v_range": "~V",
"overbar_offset_ratio": 1.23,
"pin_symbol_size": 25.0,
"text_offset_ratio": 0.15
},
"legacy_lib_dir": "",
"legacy_lib_list": [],
"meta": {
"version": 1
},
"net_format_name": "",
"page_layout_descr_file": "",
"plot_directory": "",
"space_save_all_events": true,
"spice_current_sheet_as_root": false,
"spice_external_command": "spice \"%I\"",
"spice_model_current_sheet_as_root": true,
"spice_save_all_currents": false,
"spice_save_all_dissipations": false,
"spice_save_all_voltages": false,
"subpart_first_id": 65,
"subpart_id_separator": 0
},
"sheets": [
[
"e3c88f17-e431-4ad8-b491-c68f92a3599e",
"Root"
]
],
"text_variables": {}
}

15
Justfile
View file

@ -1,17 +1,22 @@
all: plot-zip positions
gerbers:
kicad-cli pcb export gerbers 48ish_soldered.kicad_pcb --board-plot-params -o 48ish_soldered_out
kicad-cli pcb export gerbers 48ish_soldered.kicad_pcb --board-plot-params -o 48ish_soldered_out/mbk
kicad-cli pcb export gerbers 48ish_soldered_cfx.kicad_pcb --board-plot-params -o 48ish_soldered_out/cfx
drills:
kicad-cli pcb export drill 48ish_soldered.kicad_pcb --excellon-separate-th -o 48ish_soldered_out
kicad-cli pcb export drill 48ish_soldered.kicad_pcb --excellon-separate-th -o 48ish_soldered_out/mbk
kicad-cli pcb export drill 48ish_soldered_cfx.kicad_pcb --excellon-separate-th -o 48ish_soldered_out/cfx
positions:
kicad-cli pcb export pos 48ish_soldered.kicad_pcb --format csv --units mm --side back --smd-only -o 48ish_soldered-bottom-pos.csv
kicad-cli pcb export pos 48ish_soldered.kicad_pcb --format csv --units mm --side back --smd-only -o 48ish_soldered_mbk-bottom-pos.csv
kicad-cli pcb export pos 48ish_soldered_cfx.kicad_pcb --format csv --units mm --side back --smd-only -o 48ish_soldered_cfx-bottom-pos.csv
# replace headers with what jlcpcb wants - see https://jlcpcb.com/help/article/How-to-generate-the-BOM-and-Centroid-file-from-KiCAD
sed -e 's/Ref/Designator/' -e 's/PosX/Mid X/' -e 's/PosY/Mid Y/' -e 's/Rot/Rotation/' -e 's/Side/Layer/' -i 48ish_soldered-bottom-pos.csv
sed -e 's/Ref/Designator/' -e 's/PosX/Mid X/' -e 's/PosY/Mid Y/' -e 's/Rot/Rotation/' -e 's/Side/Layer/' -i 48ish_soldered_mbk-bottom-pos.csv
sed -e 's/Ref/Designator/' -e 's/PosX/Mid X/' -e 's/PosY/Mid Y/' -e 's/Rot/Rotation/' -e 's/Side/Layer/' -i 48ish_soldered_cfx-bottom-pos.csv
plot: gerbers drills
plot-zip: gerbers drills
zip -FSr 48ish_soldered_out.zip 48ish_soldered_out
zip -FSr 48ish_soldered_mbk_out.zip 48ish_soldered_out/mbk
zip -FSr 48ish_soldered_cfx_out.zip 48ish_soldered_out/cfx

16
README.md
View file

@ -1,10 +1,12 @@
# 48ish
A wireless, low-profile 47/48-key keyboard PCB.
A wireless, low-profile, 47/48-key keyboard PCB for Kalih Choc v1 switches, with variants for 18x17mm (MBK) or 17x17mm (CFX) keycap spacing.
![a thin rectangular keyboard with keys organized in a 12 by 4 grid, the bottom middle two keys joined in a single small spacebar. the board is held up in one hand, and has blank keycaps in white, green, and blue.](images/47.png)
## production files
works with JLCPCB, haven't tried any other production houses, ymmv
production files are uploaded [with each release](https://git.ewin.moe/erin/48ish). works with JLCPCB, haven't tried any other production houses, ymmv
production outputs automated with `just` (`apt install just` etc) and `kicad-cli` (it came free with your fucking kicad)
@ -14,9 +16,17 @@ production outputs automated with `just` (`apt install just` etc) and `kicad-cli
- BOM: `48ish_soldered_bom.csv` (not generated by kicad Yet:tm:; includes specific JLCPCB part numbers, you may want to shop around for alternatives)
- Placements: `48ish_soldered-bottom-pos.csv` (generated by kicad, with column names manually edited to reflect [JLCPCB's requirements](https://jlcpcb.com/help/article/pick-place-file-for-pcb-assembly))
## that sounds complicated but i still want one
hit me up on fedi [@erin@tired.umbreon.online](https://tired.umbreon.online/@erin) and i'll maybe do a custom build for you, if shipping you things from the united states isn't too complicated
## case???
[here's a basic one](case). the rendered stl file is attached to the latest release
## firmware???
i wrote a zmk shield for this but dude i am not figuring out the zmk local build steps. go look at [the github repo for the shield firmware](https://github.com/ewwwin/zmk-shield-48ish) and grab the firmware from the latest github actions run, i do not care
i wrote a zmk shield for this but dude i am not figuring out the zmk local build steps. go look at [the github repo for the shield firmware](https://github.com/ewwwin/zmk-keyboard-48ish) and grab the firmware from the latest github actions run, i do not care
## acknowledgements

