hasofukirsch/515-pcb-routing-autolayout-autoroute-the-gpios: AvocAudio is a compact tinyML...

Replacement Recommendation Inquiry

hasofukirsch

Recommend a replacement for U1.

295 days

flux

0:29

General (prev)

Project

Could you please clarify what criteria you’re looking for in a replacement for U1? For example:

Are you looking for a drop‑in, pin‑compatible replacement with similar performance (e.g. same ARM Cortex‑M0+ dual‑core, 133 MHz)?
Or are there additional features (e.g. enhanced USB functionality, different package) you need?

Let me know so I can recommend the best alternative.

295 days

Ready.

C10

Capacitance

0.1µ F

C12

Capacitance

0.1µ F

SD_DATA0

C13

Capacitance

0.1µ F

QSPI_SD0

3V3

QSPI_SS

Capacitance

0.1µ F

Capacitance

0.1µ F

SD_DATA2

QSPI_SCLK

R15

Resistance

50 Ω

3V3

SD_DATA1

1V1

LORA_RX

SD_CLK

Capacitance

0.1µ F

LORA_TX

SD_DATA3

1V1

Capacitance

0.1µ F

R19

Resistance

1.5k Ω

LED1

Color

Green

CONTROL CIRCUIT (MCU)

DHT_DATA

Capacitance

1µ F

C11

Capacitance

0.1µ F

QSPI_SD1

SD_CMD

R16

Resistance

50 Ω

QSPI_SD2

LORA_NRST

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 45

Des	Net	Des	Net
Module3:3V3	3V3	Module3:P1	VBAT
Module3:3V3	3V3	Trace 284c	VBAT
Module3:3V3	3V3	Trace 284c	VBAT
Module3:3V3	3V3	Trace 284c	VBAT
M2 Mounting Hole:～	GND	M2 Mounting Hole:Pad	None
M2 Mounting Hole:～	GND	M2 Mounting Hole:Pad	None
M2 Mounting Hole:～	GND	M2 Mounting Hole:Pad	None
M2 Mounting Hole:～	GND	M2 Mounting Hole:Pad	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
M2 Mounting Hole:～	GND	Via	None
Through-hole - 1	GND	M2 Mounting Hole:Pad	None
Through-hole - 1	QSPI_SD2	Trace 9536	QSPI_SD0
J3:D-	USB_D-	J3:D+	USB_D+
Trace 80f4	USB_D-	J3:D+	USB_D+
J3:D+	USB_D+	J3:ID	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND
Via	None	M2 Mounting Hole:～	GND

Invalid Layer

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

Component Overrides • 97

	Designator	Ruleset
	Layout	Override rule for Layout
	Layout	Override rule for Layout
	Module1:CASE_1	Override rule for CASE_1
	Module1:CASE_2	Override rule for CASE_2
	Module1:GND	Override rule for GND
	Module1:XIN	Override rule for XIN
	Module1:XOUT	Override rule for XOUT
	Module2:GND	Override rules for GND
	Module2:VBAT	Override rule for VBAT
	Module2:VBAT	Override rule for VBAT
	Module2:VIN	Override rule for VIN
	Module2:VIN	Override rules for VIN
	Module2:VSOLAR	Override rule for VSOLAR
	Module2:VUSB	Override rule for VUSB
	Module3:3V3	Override rule for 3V3
	Module4:3V3	Override rule for 3V3
	Module4:GND	Override rule for GND
	Module4:VIN	Override rules for VIN
	Module8:3V3	Override rule for 3V3
	Module8:DHT_DATA	Override rule for DHT_DATA
	Module8:GND	Override rule for GND
	Module8:GND	Override rule for GND
	Trace 4cf3	Override rule for Trace
	Trace 4cf3	Override rule for Trace
	Trace 4cf3	Override rule for Trace
	Trace 4cf3	Override rule for Trace
	Trace 4cf3	Override rule for Trace
	Trace 4cf3	Override rule for Trace
	Trace 4cf3	Override rule for Trace
	Trace 284c	Override rule for Trace
	Trace 284c	Override rule for Trace
	Trace 284c	Override rule for Trace
	Trace 284c	Override rule for Trace
	Trace 284c	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace bde7	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	Trace c230	Override rule for Trace
	3.3V Out Regulator	Override rule for 3.3V Out Regulator
	CONN_OSTVN02A150_OST	Override rule for CONN_OSTVN02A150_OST
	Crystal Oscillator	Override rule for Crystal Oscillator
	External Flash Module	Override rule for External Flash Module
	GND	Override rule for GND
	POWER SOURCE SELECT	Override rule for POWER SOURCE SELECT
	Temperature Sensor	Override rule for Temperature Sensor
	VBAT	Override rule for VBAT
	VIN	Override rule for VIN
	VIN	Override rule for VIN
	Voltage Regulator SMPS 5V Out	Override rule for Voltage Regulator SMPS 5V Out
	VSOLAR	Override rule for VSOLAR

