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William RickertandClaude Opus 5 5e527bb7b9 Shift the right half's top two rows: 6 and F6 lead the right hand 
Resolves the ragged outer edge on both halves at once. Left drops to 34 keys
in six columns each five deep, with no orphans. Right goes to 41: six full
columns, then F12/=/]/Enter, then Bksp and backslash sharing the outer pinky
column instead of backslash sitting alone two columns out.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-08-27 15:09:21 -05:00

5.4 KiB
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1BoardSectionRefQtyValueMPNLCSCPackageJLCUnit USDNotes
2ALLMCUU11CH32L103C8T6CH32L103C8T6C22398291LQFP-48(7x7)Extended0.80MCU. Swap-compatible: STM32F103C8T6 = C8734 / Preferred / $1.44
3ALLMCUU213.3V LDO 500mART9013-33GB-MSC7434207SOT-23-5Extended0.06Alt basic: XC6206P332MR-G C5446 but only 200mA
4ALLMCUU31USB ESDUSBLC6-2SC6C2687116SOT-23-6Extended0.048on this board's own USB-C
5ALLMCUJ11USB-C 16PTYPE-C16PINC393939SMDExtended0.069upstream / device port
6ALLMCUJ21SWD header--1.27mm 4-pinConsigned0.00SWDIO=PA13 SWCLK=PA14 GND 3V3
7ALLMCUY118MHz crystalTAXM8M4RDBCCT2TC400090SMD3225-4PExtended0.14610pF load 250R ESR +/-10ppm. Satisfies both MCUs' USB PLL
8ALLMCUSW11Tactile RESETTS2306A 200gfC5363482SMD 3x2mmExtended0.062to NRST
9ALLMCUSW21Tactile BOOTTS2306A 200gfC5363482SMD 3x2mmExtended0.062BOOT0 to 3V3. Works for both boot paths
10ALLMCUC1-C55100nF 0402 X7R 16VCL05B104KO5NNNCC15250402Basic0.006VDD_1 VDD_2 VDD_3 VDDA NRST
11ALLMCUC614.7uF 0603 X5RCL10A475KO8NNNCC196660603Basic0.024bulk at MCU
12ALLMCUC711uF 0402 X5R 25VCL05A105KA5NQNCC529230402Basic0.014VDDA
13ALLMCUC8-C9210uF 0805 X5RCL21A106KAYNNNEC158500805Basic0.077LDO input and output
14ALLMCUC10-C11212pF 0402 C0GJLC basic library-0402Basic0.005MCU crystal load. 12pF assumes 10pF CL + ~4pF stray - verify vs stackup
15ALLMCUR1-R2222R 0402FRC0402F22R0TSC29299940402Extended0.0007USB D+/D- series. 0R (C17168 Basic) also acceptable
16ALLMCUR3-R425.1k 0402JLC basic library-0402Basic0.002USB-C CC1/CC2 pull-DOWN (Rd - device side)
17ALLMCUR511.5k 0402JLC basic library-0402Basic0.002*** SWAP-DEPENDENT *** D+ pull-up. POPULATE for STM32F103. DNF for CH32L103 (internal 1.5k via RB_UC_DEV_PU_EN)
18ALLMCUR6-R7210k 0402FRC0402F1002TSC257440402Basic0.003BOOT0 pulldown, BOOT1/PB2 pulldown
19HALF-LMatrixD1-D34341N4148W1N4148WC81598SOD-123Basic0.011Left half: 34 keys, six clean columns
20HALF-RMatrixD1-D41411N4148W1N4148WC81598SOD-123Basic0.011Right half: 41 keys
21HALF-L/RSplitR141100R 0402JLC basic library-0402Basic0.002Series on the SBU net between connector and MCU USART pin
22HALF-L/RSplitD-ESD1ESD 5V bidirectionalPESD5V0S1BAC2827694SOD-323Extended0.036On the SBU net - user-exposed signal going to a GPIO
23HALF-L/RSplitJ313-pin header DNFJST SH--Consigned0.02*** DNF INSURANCE *** VCC/GND/DATA fallback if SBU proves flaky (bad cables). 3 pads cost nothing
