Schematic for WiFi Camera Reference Design: This project uses an...

IC1 USB-to-UART Overview

hari341

Please explain what @IC1 does.

183 days

flux

0:44

General (prev)

Project

BOM

File

IC1

Using BOM Tool.

Looking for "General Description" in Jiangsu-Qin-Heng-CH340C_C84681.pdf

IC1 is a CH340C USB-to-UART bridge. It converts the USB bus signals (VBUS, D+, D–) into TTL-level serial signals (TXD, RXD, RTS#, CTS#) so your ESP32 (and other MCU pins) can communicate over USB as a virtual COM port on a host PC. It’s powered directly from the USB 5 V supply (VBUS) and supports VDD at 5 V, 3.3 V, 2.5 V or 1.8 V.

Key functions (from the datasheet):

USB full-speed (12 Mb/s) interface to the host.
TTL-level UART interface with hardware flow-control support.
On-chip clock generation (no external crystal needed for CH340C).
Enables firmware upload, serial logging, and USB-based communication for the microcontroller.

Datasheet: PDF

Request decoupling spec

Add decoupling cap

ESD protection parts

Cap placement guidelines

USB pull-up resistor

183 days

Ready.

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 72

Des	Net	Des	Net
C4:P2	GND	Trace 4d89	Net 51
C8:P2	GND	Trace 4d89	Net 51
ESP1:EXP	GND	Trace 712d	Net 2
ESP1:EXP	GND	Trace 3cff	Net 7
ESP1:EXP	GND	Trace 52f4	Net 7
ESP1:EXP	GND	Trace f49a	Net 7
ESP1:EXP	GND	Trace f49a	Net 7
ESP1:EXP	GND	Q1:D	Net 41
ESP1:EXP	GND	Q1:D	Net 41
ESP1:EXP	GND	Trace b62f	Net 41
ESP1:EXP	GND	Trace b62f	Net 41
ESP1:EXP	GND	Trace b62f	Net 41
ESP1:EXP	GND	Trace d9b5	Net 41
ESP1:EXP	GND	Trace ff26	Net 41
ESP1:EXP	GND	R9:P1	None
ESP1:EXP	GND	R9:P1	None
ESP1:EXP	GND	R9:P2	None
ESP1:EXP	GND	R9:P2	None
Q1:G	Net 2	Trace b957	Net 41
Q1:G	Net 2	Trace e246	Net 41
Trace 12bd	Net 2	ESP1:EXP	GND
Trace 12bd	Net 2	ESP1:EXP	GND
Trace 129e	Net 2	ESP1:EXP	GND
Trace 129e	Net 2	Trace b957	Net 41
Trace 129e	Net 2	Trace e246	Net 41
Trace 6258	Net 2	Trace a512	Net 41
Q1:S	Net 5	Trace a512	Net 41
Q1:S	Net 5	Trace e246	Net 41
Trace 165e	Net 5	Trace a512	Net 41
Trace 165e	Net 5	Trace e246	Net 41
C4:P1	Net 7	ESP1:IO13	Net 25
C8:P1	Net 7	ESP1:GND	GND
C8:P1	Net 7	ESP1:IO12	Net 30
ESP1:3V3	Net 7	Trace 545b	Net 10
Trace 0d6c	Net 7	ESP1:EXP	GND
Trace 26a3	Net 7	Trace 61d2	Net 12
Trace 26a3	Net 7	Trace 39af	Net 28
Via	Net 7	ESP1:EXP	GND
Via	Net 7	R9:P1	None
Trace b555	Net 10	Trace eb71	Net 51
ESP1:IO13	Net 25	Trace 63a0	Net 7
ESP1:IO13	Net 25	Trace a1ff	Net 7
ESP1:IO12	Net 30	Trace d974	Net 7
ESP1:IO27	Net 33	Trace be28	Net 7
ESP1:SENSOR_VN	Net 45	Trace 8136	Net 41
ESP1:SENSOR_VN	Net 45	Trace f1b1	Net 41
ESP1:IO34	Net 47	Trace 8136	Net 41
ESP1:IO35	Net 49	Trace 404c	Net 41
ESP1:IO35	Net 49	Trace 8136	Net 41
ESP1:IO32	Net 51	Trace 399a	Net 10
ESP1:IO32	Net 51	Trace b555	Net 10
ESP1:IO32	Net 51	Trace 3aaa	Net 41
ESP1:IO32	Net 51	Trace 404c	Net 41
Trace 4d89	Net 51	Trace c81a	Net 7
Trace 4d89	Net 51	Trace 6e70	Net 28
Trace 4d89	Net 51	Via	Net 28
ESP1:IO26	Net 53	Trace 3f1f	Net 7
ESP1:IO26	Net 53	Trace 8e5f	Net 7
ESP1:IO26	Net 53	Trace be28	Net 7
Trace 4caa	Net 54	Trace 614f	Net 2
Trace 4caa	Net 54	Trace cc3c	Net 5
Trace 4caa	Net 54	C1:P1	Net 7
Trace 4caa	Net 54	Trace 6c97	Net 7
Trace 4caa	Net 54	Trace 7e68	Net 7
Trace 4caa	Net 54	Trace 7299	Net 7
Trace 4caa	Net 54	Trace 5a7b	Net 41
ESP1:IO25	Net 55	Trace 8e5f	Net 7
ESP1:IO25	Net 55	Trace d210	Net 7
ESP1:NC	None	IC1:GND	GND
ESP1:NC	None	Trace ed65	GND
ESP1:NC	None	Via	GND
ESP1:NC	None	IC1:TXD	Net 28