76
case/48ish_case.scad Normal file
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@ -0,0 +1,76 @@
$fn = 20;
baseplate_thickness = 2;
inner_clearance = 6.5; // space inside the case for the battery/mcu to occupy
pcb_thickness = 1.6; // thickness of the pcb
module roundsquare (size, r) {
translate([r, r]) minkowski() {
square([size.x-2*r, size.y-2*r]);
circle(r=r);
}
}
module shell () {
difference() {
// block
linear_extrude(baseplate_thickness + inner_clearance + pcb_thickness) {
translate([-1, -1]) roundsquare([214+1*2, 67+1*2], r=2+1);
}
// cut for shelf
translate([0, 0, baseplate_thickness + inner_clearance]) linear_extrude(pcb_thickness + 2) {
roundsquare([214, 67], r=2-0.25); // pcb r=2 but it's not exact
}
// cut for inner clearance
translate([0, 0, baseplate_thickness]) linear_extrude(inner_clearance + 10) {
translate([1, 1]) roundsquare([214 - 1 * 2, 67 - 1 * 2], r=1);
}
}
}
module standoffs () {
// for M2 3x3 standoffs
hole_diameter = 3;
hole_depth = 3 * 1.5;
wall_thickness = 1;
// offsets the top of the standoffs down from where the pcb will actually rest; this allows the screws to actually hold the pcb down against the outer lip of the case and prevent rattling if the pcb is not perfectly flat
standoff_top_face_offset = -0.25;
for (point = [
[17 + 18 * 0, 16.5 + 17 * 0],
[17 + 18 * 2, 16.5 + 17 * 2],
[17 + 18 * 4, 16.5 + 17 * 0],
[17 + 18 * 5, 16.5 + 17 * 2],
[17 + 18 * 6, 16.5 + 17 * 0],
[17 + 18 * 8, 16.5 + 17 * 2],
[17 + 18 * 10, 16.5 + 17 * 0],
]) {
translate([point.x, point.y, baseplate_thickness - 0.01]) difference() {
cylinder(h = inner_clearance + standoff_top_face_offset + .01, d = hole_diameter + 2*wall_thickness);
translate([0, 0, inner_clearance + standoff_top_face_offset + .1 - hole_depth]) cylinder(h = hole_depth + .02, d = hole_diameter); // hole inner - adjust for insert size
}
}
}
difference() {
shell();
translate([2, 65-.01, baseplate_thickness])
// cube([34, 2, 30]);
// cube([34, 5, 6]);
cube([18+17-2, 2, 30]);
// usb-c cutout
translate([17 + 18/2 - 9/2, 71, baseplate_thickness + inner_clearance - 6.5]) {
rotate([90, 0, 0]) linear_extrude(8) {
roundsquare([9, 3.75], r = 1.5);
}
}
// power switch cutout
translate([4, 71, baseplate_thickness + inner_clearance - 2]) {
rotate([90, 0, 0]) linear_extrude(8) {
roundsquare([6.5, 2], r = 0.5);
}
}
}
standoffs();