Airwires • 46

	Designators	Net
	Trace 22d0:Trace 22d0, U1:DVDD	1V1
	U1:VREG_VOUT, Trace 22d0:Trace 22d0	1V1
	C6:1, C5:1	3V3
	C6:1, C7:1	3V3
	C8:1, C7:1	3V3
	C8:1, U1:IOVDD	3V3
	C10:1, C9:1	3V3
	C10:1, C11:1	3V3
	C12:1, C11:1	3V3
	C12:1, C13:1	3V3
	Module2:VIN, Module2:VIN	3V3
	Module3:3V3, Module2:VIN	3V3
	Module4:3V3, Module5:3V3	3V3
	Module4:VIN, C11:1	3V3
	Module4:VIN, Module4:3V3	3V3
	Module5:Trace b976, Module8:3V3	3V3
	Module6:Trace 4cf3, Module2:VIN	3V3
	Module6:Trace 4cf3, U1:IOVDD	3V3
	Module7:Trace 3e90, U1:IOVDD	3V3
	Module9:3V3, C8:1	3V3
	U1:ADC_AVDD, C9:1	3V3
	U1:IOVDD, U1:IOVDD	3V3
	U1:IOVDD, U1:IOVDD	3V3
	U1:IOVDD, U1:IOVDD	3V3
	U1:IOVDD, U1:USB_VDD	3V3
	U1:VREG_VIN, U1:ADC_AVDD	3V3
	U1:VREG_VIN, U1:USB_VDD	3V3
	U1:GPIO16, Trace b2cb:Trace b2cb	DHT_DATA
	J3:GND, J3:ID	GND
	Module8:GND, M2 Mounting Hole:～	GND
	Module9:GND, M2 Mounting Hole:～	GND
	Through-hole - 1:Through-hole - 1, M2 Mounting Hole:～	GND
	Through-hole - 1:Through-hole - 1, M2 Mounting Hole:～	GND
	Through-hole - 1:Through-hole - 1, U1:TESTEN	GND
	Module9:RST, U1:GPIO12	LORA_NRST
	Module9:PB6, U1:GPIO0	LORA_RX
	Module9:PB7, U1:GPIO1	LORA_TX
	Module7:Trace 3e90, U1:GPIO10	MIC_SDA
	U1:GPIO17, Module5:SD_CLK	SD_CLK
	U1:GPIO18, Module5:SD_CMD	SD_CMD
	U1:GPIO19, Module5:SD_DATA0	SD_DATA0
	U1:GPIO20, Module5:Trace b976	SD_DATA1
	U1:GPIO21, Module5:SD_DATA2	SD_DATA2
	U1:GPIO22, Module5:SD_DATA3	SD_DATA3
	Module3:Trace 284c, Trace b5c3:Trace b5c3	VBAT
	U1:XIN, Module1:XIN	XIN

Deprecated Rules

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

Layers with Multiple Fills • 2

	Layer	Net
	All	GND, GND, GND, GND, GND, GND, GND, GND, GND
	Mid-Layer 2	GND, GND, GND, GND, GND, GND, GND, GND, GND, GND

Floating Copper • 2

	Name
	Trace 284c
	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 • 4

	Designator	MPN
	M2 Mounting Hole	None
	M2 Mounting Hole	None
	M2 Mounting Hole	None
	M2 Mounting Hole	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

5_15 PCB Routing - AutoLayout - Autoroute the GPIOs

Controls

Properties

License

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

Domain

Scientific

Compliance

RoHS

Operating Voltage

3.3 V

Connectivity

LoRaWAN

Human Interface

Buttons

Sensor Interface

Microphone, Temperature Sensor, Humidity Sensor

Data Storage

SD Card

Data Type

Audio

Availability & Pricing

Distributor		Qty 1
	Arrow	$1.10–$1.68
	Digi-Key	$1.46–$1.57
	LCSC	$2.35–$2.53
	Mouser	$1.46
	Verical	$0.35–$0.74

Assets

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hasofukirsch / 5_15 PCB Routing - AutoLayout - Autoroute the GPIOs

Schematic