Chat
Welcome to Flux
Treat Flux like your intern. Tell it what you'd like to build and it'll get to work. You can also ask it questions, brainstorm ideas, and teach it your preferences. Learn More
Explain project
Write a project description
Find schematic issues
Create a test plan
Ready.
USBA
explain this project.
1y
This project, labeled "STM32-Modular," is designed around the popular STM32 microcontroller, specifically using the STM32F103C8T6 MCU from STMicroelectronics. It appears to be set up for a variety of applications, based on the use of various peripheral pins and external components connected to the MCU. The project incorporates both USB Type A (USBA) and USB Type C (USBC) connectors, an 8MHz resonator (OSC-HF), a 32kHz resonator (OSC-LF), LEDs, and multiple capacitors for decoupling purposes.
Here's a breakdown of the main elements and their designated purposes:
MCU - STM32F103C8T6
This is the central component of the project. The STM32F103C8T6 is a performance line, medium-density 32-bit MCU with 64 KB Flash, USB, CAN, 7 timers, 2 ADCs, and 9 communication interfaces.
USB Connectors
- USBA: Used for connecting the board to USB A devices, potentially for power and communication.
- USBC: Although defined, it's marked with "Enable: false", suggesting it might not be active in the current configuration.
- OSC-HF (High Frequency): An 8MHz resonator connected to pins PD0 and PD1 of the MCU for main clock.
- OSC-LF (Low Frequency): A 32kHz resonator connected to pins PC14 and PC15 for low-power operations such as RTC.
- C1, C2, C3, C4, C5: These are 100nF decoupling capacitors, likely for noise suppression on the power supply lines to stabilize the MCU operation.
- LED1: A generic LED for indicating status or diagnostics. Its anode (A) is connected through a series resistor for current limiting.
- R1, R4: 510Ω resistors, possibly used for LED current limiting or pull-up/down purposes.
- RST: Provides an external reset mechanism to the MCU. It connects to the NRST pin, enabling external control over the MCU's reset function.
The "Project Nets" section details the electrical connections (nets) between various pins and components. For instance:
- Oscillator connections to the MCU (OSC-HF and OSC-LF to PD0, PD1, PC14, and PC15).
- Various power (VDD, VSS), reset (NRST), and boot (BOOT0) connections essential for the microcontroller's operation.
- Connections to multiple GPIOs (General Purpose Input/Output) for interfacing with peripherals or sensors.
This project seems focused on creating a versatile development board for the STM32F103C8T6 MCU, incorporating essential components for basic operation, including power regulation, clock generation, and basic user interaction through LEDs. USB connectivity implies potential data communication or programming capabilities. The detailed nets indicate a well-structured approach to connecting key MCU functions with external components for experimentation or a specific application yet to be fully defined within the provided project description.
1y
Someone is typing...
2
STM_PB3
STM_PB1
STM_PA6
STM_PB12
STM_PB14
Vin
USBC
Enable
false
C2
Capacitance
100n F
STM_PB11
LED1
STM_PB0
STM_PA4
STM_PA10
STM_PB5
C5
Capacitance
100n F
STM_PB7
STM_PA7
STM_PB9
Vin
C3
Capacitance
100n F
STM_PB10
STM_PA11
STM_PB8
STM_PA0
STM_PA15
Vin
STM_PA8
STM_PA1
C4
Capacitance
100n F
STM_PB13
STM_PB15
U2
STM_PA3
STM_PA2
STM_PB4
STM_PA5
STM_PB2
STM_PA12
STM_PA9
C1
Capacitance
100n F
STM_PA14
STM_PA13
R1
Resistance
510 Ω
STM_PB6
Reviews
Electrical Rule Checks
Duplicate Designators
Reports components with identical designators.
No-Connect Violation
Reports no-connect pins that are connected.
Pin-to-Pin Conflicts
Reports incompatible pin connections on the same net based on electrical pin types.
Shorted Components
Reports any 2-pin component with both pins connected to the same net.
Missing Power • 1
Component | |
|---|---|
Missing Designator
Reports components without a designator.
Design Rule Checks
Overlapping Copper • 128
Des | Net | Des | Net | ... | |
|---|---|---|---|---|---|
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None | |||||
None |
Invalid Layer
Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.
Component Overrides
Reports components that have been modified using the "!important" flag.
Airwires • 22
Designators | Net | |
|---|---|---|
None |
Layers with Multiple Fills
Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.
Floating Copper • 22
Protected Intrusions
Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.
Missing Footprints
Reports components that need a footprint but don't have one.
Manufacturing
Manufacturer Part Number
Reports components that have no manufacturer part number.
Parts Available
BetaChecks that all components are available from distributors.
System Checks
Auto-Layout
BetaReports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.
Passive Components
Resistor Power Rating
BetaChecks that the power traveling across a given resistor is under its rating with 50% headroom.
Learn morePull Up/Pull Down Presence
BetaChecks that IC pins that require pull up or pull down resistors have them.
Learn moreCapacitor Voltage Rating
BetaChecks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- 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 #powerjharwinbarrozo11.4M
- A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibraryjharwinbarrozo1.5M
- 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 10,000uF 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 20pF 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 #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #genericsjharwinbarrozo15.2k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlinkjharwinbarrozo1.2M
- 10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlinkjharwinbarrozo1.1M
Inspect
STM32-Modular
Controls
Properties
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Digi-Key | $6.42 | |
| LCSC | $1.42 | |
| Mouser | $6.11 | |
Assets
Welcome 👋
Flux helps you build PCBs faster with an AI teammate!
Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.
naor
copilot
- Microcontroller (U2): STM32F103C8T6 is at the heart of this project, intended to handle various inputs, outputs, and processing tasks. It is connected to a variety of pins and external components, indicating a multifunctional application.
- Decoupling Capacitors (C1, C2, C3, C4, C5): Each with a capacitance of 100nF, these are used for stabilizing the power supply to the microcontroller by filtering out noise from the power lines.
- LED (LED1): For visual feedback, possibly for status indication.
- Resistors (R1, R4): With a resistance of 510 Ohms, are likely current-limiting resistors for LEDs or for pull-up/down configurations.
- High Frequency Resonator (OSC-HF): A resonator designated for operation at 8 MHz, connected to the microcontroller for clocking purposes.
- Low Frequency Resonator (OSC-LF): A 32 kHz resonator likely used for real-time clock functions or low-power operation modes.
- USB Connectors (USBA and USBC): These connections suggest the inclusion of USB interface functionality. The USBA connector includes 3V3 power and data lines (D+, D-), while the USBC connector, despite being present, is disabled in the design.
- Reset Circuitry (RST): Includes connections for a reset mechanism for the microcontroller, indicating a need for manual or external reset control.
Notable Connections:- The project contains several nets connecting various pins of the microcontroller to other components. For example, oscillator connections for both high and low frequency operation suggest a design that may require precise timing or power-efficient sleep modes.
- Ground connections are extensively laid out, connecting multiple ground pins across the microcontroller, USB connectors, resonators, and decoupling capacitors. This is critical for the stability of the system.
- Power supply connections through Vin and 3V3 lines to multiple components denote a carefully considered power distribution strategy, critical for ensuring stable operations.
- A variety of other STM_PAx and STM_PBx pins from the microcontroller are used, although their specific functions are not detailed. These connections are likely to external interfaces, sensors, actuators, or additional modules based on the user’s application need.
Summary: