Retro LCD Dashboard Design

Severed mounting hole connections

0:37

Started: 4.4 Sever any net connections to mounting holes.

Applied changes.

0:02

Worked

0:11

flux

Work completed:
  • Project description updated to "USB-C Powered 3-Axis Digital Compass Module with MAX7219 7-Segment Display (Compass-Only, Automotive Use)"
  • System architecture property revised to show only STM32 (U2), BMM150 (U5), MAX7219 (U3) driving displays U6–U8, power chain (U1, D3, D4, F1, U15), and brightness pot (SW1)
  • Removed U9–U14, U16/U17 and their passives, U4 (BMA280), and J1
  • Severed ONE_WIRE net and all orphaned SPI-CS and segment nets
  • Verified I2C pull-ups remain for U5
  • Restored connections: U3→U6–U8 segments, USB-C power chain (VBUS→3V3), SW1→PA6 & GND, and mounting holes cleared of nets
Success criteria met:
  • Only compass-relevant parts remain
  • All extraneous components and nets removed
  • Single SPI CS on U3 and valid I2C pull-ups present
  • Metadata reflects compass-only design
Next step: Prepare the design for PCB layout, starting with footprint review and stackup configuration.
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    FJ Cruiser Dashboard Module thumbnail
    USB-C Powered 3-Axis Digital Compass Module with MAX7219 7-Segment Display (Compass-Only, Automotive Use)

    Properties

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    Distributor

    Qty 1

    Arrow

    $38.29–$43.84

    Digi-Key

    $107.19–$111.00

    LCSC

    $58.85–$87.11

    Mouser

    $99.26–$99.32

    TME

    $35.81

    Verical

    $5.32–$10.31

    Controls