Impédance USB et Placement Cristal

0:07

Work done

Créé l’architecture de base de la carte autour de U1, du régulateur U2, du connecteur USB-C J1, du quartz Y1, du header SWD J2 et de la protection ESD U3
Ajouté et câblé les blocs fonctionnels requis : rail 3.3 V, entrée VBUS, USB D+/D-, quartz 16 MHz, BOOT0, NRST, SWD, résistances CC USB-C, découplages et capacités bulk
Configuré le PCB en 2 couches avec un contour rectangulaire 75 mm x 55 mm et des règles de base de largeur/clearance
Vérifié la présence des empreintes : aucune empreinte manquante détectée

Success criteria review

✅ Le schéma contient les blocs requis et leurs interconnexions principales : MCU, alimentation 3.3 V, oscillateur 16 MHz, USB, SWD
✅ Le PCB est bien configuré en 2 couches avec empreintes attribuées
❌ Le routage de base n’a pas pu être réalisé automatiquement ici : le projet présente encore des airwires et nécessite une étape d’Auto-Layout ou un routage manuel dans l’éditeur
❌ La validation finale n’est pas propre côté ERC/DRC : il reste des broches MCU non utilisées signalées comme flottantes ainsi que des airwires sur le PCB

Next steps La base schématique et les contraintes PCB sont prêtes pour l’itération suivante, mais la conception n’est pas encore pleinement "prête fabrication". La suite à faire est : lancer l’Auto-Layout ou router manuellement, puis traiter les broches non utilisées du U1 selon le datasheet et revalider ERC/DRC. Je peux ensuite continuer avec une passe de nettoyage ciblée si vous voulez.

14m

soraya10

peux tu faire l'auto layout ?

flux

0:25

Checking if I can make the changes for you.

Reading docs about How do I start Auto-Layout in Flux for PCB placement and routing on my current board? Can Copilot do it, or does the user need to start it manually?.

Addressing user action needed.

Je ne peux pas lancer l’Auto-Layout à ta place. Voici l’entrée la plus pertinente que j’ai trouvée :

Getting Started Initiate Auto-Layout

Make sure your schematic and component placement are finalized.

Adjust any specific constraints for your board, such as dimensions, component orientations, or keep-out zones. Learn more.

Confirm your credit allowance before starting. Auto-Layout consumes Flux credits per job based on complexity. Learn more.

Click on the auto-route button at the bottom page.

Source

Vérifier avant auto-layout

Régler dimensions carte

Contrôler règles PCB

Needs more info.

U1 VSSA - U2 GND

Capacitance

100nF

Capacitance

100nF

U1 VSSA - U2 GND

Capacitance

100nF

U1 VSSA - U2 GND

Capacitance

1uF

U1 VSSA - U2 GND

Capacitance

4.7uF

Capacitance

1uF

Capacitance

100nF

U1 VSSA - U2 GND

J1 SHIELD - U1 VSS

Capacitance

100nF

U1 VSSA - U2 GND

Capacitance

100nF

U1 VSSA - U2 GND

R5 P1 - U1 BOOT0

U1 VBAT - U2 EN

J1 VBUS - U2 VIN

U1 VBAT - U2 EN

R8 P1 - U1 PA14

U2 VOUT - U1 VDD

J1 VBUS - U2 VIN

U1 VBAT - U2 EN

U2 VOUT - U1 VDD

U1 PB3 - J2 04

U1 VBAT - U2 EN

R6 P2 - U1 NRST

U1 VBAT - U2 EN

U1 PD1_OSC_OUT - Y1 OUT/IN

U1 VBAT - U2 EN

U1 PA12 - R3 P1

U1 PA11 - R4 P1

J1 VBUS - U2 VIN

R7 P2 - U1 PA13

U1 PD0_OSC_IN - Y1 IN/OUT

Reviews

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
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Generic Inductor
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
15.6k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
jharwinbarrozo
1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
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jharwinbarrozo
1.1M

Project Name

STM32F103 USB 3V3 Dev Board

Description

Carte STM32F103 2 couches avec alimentation 3,3 V régulée, quartz 16 MHz, USB 2.0 Full-Speed, interface SWD et support de fabrication.

Properties

Operating Voltage

3.3V

Impleme…Details

STM32F103C8T6 avec USB FS, quartz HSE 16MHz, régulation depuis USB 5V vers 3.3V par LDO, carte 2 couches avec interface SWD et connecteur USB.

Pricing & Availability

Distributor	Qty 1
Arrow	$3.14–$6.32
Digi-Key	$7.53–$8.02
LCSC	$3.38–$3.49
Mouser	$6.36
TME	$0.32
Verical	$1.31–$7.61

Assets

No assets added.

Controls

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soraya10 / STM32F103 USB 3V3 Dev Board

Schematic