Invalid Layer

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

Component Overrides • 41

	Designator	Ruleset
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊

Airwires • 44

	Designators	Net
	C4:P2, C1:P2	GND
	C8:P2, C3:P2	GND
	ESP1:EXP, ESP1:EXP	GND
	ESP1:EXP, ESP1:EXP	GND
	ESP1:EXP, ESP1:EXP	GND
	ESP1:EXP, ESP1:EXP	GND
	ESP1:EXP, ESP1:EXP	GND
	ESP1:EXP, ESP1:EXP	GND
	J1:Pin_8, ESP1:GND	GND
	U2:GND, C15:P2	GND
	R8:P2, Trace dc20:Trace dc20	Net 7
	Trace 4a04:Trace 4a04, ESP1:3V3	Net 7
	Trace 8125:Trace 8125, Via:Via	Net 7
	ESP1:IO0, Trace df42:Trace df42	Net 10
	ESP1:TXD0, Trace fc09:Trace fc09	Net 12
	ESP1:IO2, Trace bd9f:Trace bd9f	Net 17
	ESP1:IO33, Trace ae9a:Trace ae9a	Net 18
	ESP1:IO5, Trace 2f43:Trace 2f43	Net 19
	ESP1:IO15, Trace b743:Trace b743	Net 24
	ESP1:IO13, Trace 9d1e:Trace 9d1e	Net 25
	ESP1:IO14, Trace dc3b:Trace dc3b	Net 26
	J1:Pin_3, ESP1:RXD0	Net 28
	ESP1:IO4, Trace 82da:Trace 82da	Net 29
	ESP1:IO12, Trace e442:Trace e442	Net 30
	ESP1:IO27, Trace aac4:Trace aac4	Net 33
	ESP1:IO18, Trace cbb9:Trace cbb9	Net 34
	C19:P1, C11:P1	Net 35
	OV2640 :4, C11:P1	Net 35
	U3:VO, C19:P1	Net 35
	ESP1:IO19, Trace ae56:Trace ae56	Net 36
	ESP1:IO21, Trace 7302:Trace 7302	Net 37
	Trace 8136:Trace 8136, ESP1:EN	Net 41
	Trace f1b1:Trace f1b1, Trace 22e7:Trace 22e7	Net 41
	ESP1:SENSOR_VP, Trace 185a:Trace 185a	Net 43
	ESP1:IO22, Trace af64:Trace af64	Net 44
	ESP1:SENSOR_VN, Trace 041b:Trace 041b	Net 45
	ESP1:IO34, Trace 2a79:Trace 2a79	Net 47
	ESP1:IO35, Trace 6b91:Trace 6b91	Net 49
	ESP1:IO32, Trace 6afc:Trace 6afc	Net 51
	Trace 6afc:Trace 6afc, Trace eb40:Trace eb40	Net 51
	Trace 7b46:Trace 7b46, ESP1:IO26	Net 53
	ESP1:IO23, Via:Via	Net 54
	ESP1:IO25, Trace 0bb5:Trace 0bb5	Net 55
	Fill:Fill, ESP1:GND	None

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 • 3

	Name
	Trace 1ca2
	Trace 3911, Trace c487, Trace f587, Trace 9e5a, Trace aa1b
	Trace 4caa

Protected Intrusions

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

Manufacturing

Manufacturer Part Number • 33

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	C5	None
	C6	None
	C7	None
	C8	None
	C9	None
	C10	None
	C11	None
	C12	None
	C13	None
	C14	None
	C15	None
	C16	None
	C17	None
	C18	None
	C19	None
	J1	None
	J3	None
	PWR	None
	R1	None
	R2	None
	R3	None
	R4	None
	R5	None
	R6	None
	R7	None
	R8	None
	R9	None
	R10	None
	R11	None

Parts Available

Beta

Checks that all parts have a part number and are available from distributors.

System Checks

Auto-Layout

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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
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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
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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
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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
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1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
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1.1M

Inspect

WiFi Camera Reference Design

Controls

Properties

License

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

Availability & Pricing

Distributor		Qty 1
	Arrow	$0.07–$0.16
	Digi-Key	$1.53–$10.60
	LCSC	$1.01–$1.86
	Mouser	$10.76
	TME	$0.00
	Verical	$1.54–$2.13

Assets

Thumbnail

WiFi Camera Reference Design-removebg-preview.png

id=WiFi Camera Reference Design-removebg-preview

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