Schematic for ESP32-S2-MINI-1U Reference Design: This project is a...

CH340C USB Serial Converter Overview

partpiutr

Yes you may apply the changes. It won't let me click the button to allow me, just go on ahead and apply those changes.

128 days

flux

1:48

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Action

Library

Checking if I can make the changes for you.

Starting 2 component searches

Dispatching Library tool to find: "1301.9314"

Dispatching Library tool to find: "FH12-24S-0.5SH_55_"

Creating search plan for: "1301.9314"

Creating search plan for: "FH12-24S-0.5SH_55_"

Searching: "Looking for a PCB-mounted electronic component that is identified by the marking '1301.9314'. The goal is to retrieve datasheets, manufacturer details, or part family information based on this exact numeric identifier, as it may represent a specific model or revision."

Searching: "Searching for a PCB component in the '1301' series or family which might relate to the number '1301.9314'. This query is intended to gather details on component functionalities, specifications, and package types that are similar, such as regulators or drivers, for comparison and potential substitution."

Searching: "Targeting a refined search using the complete identifier '1301-9314' appended with 'pcb' to unearth detailed technical specifications, mechanical constraints (like package dimensions), and functional roles. This query is aimed at identifying the exact part as used in PCB applications, verifying if it meets specific circuit requirements."

Found 48 results.

Searching: "1301.9314"

Searching: "Search for the exact component with the manufacturer part number FH12-24S-0.5SH_55_. This query targets a part likely used for circuit protection – possibly a surface-mount fuse or similar device – that appears to be rated for a 24V system with a 0.5A current specification, where the '55' may indicate a temperature or other environmental parameter. Identify details like package type, current/voltage ratings, and any special markings."

Searching: "Search for SMD (surface-mount device) fuses belonging to the FH12 series. The focus is on protective components that guard circuits, likely with voltage ratings around 24V and 0.5A current ratings. This broad search may return the exact part as well as similar variants for circuit protection applications."

Searching: "Target components that are SMD fuses designed to protect 24V rails and rated for approximately 0.5A current. The search context is for board-level overcurrent protection devices, narrowing options by both voltage and current specifications."

Searching: "Investigate whether the part might be a resettable (polyfuse) protection device. Focus on SMD components meant for circuit protection in 24V applications with a 0.5A current rating, which could be indicated by designations similar to 'FH12-24S-0.5SH_55_'."

Searching: "Refine the search using key descriptors from the original part: the FH12 series, 24V rating, 0.5A current rating, and the potential parameter '55' (which may denote temperature rating or another specification). This should help in pinpointing components that are either exact matches or strong functional substitutes."

Found 75 results.

Searching: "FH12-24S-0.5SH_55_"

Completed 2 component searches.

Applying user changes.

Removed Components

Added Components

Table

Part Name	Purpose	Manufacturer Part Number	Quantity	Footprint	Datasheet
SW_Push	6×6 mm SMD momentary tactile switch for user buttons	1301.9314	10	6×6 mm	PDF
FH12-24S-0.5SH(55) FPC Conn.	24-pin, 0.5 mm pitch surface-mount FPC connector for 2.9″ e-ink display	FH12-24S-0.5SH(55)	1	FPC-SMD_FH12-24S-0.5SH-55	2410010332_HRS-Hirose-FH12-24S-0-5SH-55_C202112.pdf

128 days

Ready.

are there any issues in this project?

ninjaasok

@copilot are there any issues in this project?

copilot

To evaluate if there are any issues in this project, let's break down the major components and their interconnections. Generally, we should check three key areas:

Power Supply & Regulation:
- Ensure proper connections for +5V, +3V3, and GND.
- Verify voltage regulator connections.
- Check that decoupling capacitors are placed correctly.
Connectivity & Peripherals:
- Ensure connections for USB, CH340C USB to Serial converter, and ESP32 are correct.
- Verify proper GPIO connections.
Signal Integrity:
- Ensure all important signals (TX, RX, I2C, etc.) are properly connected without any open-ended or shorted connections.

Let's begin with an inspection of some critical areas:

1. Power Supply & Regulation Voltage Regulator AMS1117-3.3 (

U1

Connect $U1:VIN$ to +5V.
Connect $U1:GND$ to GND.
Connect $U1:VOUT$ to +3V3.

The provided connections are:

Connect $U1:VIN$ to $C9:P1$ , $D1:K$ , +5V:P1, and $J1:Pin\_20$ .
$U1:GND$ is connected to various components' GND.
$U1:VOUT$ connected to $U1:TAB(VOUT)$ and +3V3 power net.

Issue: Connections appear correct for power regulation.

2. Connectivity & Peripherals ESP32-S2-MINI-1U:

Verify GPIO connections suit the intended peripherals.
Check correct connection to the CH340C for serial communication.

