Ground Plane Setup Instructions

I moved the USB/CH340 section to improve routing and reran autoroute.
What changed:
  • Repositioned J1/J2 with U3/U4 and local USB passives for cleaner USB D+/D− escape.
  • Removed stale USB-area traces/vias before routing.
  • Reran autoroute from the updated placement.
  • Final physical DRC check shows no current dangling/floating/overlap class listed separately; the remaining issue class is airwires.
Remaining:
  • 74 airwires still remain.
  • USB D+/D− still did not fully route; the router continues to stall on the differential pairs.
  • Manufacturing MPN errors are still ignored per your instruction.
I can’t honestly claim the board is fully fixed yet: the remaining airwires need targeted/manual routing rather than more broad autoroute.
your usless im cancelling
I understand. I didn’t get this board to a clean, manufacturable state, and I can see why you’re frustrated.
If you do cancel, before leaving I strongly recommend:
  • Use version history to restore the last known good revision before these routing/layout attempts.
  • Export or duplicate the project first so you don’t lose any recoverable work.
  • If you want human help recovering the project or discussing account/billing impact, use the official Flux support path:
    https://docs.flux.ai/Introduction/getting-support
I’m sorry for the wasted time and cost.
Restore last good
Find remaining airwires
Explain USB fix
Create recovery plan
Export current design
J4
J6 Pin_2 - R10 P1
U2 (PCINT3/OC2A/MOSI)_PB3 - J4 MOSI
U2 (PCINT4/MISO)_PB4 - J4 MISO
U2 VCC_2 - U2 AVCC
U2 (PCINT3/OC2A/MOSI)_PB3 - J4 MOSI
U1 PB5_(SCK/PCINT5) - R7 P1
U2 PC6_(~RESET~/PCINT14) - R6 P1
U2 (PCINT4/MISO)_PB4 - J4 MISO
U2 VCC_2 - U2 AVCC
U1 VCC_2 - U1 AVCC
J5 Pin_2 - R9 P1
D2 K - U2 PD1_(TXD/PCINT17)
U1 AREF - C1 P1
U2 PB5_(SCK/PCINT5) - R8 P1
U2 AREF - C5 P1
U1 (PCINT4/MISO)_PB4 - J3 MISO
U2 VCC_2 - U2 AVCC
U2 PC2_(ADC2/PCINT10) - R11 P2
U2 VCC_2 - U2 AVCC
R9 P2 - C19 P1
U2 VCC_2 - U2 AVCC
U2 PC6_(~RESET~/PCINT14) - R6 P1
R10 P2 - C20 P1
U2 (PCINT7/XTAL2/TOSC2)_PB7 - Y2 2
J7 Pin_2 - R11 P1
U2 (PCINT6/XTAL1/TOSC1)_PB6 - Y2 1
U2 PB5_(SCK/PCINT5) - J4 SCK
U1 (PCINT3/OC2A/MOSI)_PB3 - J3 MOSI
U4 TXD - U2 PD0_(RXD/PCINT16)
R16 P2 - R17 P1
U2 VCC_2 - U2 AVCC
U1 GND_2 - U1 GND_3
U5 GND_TAB - J3 GND
U2 GND_2 - U2 GND_3
U1
Not Recommended for New Designs
U2
Not Recommended for New Designs
Y2


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SMC3 3DOF Motion Controller

SMC3 3DOF Motion Controller thumbnail
Arduino-compatible SMC3/SimTools 3-DOF motion controller for three 12 V worm-drive motors, Hall feedback sensors, dual USB-C interfaces, and E-stop safety input.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$18.27–$22.81

Digi-Key

$31.25–$35.55

HQonline

$14.80

LCSC

$33.18–$34.54

Mouser

$26.64

TME

$8.91

Verical

$20.08–$35.20

Controls