Schematic for ESP-WROOM-02D Reference Design: This project is a...

Power and Signal Connector Setup

flux

1:14

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USB1

Analyzing design intents.

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Starting 1 component search

Dispatching Library tool to find: "3-pin Screw Terminal Block"

Creating search plan for: "3-pin Screw Terminal Block"

Searching: "Looking for a PCB-mounted screw terminal block with 3 connection points. This component is used to quickly and securely connect wires, typically in low- to moderate-current applications. The search should focus on parts with a robust screw clamp design and typical dimensions for board edge or panel mounting."

Searching: "Seeking a screw terminal block designed for PCB mounting that offers 3 pins for wiring connections. The part should feature a durable mechanical design suitable for industrial or control circuit applications with ease of installation and reliable clamping force."

Searching: "Searching for a three-position screw terminal intended for PCB applications. This component must support three separate wiring connections with screw fastening, ensuring secure electrical contact in environments where moderate current capacity and robust design are required."

Found 49 results.

Searching: "3-pin Screw Terminal Block"

Completed 1 component search.

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Recommending a component.

Below is the component to add for handling the 12 V power, ground, and external signal:

Table

Part Name	Purpose	Manufacturer Part Number	Quantity	Footprint	Datasheet link
3-Pin Screw Terminal Block	Provides secure, removable connections for 12 V input, ground return, and signal line	XY301V-A-5.0-3P	1	Through-Hole 5 mm pitch	PDF

Would you like me to add this component to the schematic?

136 days

minado0709

Yes

136 days

flux

0:21

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Checking if I can make the changes for you.

Here’s the component to be added to your schematic:

Table

Part Name	Purpose	Manufacturer Part Number	Quantity	Footprint	Datasheet link
3-Pin Screw Terminal Block	Provides a secure, removable interface for routing 12 V power, ground return, and signal	manufacturerPartNumber	1	Through-Hole, 5 mm pitch	PDF

Shall I go ahead and add this to your design?

136 days

Ready.

please explain what VBUS does.

magdykhedr

@copilot please explain what VBUS does.

copilot

In your ESP-WROOM-02D reference design project, VBUS is essentially serving as a power input source that is connected to the USB-C connector (USB1). Specifically, VBUS is the voltage supplied by the USB port. Here's how it functions within the context of your design:

VBUS Connection: It is directly connected to the USB1 connector's VBUS pins (pins 15 and 16). This is a standard approach in USB-powered devices, where VBUS represents the +5V supply provided by the USB port.
Role in the Circuit:
- Power Supply: VBUS is used as an input to the onboard voltage regulator (U1, a 3.3V regulator, AMS1117-3.3). The regulator then steps down this voltage to 3.3V, which is used to power the ESP-WROOM-02D module (ESP1) and other 3.3V components in the circuit.
- Diode (D1): A diode (D1, 1N5819HW-7-F) is placed between VBUS and the input to the voltage regulator. This diode ensures that power flows in the correct direction—from the USB port to the regulator and the rest of the circuit—and also provides reverse polarity protection.
Current Limitation: The current available from VBUS is limited by the USB specification. For standard USB 2.0 ports, this is up to 500 mA, while for USB 3.0 and newer standards, it can be higher. Your design should ensure that the total current consumption of all components, including the ESP-WROOM-02D, does not exceed this limit.
Use in Design:
- It is crucial for powering the device when connected to a computer or USB power adapter.
- It facilitates programming the ESP-WROOM-02D through the USB-C port, in combination with the CH340C USB to Serial converter (IC1).

In summary, VBUS within your project is a critical net that delivers power from the USB-C connector to the voltage regulator and subsequently powers the entire circuit. It's the entry point for external power and interacts with several components to ensure the circuit operates correctly and safely.

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ESP_RX

TOUT

ESP1

ADC

C11

Capacitance

0.1u F

Resistance

82k Ω

GPIO15

GPIO14

Capacitance

10u F

Resistance

220k Ω

ESP_IO0

Capacitance

0.1u F

GPIO16

GPIO5

+3V3

GPIO13

TOUT

GPIO12

C10

Capacitance

0.1u F

+3V3

GPIO4

ESP_EN

GPIO2

Resistance

10k Ω

ESP_TX

Resistance

10k Ω

ESP_IO0

BOOT

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 • 32

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

Airwires

Reports missing routed traces between pads in a net.

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 • 23

	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
	J1	None
	J2	None
	PWR	None
	R1	None
	R2	None
	R3	None
	R4	None
	R5	None
	R6	None
	R7	None
	R8	None

Parts Available

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System Checks

Auto-Layout

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Passive Components

Resistor Power Rating

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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

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Checks that IC pins that require pull up or pull down resistors have them.

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Capacitor Voltage Rating

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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

ESP-WROOM-02D Reference Design

Controls

Properties

License

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

Availability & Pricing

Distributor		Qty 1
	Digi-Key	$1.06–$2.47
	LCSC	$3.12–$3.64
	Mouser	$2.42

Assets

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