Schematic for ESP32-S3-WROOM-1 Reference Design rt4s: This project...

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Check that all reset/enable have an external pull-up or pull-down resistors. Rep...

avihanjain

@copilot Check that all reset/enable have an external pull-up or pull-down resistors. Report action items in an ordered list.

copilot

From the textual description of the project, it appears that there is an enable pin labelled as EN on the IC Designator: U1 and IC1. I will analyze this.

For U1, EN is connected to net cc6bd5c27af359a89ba9db9ff109f437 where there is a compensation capacitor C3 and a switch SW1. However, there is no pull-up or pull-down resistor in the circuit. It might be required to ensure the correct power-up or reset operation.
For IC1, EN is connected to net dbe139d7c9bb422370ed486eb3a6f43d. This net includes connection to +5V through D1, and grounded through R3 which forms a pull-up resistor.

Summary:

The U1 enable pin EN doesn't connect to a pull-up or pull-down resistor.
The IC1 enable line already has a pull-up resistor R3.

Here are my suggested actions:

Add a pull-up or pull-down resistor to the enable pin EN of the component U1. You can decide whether to use a pull-up or pull-down resistor based on the chip's enable signal logic level.
Check the value of pull-up resistor R3 for IC1. Ensure that the value is suitable for the enable pin voltage logic levels of the IC1.
For switch SW1, if it is connected to U1's EN pin, you may need a debouncing circuit to prevent transient spikes when the switch is pressed.

Please validate these assumptions with your circuit design requirements.

avihanjain

I just need a few pins, can you delete the others from the espboard

copilot

Absolutely, you can selectively remove unnecessary pins from your ESP board in Flux. Here's what you need to do:

Open your Flux project and select the ESP32-S3-WROOM-1-N8R8 (U1) component in the schematic or layout view.
Open the properties panel for the selected component.
Find the pins section of the properties panel, which lists all the available pins for the component.
Identify the pins you do not need in your circuit. For each of these pins, change their status from "in use" to "not in use" or "ignore" as per your requirement.
Finally, refresh your layout view to see the applied changes.

Be advised, it's paramount that you fully understand your design requirements before removing pins from your ESP board, as this might impact the functionality of your project.

Capacitance

10u F

3V3

UART_TXD0

IO48

IO11

IO1

ESP_EN

TCK

TDO

Capacitance

0.1u F

IO15

Resistance

100k Ω

IO37

IO0

TCK

IO4

IO13

+5V

IO9

IO7

IO9

TDI

TMS

UART_RXD0

Inductance

2.2u H

+5V

IO8

+5V

IO46

Capacitance

22u F

3V3

TDO

IO10

UART_TXD0

IO3

IO38

Resistance

220 Ω

IO16

Capacitance

10u F

Resistance

220 Ω

IC1

Resistance

220 Ω

IO2

IO11

UART_RXD0

IO17

USB_D-

TDI

IO4

TMS

IO3

IO12

3V3

IO36

IO10

IO15

IO14

IO7

IO6

IO0

IO13

USB_D-

IO5

3V3

IO14

USB_D+

IO47

IO8

IO35

IO21

Capacitance

0.1u F

IO2

IO5

IO45

3V3

IO1

Capacitance

10u F

USB_D+

IO18

IO6

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 28

Des	Net	Des	Net
IC1:PAD	GND	IC1:8b302e13	None
IC1:PAD	GND	IC1:8b302e13	None
J3:Pin_1	GND	U2:SD	Net 46
J3:Pin_2	GND	U2:VCC	Net 39
Trace 4f10	GND	IC1:8b302e13	None
Trace 4f10	GND	IC1:8b302e13	None
Trace 5b38	GND	U1:41_16	None
Trace 5f8b	GND	U1:41_20	None
Trace 18f1	GND	IC1:8b302e13	None
Trace 22fc	GND	U1:41_12	None
Trace 52ff	GND	U1:41_11	None
Trace 142a	GND	IC1:8b302e13	None
Trace 142a	GND	IC1:8b302e13	None
Trace 0274	GND	IC1:8b302e13	None
Trace 693c	GND	IC1:8b302e13	None
Trace 1226	GND	U1:41_21	None
Trace 1509	GND	U1:41_15	None
Trace 5377	GND	IC1:8b302e13	None
Trace 6655	GND	IC1:8b302e13	None
Trace 6655	GND	IC1:8b302e13	None
Trace 9510	GND	U1:41_13	None
Trace b390	GND	U1:41_17	None
Trace bdcb	GND	U1:41_14	None
U2:GND	GND	Trace 9699	Net 35
U2:GND	GND	Trace baef	Net 35
J3:Pin_10	Net 8	Trace 8f62	Net 48
J3:Pin_4	Net 35	U2:GND	GND
IC1:8b302e13	None	Trace d50b	GND

Invalid Layer

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

Component Overrides • 21

	Designator	Ruleset
	＊｀REF｀＊	R5
	＊｀REF｀＊	IC1
	＊｀REF｀＊	C2
	＊｀REF｀＊	J3
	＊｀REF｀＊	R6
	＊｀REF｀＊	J1
	＊｀REF｀＊	R3
	＊｀REF｀＊	C3
	＊｀REF｀＊	C1
	＊｀REF｀＊	SW2
	＊｀REF｀＊	LED1
	＊｀REF｀＊	U1
	＊｀REF｀＊	R2
	＊｀REF｀＊	R4
	＊｀REF｀＊	C5
	＊｀REF｀＊	SW1
	＊｀REF｀＊	LED3
	＊｀REF｀＊	LED2
	＊｀REF｀＊	C4
	＊｀REF｀＊	C6
	＊｀VALUE｀＊	L1 value

Airwires • 4

	Designators	Net
	Via-Island-2:Via-Island-2, U2:GND	GND
	Trace 0f4b:Trace 0f4b, U2:SCK	Net 21
	Trace 6555:Trace 6555, U2:WS	Net 27
	Trace f2f0:Trace f2f0, Trace 3a5e:Trace 3a5e	Net 48

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

Detect any via, trace or copper fill island that is not connected to any net.

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
	J1	None
	J3	None
	L1	None
	LED1	None
	LED2	None
	LED3	None
	R1	None
	R2	None
	R3	None
	R4	None
	R5	None
	R6	None

Parts Available

Beta

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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.

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Pull Up/Pull Down Presence

Beta

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

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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
15.0k
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

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ESP32-S3-WROOM-1 Reference Design rt4s

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License

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

Availability & Pricing

Distributor		Qty 1
	Digi-Key	$12.10–$12.88
	LCSC	$5.38
	Mouser	$13.50

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ESP32-S3-WROOM-1 Reference Design.png

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