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PM_K-1 hardware: fix the 2 real import issues (crystal footprint + USB shield error)

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- Crystal Y1: footprint was a 4-pad type (Crystal_SMD_3225-4Pin) on a 2-pin symbol ->
  pads 3/4 had no symbol pin. Switched to Crystal_SMD_2012-2Pin to match (set to the
  chosen crystal's real footprint at BOM time; ground the case pads if 4-pad).
- USB-C J5: the library symbol's shield pin "S1" mismatches older KiCad footprints that
  name the shell pads "SH" -> "pad S1 not found" ERROR. Dropped the shield net from the
  schematic; the USB shell->chassis is now a layout-time tie (direct or 1Mohm||cap),
  which is version-independent and standard practice. Error resolved; ERC 0.

The remaining ~46 import warnings are HARMLESS: "no net for pad N" on intentionally
unconnected pins (spare RP2350 GPIOs, unused relay NO contacts, unused ULN2003/74LVC14
channels, IC NC pins) -- expected on any board, nothing to fix.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Me Here 2026-05-31 19:30:48 -05:00
parent 4fb3365f36
commit adc92c7c02
1 changed files with 5 additions and 2 deletions
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7
hardware/eda/circuits/board.py
View file

@ -124,7 +124,7 @@ rad=R(value="0"); cad=C("100nF"); p3v3+=rad[1]; rad[2]+=rp[44]; rp[44]+=cad[1];
for _ in range(6): dcp(p3v3)
for _ in range(2): dcp(dvdd)
rp[21]+=xin; rp[22]+=xout
xt=Part("Device","Crystal",value="12MHz",footprint="Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm")
xt=Part("Device","Crystal",value="12MHz",footprint="Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm") # 2-pin matches the 2-pin symbol (was a 4-pad fp -> Y1 pads 3/4 had no symbol pin). Set to your chosen crystal's footprint; if 4-pad, ground the case pads.
xin+=xt[1]; xout+=xt[2]; cx1=C("15pF"); cx2=C("15pF"); xin+=cx1[1]; cx1[2]+=gnd; xout+=cx2[1]; cx2[2]+=gnd
FL=mk("W25Q128JVS",[Pin(num=1,name="CS",func=P.INPUT),Pin(num=2,name="IO1",func=P.BIDIR),Pin(num=3,name="IO2",func=P.BIDIR),
Pin(num=4,name="GND",func=P.PWRIN),Pin(num=5,name="IO0",func=P.BIDIR),Pin(num=6,name="CLK",func=P.INPUT),
@ -303,7 +303,10 @@ for pin,net in {1:aout_hot,2:gnd,3:aout_cold,4:chassis,5:ain_hot,6:gnd,7:ain_col
j5=hdr("Conn_01x08","Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical")
for pin,net in {1:mo_a,2:mo_b,3:mi_a,4:mi_b,5:mt_a,6:mt_b,7:p5,8:gnd}.items(): j5[pin]+=net
j1=Part("Connector","USB_C_Receptacle",footprint="Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12")
j1["VBUS"]+=vbus; j1["GND"]+=gnd; j1["SHIELD"]+=chassis; j1["D+"]+=usb_dp_c; j1["D-"]+=usb_dm_c
j1["VBUS"]+=vbus; j1["GND"]+=gnd; j1["D+"]+=usb_dp_c; j1["D-"]+=usb_dm_c
# USB shell/shield -> chassis is tied at LAYOUT (the symbol's shield pin "S1" mismatches older
# KiCad footprints that name the shell pads "SH" -> would error on import). Ground the shell to
# CHASSIS in Pcbnew directly, or via the usual 1Mohm || small-cap.
rc1=R(value="5.1k"); rc2=R(value="5.1k"); j1["CC1"]+=rc1[1]; rc1[2]+=gnd; j1["CC2"]+=rc2[1]; rc2[2]+=gnd
ESD=mk("USBLC6-2SC6",[Pin(num=1,name="IO1",func=P.PASSIVE),Pin(num=2,name="GND",func=P.PWRIN),Pin(num=3,name="IO2",func=P.PASSIVE),
Pin(num=4,name="IO2b",func=P.PASSIVE),Pin(num=5,name="VBUS",func=P.PASSIVE),Pin(num=6,name="IO1b",func=P.PASSIVE)],fp="Package_TO_SOT_SMD:SOT-23-6")