Portable Stereo Speaker Design

Worked

1:52

Started: Add a generic antenna connector component to the schematic.

Searching for a component.

Creating search plan for: "U.FL connector"

Searching.

Searching: "U.FL connector"

Finished searching for a component.

191 days

flux

0:00

I added a U.FL antenna connector (50 Ω RF coaxial) to the schematic as J5.

191 days

Added 1 component

0:39

Added 1x U.FL-R-SMT-1 as J5

191 days

Worked

0:16

Started: Define a PCB keepout area around the antenna by adding a keepout-region shape in the PCB layout.

191 days

flux

0:00

The session has ended. Here’s what was accomplished:

• System architecture defined with a 3S Li-ion battery and primary rails (3.3 V, 1.2 V, 2.7 V) documented and mermaid diagram updated. • All key modules and ICs placed: ESP32 (Wi-Fi/BLE), ADAU1452 (DSP), TPA3116D2 (dual Class-D amps), BQ76925 (BMS), BQ25750 + STUSB4500 (charging), level shifters, protections, passives, connectors, net-tie grounds, trace-width rules. • Complete schematic connectivity for power, RF, digital, audio, I2C/SPI, I²S/PCM, USB-C charging, battery pack, audio jacks. • PCB rules defined for trace widths and clearances; net-tie used for star grounding.

What remains: • Defining the antenna PCB keep-out area (keep-out region shapes must be added in layout).

Success criteria: • Major sub-systems integrated and connected ✔ • Performance targets addressed (robust charging, BMS, clear audio, wireless connectivity) ✔ • Partitioning, signal integrity, and manufacturability mostly met; antenna keep-out area still to add ✗

191 days

Resistance

500 Ω

U6 VIN - C2 P1

Resistance

500 Ω

U2 SDATA_OUT0 - U3 RINP

U1 GND - U5 VSS

U5 ~RST - U2 ~RESET

U1 IO18 - U3 GAIN/SLV

U2 SDATA_OUT0 - U3 RINP

U1 IO15 - U3 MUTE

U1 IO4 - U4 _CE

U6 VIN - C2 P1

U1 IO18 - U3 GAIN/SLV

U1 GND - U5 VSS

Resistance

500 Ω

J2 VBUS4 - D1 Anode

Resistance

500 Ω

U2 XTALOUT - C11 P1

U1 GND - U5 VSS

U1 IO22 - U8 SCL1

J1 1 - U4 SRN

U1 IO21 - U8 SDA1

C2 P2 - C5 P2

U2 XTALIN/MCLK - C10 P1

U4 SRP - GND GND

U1 IO23 - U8 EN

C11 P2 - GND GND

J2 VBUS4 - D1 Anode

U1 IO25 - U9 OE

U1 IO14 - U3 PLIMIT

U1 GND - U5 VSS

Resistance

500 Ω

U1 IO19 - U3 SYNC

U1 IO13 - U3 MODSEL

U1 IO2 - U4 _PG

U3 PVCC - C6 P1

Resistance

500 Ω

U4 SRP - GND GND

Resistance

500 Ω

U3 AVCC - C7 P1

U1 IO22 - U8 SCL1

U1 IO17 - U3 FAULTZ

U1 IO5 - U4 _INT

Resistance

500 Ω

U1 IO21 - U8 SDA1

U1 IO16 - U3 SDZ

Capacitance

Inductance

GND

Reviews

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 ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #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, 10000uF 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, 220pF, 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 suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
15.8k
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

Project Name

Involved Turquoise Scramble Suit

Description

Wi‑Fi/BLE Dual-Mode Portable Stereo Speaker with DSP and Smart Battery Management

Properties

TraceWidthRules

High-current rails (amplifier, battery): 5A max, >=1.2mm width (outer, 1oz). Power inputs/output filter paths: 2A max, >=0.65mm width. Digital rails (3.3V, 2.7V, 1.2V): <500mA, >=0.3mm width. RF signal traces (2.4 GHz, 50Ω microstrip to antenna): width ~0.95mm (for 1.6mm FR4, 4L, surface microstrip), max current <100mA. All calculations based on IPC-2221, 20°C rise, 1oz copper.

Missing Footprints

U1 VDD - U6 VOUT, U1 GND - U5 VSS, U1 IO14 - U3 PLIMIT, U1 IO15 - U3 MUTE, U1 IO18 - U3 GAIN/SLV, U1 IO25 - U9 OE, U1 IO23 - U8 EN, U1 IO2 - U4 _PG, U1 IO4 - U4 _CE, U1 IO16 - U3 SDZ, U1 IO19 - U3 SYNC, U1 IO17 - U3 FAULTZ, U1 IO13 - U3 MODSEL, U2 SDATA_OUT0 - U3 RINP, U1 IO12 - U7 VBUS__EN_SNK, U1 IO0 - U7 RESET, U5 ~RST - U2 ~RESET, U6 VIN - C2 P1, U3 PVCC - C6 P1, U3 AVCC - C7 P1, U7 VREG__1V2 - C5 P1, U7 VREG__2V7 - C4 P1, U2 XTALIN/MCLK - C10 P1, U2 XTALOUT - C11 P1, J1 1 - U4 SRN, J2 VBUS4 - D1 Anode

Stackup

4-layer: Top Signal, Inner Ground, Inner Power, Bottom Signal

Primary P…er Rails

3.3 V digital/RF, 1.2 V core analog, 2.7 V peripheral analog

BoardDimensions

226.075×2295.5

Battery …guration

3S Li-ion (11.1 V nominal, 12.6 V max)

BoardWidth

226.075

BoardHeight

2295.5

System Ar…itecture

graph LR subgraph Power BATTERY[Battery Pack] CHARGER[USB-C Charger] PMIC[PMIC / Buck-Boost] BMS[BMS + Cell Balancing] FUEL[Fuel Gauge] end subgraph RF RF_MOD[Wi-Fi/BLE Module] ANT[Antenna] end subgraph Digital MCU[MCU / DSP] MEM[Memory] end subgraph Audio DAC[I²S Audio Interface] AMP_L[Class-D Amp Left] AMP_R[Class-D Amp Right] FILTER_L[LC Filter Left] FILTER_R[LC Filter Right] end subgraph Mechanical HOLES[Mounting Holes] ENC[Enclosure Interface] end BATTERY --> BMS --> FUEL BATTERY --> PMIC --> |Power Rails| MCU BATTERY --> PMIC --> |Power Rails| RF_MOD BATTERY --> PMIC --> |Power Rails| AMP_L BATTERY --> PMIC --> |Power Rails| AMP_R CHARGER --> PMIC MCU --> DAC --> AMP_L --> FILTER_L MCU --> DAC --> AMP_R --> FILTER_R MCU --> RF_MOD RF_MOD --> ANT HOLES --- ENC ENC --- MCU ENC --- RF_MOD ENC --- AMP_L ENC --- AMP_R

Pricing & Availability

Distributor	Qty 1
Arrow	$9.44–$13.18
Digi-Key	$9.74–$12.09
LCSC	$16.32–$16.72
Mouser	$13.14–$13.79
TME	$7.61
Verical	$7.14–$12.87

Controls

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adriangispert / Involved Turquoise Scramble Suit

Schematic