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# Henry's Macropad
![image](hackpad.png)
A macropad for common keybinds I use during CAD, programming, and art!
### BOM:
- 1x Seeed Studio XIAO SAMD21 (XIAO-Generic-Thruhole-14P-2.54-21X17.8MM)
- 1x PCB (PCB)
- 1x OLED_128x64 (SSD1306 128x64 OLED)
- 15x Keyswitch (SW_Cherry_MX_1.00u_PCB)
- 17x Diodes
- 10x WS2812B LEDs (LED_WS2812B)
### Credits!
- Hackclub Inside Silkscreen based off the Hackclub Inside sticker! (redrawn because of strange converter issues with the original)
- PCB designed in KiCad 8.0!
- Case CAD created in OnShape! See it [here](https://cad.onshape.com/documents/438be41ae666356798ec8417/w/c836207d4d537bed51863fed/e/56cbb681866eb12dbab233d4?renderMode=0&uiState=6718649bb86ce562fff9f6c5)!
- Programming done with KMK!
- Image put together in Google Slides (lol)

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import board
import digitalio
import busio
from kmk.kmk_keyboard import KMKKeyboard
from kmk.keys import KC
from kmk.extensions.media_keys import MediaKeys
from kmk.scanners import DiodeOrientation
from kmk.extensions.led import RGB
from kmk.extensions.display import Display, TextEntry, ImageEntry
from kmk.extensions.display.builtin import BuiltInDisplay
from adafruit_ssd1306 import SSD1306_I2C
from neopixel import NeoPixel
#init
keyboard = KMKKeyboard()
keyboard.col_pins = (board.D3, board.D10, board.D9, board.D8, board.D7)
keyboard.row_pins = (board.D2, board.D1, board.D0)
keyboard.diode_orientation = DiodeOrientation.COL2ROW
#keymap
keyboard.keymap = [
[KC.AUDIO_MUTE, KC.MEDIA_PREV_TRACK, KC.MEDIA_PLAY_PAUSE, KC.MEDIA_NEXT_TRACK, KC.LALT(KC.F4)],
[ KC.Q, KC.D, KC.C, KC.G, KC.G],
[ KC.E, KC.T, KC.B, KC.I, KC.B],
]
keyboard.extensions.append(MediaKeys())
#LED shenanigans
pixels_pin = board.D6
pixels_num = 10
pixels = NeoPixel(pixels_pin, pixels_num, brightness=0.5, auto_write=False)
keyboard.extensions.append(RGB(pixel_pin=pixels_pin, num_pixels=pixels_num))
def update_pixels():
pixels[0] = (255, 193, 14)
pixels[1] = (83, 255, 15)
pixels[2] = (247, 15, 255)
for i in range(3, pixels_num):
pixels[i] = (i * 40 % 255, 255 - (i * 40 % 255), (i * 20 % 255))
pixels.show()
#oled
i2c_bus = busio.I2C(board.SCL, board.SDA)
oled = SSD1306_I2C(i2c=i2c_bus)
driver = BuiltInDisplay(
display=board.DISPLAY,
sleep_command=0xAE,
wake_command=0xAF
)
display = Display(
display=driver,
width=128,
height=64,
brightness=0.8,
)
keyboard.extensions.append(display)
def display_oled():
oled.fill(0)
oled.text("among us sus", 0, 0, 1)
oled.show()
display.entries = [
TextEntry(text="among us sus", x=0, y=0),
]
@keyboard.timer(50)
def periodic():
display_oled()
update_pixels()
keyboard.before_matrix_scan = periodic
if __name__ == '__main__':
keyboard.go()

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{
"board": {
"active_layer": 44,
"active_layer_preset": "All Layers",
"auto_track_width": true,
"hidden_netclasses": [],
"hidden_nets": [],
"high_contrast_mode": 0,
"net_color_mode": 1,
"opacity": {
"images": 0.6,
"pads": 1.0,
"tracks": 1.0,
"vias": 1.0,
"zones": 0.6
},
"selection_filter": {
"dimensions": true,
"footprints": true,
"graphics": true,
"keepouts": true,
"lockedItems": false,
"otherItems": true,
"pads": true,
"text": true,
"tracks": true,
"vias": true,
"zones": true
},
"visible_items": [
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],
"visible_layers": "fffffff_ffffffff",
"zone_display_mode": 0
},
"git": {
"repo_password": "",
"repo_type": "",
"repo_username": "",
"ssh_key": ""
},
"meta": {
"filename": "HackPad - HenryLi-0.kicad_prl",
"version": 3
},
"project": {
"files": []
}
}