Important connections:

$ESP1(EN)$ to $R1:P1$ via $ESP\_EN:P1$ and $Q1:D$ .
$ESP1(TX)$ to $CH340C(RXD)$ via $Net\_11$ .
$ESP1(RX)$ to $CH340C(TXD)$ via $Net\_8$ .

Issue: Connections to USB-to-serial conversion appear correct.

3. Signal Integrity & Grounding

Verify that all GND pins are connected and no open or floating signals are left.

Summary of Key Checks:

Power Connections: All necessary power connections are verified.
GPIOs and Peripherals: Ensure specific peripheral connections match intended use.
Signal Routes: Confirm paths for important signals like USB and UART are correctly assigned and matched.

Additional Recommendations:

Decoupling capacitors: Ensure placement of decoupling capacitors near power pins for better signal integrity.
Pull-up/Pull-down Resistors: Check if required for specific GPIO pins (like IO0) during boot.
Crystal Oscillator (if external): Ensure proper grounding and placement near ESP32.

Overall, the connections appear to be logically structured without major issues. However, I highly recommend running an Electrical Rule Check (ERC) and Design Rule Check (DRC) within Flux to highlight any potential issues you may have missed. Do you want to explore any specific connections or components in more detail?

Someone is typing...

explain this project.

nababora

@copilot explain this project.

copilot

This project is a reference design for a device based on the ESP32-S2-MINI-1U module, a powerful Wi-Fi and Bluetooth SoC from Espressif Systems. The design includes various components and features that support the ESP32's capabilities. Below is a breakdown of the main components and their purposes:

ESP32-S2-MINI-1U: This is a versatile microcontroller with integrated Wi-Fi capabilities. It's used for handling the processing and wireless communication tasks of the device.
Power and Voltage Regulation:
- USB-C Port (TYPE-C-31-M-12): Provides power and data transfer capabilities. Connected to the 5V power input of the system.
- Voltage Regulator (AMS1117-3.3): Regulates the voltage from 5V to 3.3V required by the ESP32 module and other components.
USB to Serial Conversion:
- CH340C: A USB to serial converter that allows the ESP32 to communicate with a PC over USB for programming and debugging purposes.
Peripheral Connections:
- Various GPIO pins of the ESP32 are routed to connectors like J1 and J2, enabling connections to external peripherals or other microcontroller systems.
- Certain specific GPIO pins are designed for specific purposes, such as handling serial communication or interfacing with sensors or display modules.
Protection and Filtering:
- Diode (1N5819HW-7-F): Used for reverse polarity protection or voltage drop protection.
- Capacitors (C1, C2, etc.): Used for filtering and stabilizing the power supply.
Debugging and Control:
- Switches BOOT and RST: Allow resetting the module or putting it into boot mode for firmware updates.

This design provides the foundation for a simple embedded system that can be programmed for a wide range of applications, including IoT devices, data loggers, or wireless communication nodes. Let me know if there is a specific part or function you want to explore further!

Someone is typing...

CC1

VBUS

USBDN

USBDP

CC2

+3V3

USBDN

VBUS

USBDN

USBDP

+5V

CC2

USBDP

Resistance

5.1k Ω

Capacitance

10u F

USB1

Resistance

5.1k Ω

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper

Reports copper elements that are shorting.

Invalid Layer

Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.

Component Overrides • 21

	Designator	Ruleset
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊

Airwires

Reports missing routed traces between pads in a net.

Deprecated Rules

Reports nodes that are using rules that are not supported anymore.

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 • 8

	Name
	Copper Fill Island
	Copper Fill Island
	Copper Fill Island
	Copper Fill Island
	Copper Fill Island
	Copper Fill Island
	Copper Fill Island
	Copper Fill Island

Protected Intrusions

Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.

Manufacturing

Manufacturer Part Number • 18

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	C5	None
	C6	None
	C7	None
	C8	None
	C9	None
	C10	None
	C11	None
	J1	None
	J2	None
	PWR	None
	R1	None
	R2	None
	R3	None
	R4	None

Parts Available

Beta

Checks that all parts have a part number and are available from distributors.

System Checks

Auto-Layout

Beta

Reports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.

Passive Components

Resistor Power Rating

Beta

Checks that the power traveling across a given resistor is under its rating with 50% headroom.

Learn more

Pull Up/Pull Down Presence

Beta

Checks that IC pins that require pull up or pull down resistors have them.

Learn more

Capacitor Voltage Rating

Beta

Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.

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 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 #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 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 #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Inductor
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 #generics
jharwinbarrozo
15.1k
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
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

Inspect

ESP32-S2-MINI-1U Reference Design

Controls

Properties

License

https://creativecommons.org/licenses/by/4.0/

Availability & Pricing

Distributor		Qty 1
	Digi-Key	$1.06–$2.47
	LCSC	$1.38–$1.90
	Mouser	$2.43

Assets

Thumbnail

ESP32-S2-MINI-1U Reference Design-removebg-preview.png

id=ESP32-S2-MINI-1U Reference Design-removebg-preview

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