Schematic for sound-mqtt: 1S LiPo USB-C Power Management and 3.3V...

MCU Power Connection Analysis

Updated 7 nets

0:11

Connected U6:VDD_1 to U6:VDD_2

Connected U6:GND_1 to GND:GND

Connected U6:DIN to U1:I2S_SD

Connected U6:BCLK to U1:I2S_SCK

Connected U6:LRCLK to U1:I2S_WS

Connected U6:OUTP to J2:P1

Connected U6:OUTN to J2:P2

46 days

Connected SPI NOR power and signals

1:16

Autopilot

Started: Connect VCC pin of U7 to 3V3; Connect U7:GND to GND; Connect U7:CLK to U1:SCLK; Connect U7:MOSI to U1:MOSI; Connect U7:MISO to U1:MISO; Connect U7:CS to U1:GPIOy; Connect C8:P1 to U7:VCC; Connect C8:P2 to GND

46 days

Updated 6 nets

0:07

Connected U7:VCC, C8:P1, U1:VCC

Connected U7:GND, C8:P2, GND:GND

Connected U7:CLK to U1:SCLK

Connected U7:DI_(IO0) to U1:MOSI

Connected U7:DO_(IO1) to U1:MISO

Connected U7:~CS to U1:GPIOy

46 days

Running ERC and DRC...

0:31

Autopilot

Started: Run ERC and DRC to verify no new errors

46 days

Fetched and summarized ERC/DRC results

0:54

Autopilot

Review (ERC/DRC)

Started: Fetch ERC and DRC review results and message the user with a summary of any issues or confirm no new errors

Using Review (ERC/DRC) Tool.

46 days

Updated 5 document properties

0:08

Set Project Description to "1S LiPo USB-C power management and 3.3 V buck regulator subsystem with SIM800L cellular modem supply, 5 V boost for audio pla..."

Set Power Requirements to "USB"

Set Power Requirements (Secondary) to "Battery"

Set Connectivity to "Cellular"

Set Domain to "Telecommunications"

46 days

Renaming nets to "5V", "AUDIO", "SPI_CS"...

0:26

Autopilot

Started: Review net names for new nets and rename nets to "5V", "AUDIO", "SPI_CS" as needed

46 days

Updated labels for 3 net labels

0:03

Renamed 32a3b9ee-89b2-42a6-a6c5-e371af0bcd98 to 5V

Renamed dd8d717e-5e83-4fb9-a2d3-7abd3a80bcb4 to AUDIO

Renamed 221880d3-b096-45c9-9c45-b9003dbf2189 to SPI_CS

46 days

Worked

Autopilot

46 days

flux

0:00

Autopilot

Work done • All implementation plan tasks were completed except reviewing passive component ratings (5.3).

Tasks remaining • Review all passives for appropriate voltage and power ratings.

Success criteria ✔️ TPS61088 boost converter produces a regulated 5 V rail from SYS under GPIO control (U5 powered and FB network in place). ✔️ MAX98357A amplifier is powered from 5 V and drives J2 with BTL outputs. ✔️ W25Q32 SPI NOR is connected to U1 (CLK, MOSI, MISO, CS) with decoupling. ✔️ Existing BAT→charger→SYS→3V3 chain is unaffected.

Next step Proceed to PCB layout preparation: review and update footprints, configure board stackup, and choose a mounting solution for fabrication.

46 days

Plan completed.

Show Plan

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

Reports components that have been modified using the "!important" flag.

Airwires • 3

	Designators	Net
	U1:GND, U1:GND	Net 2
	U1:GND, U1:GND	Net 2
	U1:GND, U1:GND	Net 2

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

Reports parts that have no manufacturer part number.

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

sound-mqtt

Controls

Properties

Net Type - BAT

Net Type - 3V3

Net Type - SYS

ERC/DRC Review

Project Name

System Architecture

```mermaid
flowchart TD
    subgraph power_chain [Existing Power Chain]
        J1_Battery["J1 Battery"] --> Q1["Q1 PFET AO4407A"]
        Q1 --> SYS["SYS net"]
        SYS --> U3["U3 TPS62130 Buck"]
        U3 --> V33["3V3 net"]
        V33 --> U1["U1 ESP-12F MCU"]
        J3_USB_C["J3 USB-C"] --> U4["U4 SLM6400 Charger"]
        U4 --> J1_Battery
        U4 --> SYS
    end

subgraph audio_path [Audio Playback Path]
        SYS -->|5V boost| U5["U5 TPS61088 Boost"]
        U5 --> V5["5V net"]
        U5_EN["U5 EN"] --> R10["R10 100kΩ Pdwn"]
        R10 --> U1_GPIO["U1 GPIOx (EN control)"]
        V5 --> U6["U6 MAX98357A Amp"]
        U6 -->|BTL+| J2_Speaker["J2 Speaker+"]
        U6 -->|BTL-| J2_Speaker_N["J2 Speaker-"]
    end

%% Existing SIM800L branch
    SYS --> U2["U2 SIM800L"]
    U2 --> GND["GND"]
```

Power Requirements (Secondary)

Project Description

Availability & Pricing

Distributor		Qty 1
	LCSC	$3.92–$3.99

Assets

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