24HALF-L/RSplit--SBU1+SBU2 TIE----0.00Tie A8 and B8 together on the board. SBU is CROSSED in the cable, so this makes it orientation-proof and doubles the conductor
25NUMPADDNFJ1/U3/R3/R4/R50DO NOT POPULATE----0.00*** From the ALL block: numpad MCU has NO connector of its own. Its D+/D- route internally to hub downstream port 1. No connector = no ESD part and no CC resistors needed. Saves ~$0.19
26NUMPADMatrixD1-D25251N4148W1N4148WC81598SOD-123Basic0.01125 keys: 16 numpad (no Num key) + 9 nav
27NUMPADEncoderENC11EC11 detentedEC11L1525G01C2991196THTExtended1.27VOLUME - detented, which is what a stock EC11 already is. Occupies a 2u cell so a full-size knob fits. THT: hand-solder or JLC THT surcharge
28NUMPADHubU41USB2.0 4-port hubCH334RC4154405QSOP-16-150milExtended0.50Ports: 1=own MCU (internal FS) 2=left half 3=right half 4=spare
29NUMPADHubY2112MHz crystalX322512MSB4SIC9002SMD3225-4PBasic0.101CH334 has built-in load caps - verify internal value vs this 20pF CL crystal; fit DNF cap pads
30NUMPADHubC12-C143100nF 0402CL05B104KO5NNNCC15250402Basic0.006hub decoupling
31NUMPADHubC15110uF 0805CL21A106KAYNNNEC158500805Basic0.077hub bulk
32NUMPADHubJ41USB-C upstreamTYPE-C16PINC393939SMDExtended0.069to PC. This replaces J1 as the board's real upstream
33NUMPADHubJ5-J73USB-C downstreamTYPE-C16PINC393939SMDExtended0.069left half / right half / spare
34NUMPADHubU5-U73USB ESDUSBLC6-2SC6C2687116SOT-23-6Extended0.048one per downstream port
35NUMPADHubU8-U103Ideal diode / OCPCH213KC5456874SOT-23-3Extended0.073VBUS protection per downstream port. CH334R has no port power switching
36NUMPADHubR8-R13656k 0402FRC0402F5602TSC29068750402Extended0.0018Rp pull-UPS on CC1/CC2 of each downstream port - host side. NOT 5.1k
37NUMPADSBU--SBU PASS-THROUGH----0.00*** Passive trace *** Tie SBU1+SBU2 on J5 (left half) and on J6 (right half), then connect the two nets together. Carries QMK split_common UART between the halves. Numpad MCU does NOT touch this net
38NUMPADSBUD-ESD22ESD 5V bidirectionalPESD5V0S1BAC2827694SOD-323Extended0.036One per half-port SBU net
39HALF-LSwitchesSW-34MX hotswap socketCPG151101S11C41430893SMD 14.5x5.9mmExtended0.037BOTTOM SIDE. Alt: C49352235
40HALF-RSwitchesSW-41MX hotswap socketCPG151101S11C41430893SMD 14.5x5.9mmExtended0.037BOTTOM SIDE. Alt: C49352235
41NUMPADSwitchesSW-25MX hotswap socketCPG151101S11C41430893SMD 14.5x5.9mmExtended0.037One per key. BOTTOM SIDE
42NOTEAssembly--SINGLE-SIDED-----Put ALL SMD on the BOTTOM: sockets, MCU, passives, diodes, and any reverse-mount SK6812MINI-E. Top face bare except switch holes. Keeps JLC to one assembly pass
43NOTEMechanical--PLATE REQUIRED-----Hotswap needs a switch plate or socket pads tear off during switch insertion. FR4 plate = just another JLC board
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