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226
stuff.pretty/Choc_v1_17x17mm_spacing.kicad_mod Normal file
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@ -0,0 +1,226 @@
(footprint "Choc_v1_17x17mm_spacing"
(version 20241229)
(generator "pcbnew")
(generator_version "9.0")
(layer "F.Cu")
(property "Reference" "SW13"
(at 0 0 0)
(layer "F.SilkS")
(hide yes)
(uuid "5b8b2509-cc48-47a4-8fce-ab86fcffde68")
(effects
(font
(size 1.27 1.27)
(thickness 0.15)
)
)
)
(property "Value" "SW_SPST"
(at 0 0 0)
(layer "F.SilkS")
(hide yes)
(uuid "aacfd6f5-65b7-4133-8281-45c322585029")
(effects
(font
(size 1.27 1.27)
(thickness 0.15)
)
)
)
(property "Datasheet" "~"
(at 0 0 0)
(layer "F.Fab")
(hide yes)
(uuid "2a52bd72-0c3f-48f2-a724-e8d669cfe14f")
(effects
(font
(size 1.27 1.27)
(thickness 0.15)
)
)
)
(property "Description" "Choc v1 keyswitch"
(at 0 0 0)
(layer "F.Fab")
(hide yes)
(uuid "60fcfa86-dd34-4fec-98c7-ae7cfcb9d8ee")
(effects
(font
(size 1.27 1.27)
(thickness 0.15)
)
)
)
(property "JLCPCB Part Number" ""
(at 0 0 0)
(unlocked yes)
(layer "F.Fab")
(hide yes)
(uuid "7c202ef6-551b-4cdd-9ae7-26d21269315b")
(effects
(font
(size 1 1)
(thickness 0.15)
)
)
)
(attr through_hole exclude_from_bom)
(fp_line
(start -8.5 -8.5)
(end 8.5 -8.5)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "7699333a-f4db-4625-a04f-ceb94bcace22")
)
(fp_line
(start -8.5 8.5)
(end -8.5 -8.5)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "84e98009-a36c-4a17-a569-fde4fbea482e")
)
(fp_line
(start -7 -6)
(end -7 -7)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "c3e13b08-e233-4954-86c1-a796d408a520")
)
(fp_line
(start -7 7)
(end -7 6)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "d1e7dd04-eabb-4c9c-9bd8-3860764a3590")
)
(fp_line
(start -7 7)
(end -6 7)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "49c30273-bb99-474a-8452-3e95b3920c2c")
)
(fp_line
(start -6 -7)
(end -7 -7)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "54c7fd19-7ce7-4c39-9f25-859237f52ffc")
)
(fp_line
(start 6 7)
(end 7 7)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "ede29a3f-a9a6-47df-836d-c4772ed880b1")
)
(fp_line
(start 7 -7)
(end 6 -7)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "65ba7540-2b09-40be-8697-21853845d68e")
)
(fp_line
(start 7 -7)
(end 7 -6)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "f1d0021a-165e-4889-aa81-e278d0d78cc6")
)
(fp_line
(start 7 6)
(end 7 7)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "c89ad502-74fd-4515-831a-e77ed3111cbc")
)
(fp_line
(start 8.5 -8.5)
(end 8.5 8.5)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "8210335c-d6a0-4308-8c53-57e96bf7ef0e")
)
(fp_line
(start 8.5 8.5)
(end -8.5 8.5)
(stroke
(width 0.15)
(type solid)
)
(layer "Dwgs.User")
(uuid "36a01b58-12db-413b-bdf4-8e7e60f5b51e")
)
(pad "" np_thru_hole circle
(at -5.5 0 180)
(size 1.7018 1.7018)
(drill 1.7018)
(layers "*.Cu" "*.Mask")
(uuid "5add7edf-3b4d-49b6-9b81-fda7ac714069")
)
(pad "" np_thru_hole circle
(at 0 0 180)
(size 3.429 3.429)
(drill 3.429)
(layers "*.Cu" "*.Mask")
(uuid "42fb6c34-34c0-481b-8207-70ca722ad0fb")
)
(pad "" np_thru_hole circle
(at 5.5 0 180)
(size 1.7018 1.7018)
(drill 1.7018)
(layers "*.Cu" "*.Mask")
(uuid "cb8a715d-8e12-4712-82bb-413e7d72aaf4")
)
(pad "1" thru_hole circle
(at -5 3.8 180)
(size 2.032 2.032)
(drill 1.27)
(layers "*.Cu" "*.Mask")
(remove_unused_layers no)
(uuid "6ef19e7b-3b30-4e26-bfe0-826067df6d4a")
)
(pad "2" thru_hole circle
(at 0 5.9 180)
(size 2.032 2.032)
(drill 1.27)
(layers "*.Cu" "*.Mask")
(remove_unused_layers no)
(uuid "5b307a43-4634-436d-b54b-63eed3a5e24c")
)
(embedded_fonts no)
)

2
stuff.pretty/Choc_v1.kicad_mod → stuff.pretty/Choc_v1_18x17mm_spacing.kicad_mod
View file

@ -1,4 +1,4 @@
(footprint "Choc_v1"
(footprint "Choc_v1_18x17mm_spacing"
(version 20241229)
(generator "pcbnew")
(generator_version "9.0")