Launcher Controller Circuit Design

0:00

Autopilot

Work completed

Project description updated with verbose summary and relevant hashtags
System architecture defined via Mermaid flowchart and added to project property, then displayed
Added major active components: USB-C receptacle, U1, U2, U3, U4
Added power passives: polyfuse, TVS diode, L_MP2315, C_IN_MP2315, C_OUT_MP2315_10uF, C_OUT_MP2315_0.1uF, C_BULK_ESP32, C_DEC_ESP32
Added connectivity components: JST XH connectors J1–J4 (motors), J5 (servo), off-board switch connectors, onboard reset SW1, and generic potentiometer R1
Wired reset button and potentiometer to ESP32-C3 RST, GND, 3V3, and GPIO2
Reviewed and updated passive ratings:
- C_IN_MP2315 → 25 V
- All 5 V-rail caps → 16 V
- L_MP2315 current rating → 4 A
- R1 → 10 kΩ, 0.25 W
Researched and set voltage ratings for MP2315, CH224K, and ESP32-C3 to their datasheet limits
Set footprints on MP2315 (TSOT23-8) and TB6612FNG (SSOP-24); configured R1’s package; set board stackup to Standard 4 Layer
Paused for user review of board size and mounting solution

Tasks I cannot perform

Replace CH224K or TB6612FNG/MP2315 based on voltage-rating criteria
Assign footprints to the USB-C receptacle, CH224K, and ESP32-C3 module
Retrieve PCB layout extents, calculate board dimensions, and resize the board
Add mounting holes and assign power/ground pours

Success criteria status

USB-C PD path with polyfuse/TVS and CH224K: not fully configured or routed
MP2315 step-down design: components placed but nets not routed
TB6612FNG motor connections: connectors placed but VM and motor nets not wired
Servo and ESP32-C3 power rails: connectors placed but rails not routed
Off-board switches: connectors placed but nets not routed
Passive/protection components: ✔️ selected and rated appropriately

Recommended next step Complete final net wiring and organization:

Route 12 V rail from CH224K → TB6612FNG VM and MP2315 VIN
Route 5 V rail to ESP32-C3 VDD, servo connector, TB6612FNG logic, and switches
Star-connect all grounds and place decoupling caps close to ICs

Once wiring is complete, proceed to schematic review (flux-agentic-workflow step “Schematic review”).

84 days

uoshl

so where's the pcb? I was under the impression that I would have a schematic and pcb designed for use once you were complete. If not, then I have wasted credits on you not doing what I asked?

84 days

flux

1:31

General

Chat History

Project

Knowledge Base

Plan

Explaining layout rules.

Assessing schematic components.

Planning PCB design.

Using Knowledge Base Tool.

Preparing an urgent plan.

You want a finished schematic and a PCB ready to use. I can create the full schematic and prepare the PCB, then you run Auto‑Layout and routing.

Here’s the plan I’ll execute now:

Add and wire USB‑C Receptacle, CH224K (12V/36W), MP2315, TB6612FNG, ESP32‑C3 Module, JST XH (2‑pin×2, 3‑pin), off‑board switch JSTs, Polyfuse, TVS Diode.
Make all net connections (12V and 5V rails, grounds), add CH224K config resistors, decoupling and bulk caps, onboard reset.
Assign/verify footprints and sync to PCB; set board size so it’s ready for placement/routing.

Click Start on the plan bar and I’ll proceed.

Clarify expectations

Constrain board size

Connector details

Power limits

ESP32 IO mapping

84 days

Ready to start.

Show Plan

Reviews

Electrical Rule Checks

Duplicate Designators

Reports components with identical designators.

No-Connect Violation

Reports no-connect pins that are connected.

Pin-to-Pin Conflicts

Reports incompatible pin connections on the same net based on electrical pin types.

Shorted Components

Reports any 2-pin component with both pins connected to the same net.

Missing Power

Reports power input pins that are not connected to a power source.

Single Pin Nets

Reports nets that have only one pin connected.

Missing Designator

Reports components without a designator.

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

Reports missing routed traces between pads in a net.

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.

Missing Footprints

Reports components that need a footprint but don't have one.

Component Review Checks

Incomplete Project Info

Reports the project when the name or description haven't been modified from the default.

Missing Properties • 1

	Designator	Missing Property
	Project	Datasheet

Reports the project or terminals when critical properties are missing: Manufacturer Part Number, Manufacturer Name, Datasheet, Part Type, Designator Prefix, or Pin Number.

Missing Terminals

Reports the project when no terminals are present.

Missing Parametric Symbol Properties • 11

	Designator	Missing Properties
	CC1	Pin Group, Pin Orientation, Section
	CC2	Pin Group, Pin Orientation, Section
	CFG1	Pin Group, Pin Orientation, Section
	CFG2	Pin Group, Pin Orientation, Section
	CFG3	Pin Group, Pin Orientation, Section
	DM	Pin Group, Pin Orientation, Section
	DP	Pin Group, Pin Orientation, Section
	GND	Pin Group, Pin Orientation, Section
	PG	Pin Group, Pin Orientation, Section
	VBUS	Pin Group, Pin Orientation, Section
	VDD	Pin Group, Pin Orientation, Section

Reports terminals that are missing parametric symbol properties (pin group, pin orientation, section).

System Checks

Auto-Layout

Beta

Reports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.

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
15.3k
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

CH224K

Controls

Properties

Manufacturer Name

WCH(南京沁恒)

Designator Prefix

Manufacturer Part Number

CH224K

LCSC Part Number

https://www.lcsc.com/search?q=C970725

Package or Case Code

ESSOP-10_L4.9-W3.9-P1.0-LS6.0-TL-EP

Part Type

USB ICs

JLCPCB Part Class

Extended Part

Input Voltage

4 to 22 V

Power

100 W

System Architecture

```mermaid flowchart TD USB_C["USB-C Receptacle"] --> POLYFUSE["Polyfuse"] POLYFUSE --> TVS_D["TVS Diode"] TVS_D --> CH224K["CH224K PD Trigger"] CH224K --> RAIL12V["12V Rail"] RAIL12V --> TB6612FNG["TB6612FNG Motor Driver"] RAIL12V --> MP2315["MP2315 Buck Converter"] MP2315 --> C_BULK["Bulk Capacitors"] MP2315 --> C_DEC["Decoupling Capacitors"] MP2315 --> L_INDUCTOR["Buck Inductor"] MP2315 --> RAIL5V["5V Rail"] RAIL5V --> ESP32C3["ESP32-C3 Module"] RAIL5V --> SERVO_CONN["Servo Connector"] RAIL5V --> OFF_SWITCH["Offboard Switches"] TB6612FNG --> MOTORS["DC Motors Connector"] ESP32C3 --> RESET_BTN["Reset Button"] ```

Availability & Pricing