Schematic for Disturbed Apricot Robot Vacuum: ESP32-S3 Audio...

Temperature and Humidity Sensor Node Design

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Organizing components.

Clarifying components and links.

Crafting schematic and PCB layout reviews.

Here’s my review of your schematic and PCB against your recorder/transcriber objectives:

1. Power & Battery Subsystem

Battery protection: U5 (DW01A) + Q1 (FS8205A) present for OVP/UVLO/OCP
Ideal-diode and gauge: U6 (LM66100) + U3 (MAX17262REWL)
USB-C charging: J2 (FUSB302) ✔ decoupling: C11 on 3V3, C12 on REG

2. MCU & Storage Interface

ESP32-S3: U1 decoupled by [C11], C13
SDIO: J1 microSD connector wired to IO pins; add 10 kΩ pull-ups on DAT0–DAT3 if not present

3. Audio Capture Path

I2S MEMS mic: U7 (INMP441)
- Decoupling: C10 100 nF
- Series resistors: R6, R7, R8 (22 Ω each) on WS/BCLK/DATA
- ESD diode: D1 on DATA line
- Test pads: TP1, TP2, TP3

4. Signal & Power Integrity

All digital rails decoupled within 5 mm of IC pins; series resistors and ESD in place for I2S
MCU and PMIC rails meet voltage-rating requirements; ERC shows no missing pull-ups/pull-downs or decoupling errors

5. PCB Layout

4-layer stackup: inner planes for GND and power, top layer for high-speed signals
Mic placement: [U7] top-port with 5 mm acoustic keepout; ensure no copper beneath port
Antenna: J4 U.FL connector needs a 15 mm keepout in all directions
microSD routing: SDIO traces length-matched and impedance-controlled
USB-C port: [J2] edge-mounted with D1 close to VBUS pad
Test pads: placed for oscilloscope/probing of I2S lines

Recommendations & Next Steps

Add 10 kΩ pull-ups on SDIO data pins if required by SD standard
Consider a TVS diode on USB VBUS for surge protection
Validate battery sizing against updated power budget including 0.65 mA mic draw
Run full DRC on the routed layout before fabrication

Overall, the design meets the audio-capture, storage, and BLE-sync objectives, with robust power protection and signal integrity measures in place.

68 days

Plan completed.

Show Plan

U4 IN - C6 P1

R6 P1 - U7 WS

R7 P1 - U7 SCK

GND GND - C3 P2

R8 P1 - U7 SD

GND GND - C3 P2

U2 SELECT - R3 P1

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 26

Des	Net	Des	Net
C5:P1	BATT	Trace 1379	VCC
U7:SCK	BCLK	Trace 8fd5	VCC
U7:SCK	BCLK	Trace 9c88	VCC
U7:SCK	BCLK	Trace f1c2	VCC
Trace 3bce	EN	U6:N_CE	U6_N_CE
Trace 3bce	EN	U6:VIN	VIN
Trace 3bce	EN	U6:GND	None
U4:EN	EN	D1:VN	None
C5:P2	GND	Trace 1379	VCC
Trace 2494	IN	C13:P1	GND
U4:IN	IN	D1:CH1	SD
TP3:P1	SD	U1:IO45	None
Trace 78bb	U5_OD	R8:P2	None
Trace bbab	U5_OD	R2:P1	EN
Trace bbab	U5_OD	R8:P2	None
Through-hole - 1	VCC	U7:SCK	BCLK
Trace 24c1	VCC	Trace 930e	Net (USB_SHIELD - P1)
Trace 24c1	VCC	Trace 930e	Net (USB_SHIELD - P1)
Trace 1379	VCC	C9:P2	GND
TP1:P1	WS	U1:GND_2	None
J1:CD/DAT3	None	Trace ec12	EN
J1:SHIELD	None	Trace bbab	U5_OD
J3:NC	None	Trace f3d4	IN
J3:NC/TDI	None	Trace f3d4	IN
U4:GND	None	D1:CH1	SD
U7:BCLK	None	U2:SELECT	MIC_SELECT

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 • 14

	Designators	Net
	C5:P1, U3:BATT	BATT
	U4:EN, R2:P1	EN
	Via-Island-14:Via-Island-14, U3:REG	GND
	U4:IN, C6:P1	IN
	U2:SELECT, R3:P1	MIC_SELECT
	J2:P2, J2:GND	Net 2
	D1:CH1, Trace 0ed2:Trace 0ed2	SD
	Trace fafe:Trace fafe, TP3:P1	SD
	R4:P1, U5:OD	U5_OD
	R5:P1, U6:N_CE	U6_N_CE
	Trace 80ed:Trace 80ed, C7:P1	VCC
	U2:VDD, C4:P1	VDD
	Trace fc16:Trace fc16, U6:VIN	VIN
	Trace 5470:Trace 5470, TP1:P1	WS

Deprecated Rules

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

Layers with Multiple Fills • 1

	Layer	Net
	All	GND, GND

Floating Copper • 7

	Name
	Trace 930e
	Trace 930e
	Trace 930e
	Trace 930e
	Trace 930e
	Trace 1379, Trace c230, Trace 33b4, Trace e850, Trace b551, Trace 20fe, Trace 1836, Trace a26d, Trace eb02, Trace f1c2, Through-hole - 1, Trace 8fd5
	Trace 9c88

Protected Intrusions

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

Manufacturing

Manufacturer Part Number • 16

	Designator	MPN
	C10	None
	C11	None
	C11	None
	C12	None
	C12	None
	C13	None
	C13	None
	C14	None
	C15	None
	J3	None
	R6	None
	R7	None
	R8	None
	TP1	None
	TP2	None
	TP3	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

Resistor	Power Rating	Power Actual
R1	None	None
R2	None	None
R3	None	None
R4	None	None
R5	None	None
R6	None	None
R7	None	None
R8	None	None

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

Disturbed Apricot Robot Vacuum

Controls

Properties

System Architecture

Power Requirements

Battery

Connectivity

Bluetooth

Estimated Power Consumption

0.65

Operating Voltage

1.8 V

Role

Sensing (Shunt)

Manufacturing Quantity Target

100

Microphone Placement Guidance

Place the MEMS microphone so that its acoustic port is unobstructed by the PCB or enclosure. Prefer edge placement or a designated hole in the enclosure aligned with the microphone port. Avoid routing traces or placing copper beneath the acoustic port and maintain a keepout area as defined in the microphone datasheet.

Pull-up/Pull-down ERC Issues

[]

Microphone Supply Current (typical)

0.65 mA

Operating Voltage

3.3 V

Domain

Consumer Electronics

Availability & Pricing

Distributor		Qty 1
	Arrow	$1.86–$2.02
	Digi-Key	$9.87–$11.49
	LCSC	$7.90–$8.06
	Mouser	$9.12
	TME	$1.07
	Verical	$2.97–$7.41

Assets

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