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{
"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": {
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"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",
"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_symbol_mismatch": "warning",
"footprint_type_mismatch": "ignore",
"hole_clearance": "error",
"hole_near_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",
"missing_courtyard": "ignore",
"missing_footprint": "warning",
"net_conflict": "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_thickness": "warning",
"through_hole_pad_without_hole": "error",
"too_many_vias": "error",
"track_dangling": "warning",
"track_width": "error",
"tracks_crossing": "error",
"unconnected_items": "error",
"unresolved_variable": "error",
"via_dangling": "warning",
"zones_intersect": "error"
},
"rules": {
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"min_clearance": 0.0,
"min_connection": 0.0,
"min_copper_edge_clearance": 0.5,
"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": 0.005,
"use_height_for_length_calcs": true
},
"teardrop_options": [
{
"td_onpadsmd": true,
"td_onroundshapesonly": false,
"td_ontrackend": false,
"td_onviapad": 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_presets": [],
"viewports": []
},
"boards": [],
"cvpcb": {
"equivalence_files": []
},
"erc": {
"erc_exclusions": [],
"meta": {
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},
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"bus_entry_needed": "error",
"bus_to_bus_conflict": "error",
"bus_to_net_conflict": "error",
"conflicting_netclasses": "error",
"different_unit_footprint": "error",
"different_unit_net": "error",
"duplicate_reference": "error",
"duplicate_sheet_names": "error",
"endpoint_off_grid": "warning",
"extra_units": "error",
"global_label_dangling": "warning",
"hier_label_mismatch": "error",
"label_dangling": "error",
"lib_symbol_issues": "warning",
"missing_bidi_pin": "warning",
"missing_input_pin": "warning",
"missing_power_pin": "error",
"missing_unit": "warning",
"multiple_net_names": "warning",
"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",
"similar_labels": "warning",
"simulation_model_issue": "ignore",
"unannotated": "error",
"unit_value_mismatch": "error",
"unresolved_variable": "error",
"wire_dangling": "error"
}
},
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},
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"filename": "HackPad - HenryLi-0.kicad_pro",
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},
"net_settings": {
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"name": "Default",
"pcb_color": "rgba(0, 0, 0, 0.000)",
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"wire_width": 6
}
],
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},
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},
"pcbnew": {
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"idf": "",
"netlist": "",
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"pos_files": "",
"specctra_dsn": "",
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},
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"string_delimiter": "\""
},
"bom_presets": [],
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"fields_ordered": [
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"label": "Reference",
"name": "Reference",
"show": true
},
{
"group_by": true,
"label": "Value",
"name": "Value",
"show": true
},
{
"group_by": false,
"label": "Datasheet",
"name": "Datasheet",
"show": true
},
{
"group_by": false,
"label": "Footprint",
"name": "Footprint",
"show": true
},
{
"group_by": false,
"label": "Qty",
"name": "${QUANTITY}",
"show": true
},
{
"group_by": true,
"label": "DNP",
"name": "${DNP}",
"show": true
}
],
"filter_string": "",
"group_symbols": true,
"name": "Grouped By Value",
"sort_asc": true,
"sort_field": "Reference"
},
"connection_grid_size": 50.0,
"drawing": {
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"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
},
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"legacy_lib_list": [],
"meta": {
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},
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"page_layout_descr_file": "",
"plot_directory": "",
"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": [
[
"3a1f6540-c8fc-4774-a184-2e8208094f67",
"Root"
]
],
"text_variables": {}
}

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Designator,Footprint,Quantity,Value,LCSC Part #
"D1, D17, D18, D19, D20, D21, D22, D23, D24, D25",LED_WS2812B,10,LED_WS2812B,
"D10, D11, D12, D13, D14, D15, D16, D2, D26, D27, D3, D4, D5, D6, D7, D8, D9",Diode_DO-35,17,Diode,
J1,SSD1306 128x64 OLED,1,OLED_128x64,
"S1, S10, S11, S12, S13, S14, S15, S2, S3, S4, S5, S6, S7, S8, S9",SW_Cherry_MX_1.00u_PCB,15,Keyswitch,
U1,XIAO-Generic-Thruhole-14P-2.54-21X17.8MM,1,Seeed Studio XIAO SAMD21,
1 Designator Footprint Quantity Value LCSC Part #
2 D1, D17, D18, D19, D20, D21, D22, D23, D24, D25 LED_WS2812B 10 LED_WS2812B
3 D10, D11, D12, D13, D14, D15, D16, D2, D26, D27, D3, D4, D5, D6, D7, D8, D9 Diode_DO-35 17 Diode
4 J1 SSD1306 128x64 OLED 1 OLED_128x64
5 S1, S10, S11, S12, S13, S14, S15, S2, S3, S4, S5, S6, S7, S8, S9 SW_Cherry_MX_1.00u_PCB 15 Keyswitch
6 U1 XIAO-Generic-Thruhole-14P-2.54-21X17.8MM 1 Seeed Studio XIAO SAMD21

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