summerexe / Jiji v3

Loaded

0

1

Files

Schematic

PCB

Log InSign Up

Testing USB-C Switch Connections

flux

1:16

Analyzing user questions.

Following tool usage rules.

Verifying switch connections.

Proposing multimeter tests.

Accessing knowledge base.

Analyzing the schematic.

Confirming multimeter testing steps.

Yes—your switch not being tied to GND is correct for how you wired it. In your schematic, the switch is in series on the 5 V rail:
  • J6 VBUS (“Net 3”) enters SW1 on pin 2.
  • The switched 5 V rail (“5V_SW”) leaves SW1 on pin 3 and goes to your loads and bulk caps.
  • GND is only used by the USB-C CC pull-downs: R1 and R2 are 5.1 kΩ to GND for CC1/CC2, which is also correct.
Quick multimeter checks
Do these with power disconnected first (continuity/ohms), then with power applied (voltage).
  1. Unpowered continuity/ohms
  • CC resistors:
    • Measure between J6 CC1 pad and GND: ≈ 5.1 kΩ (through R1).
    • Measure between J6 CC2 pad and GND: ≈ 5.1 kΩ (through R2).
  • VBUS A/B tie:
    • Measure between J6 VBUS_A and VBUS_B pads: ~0 Ω (they’re shorted together on “Net 3”).
  • Switch continuity:
    • Probe SW1 pin 2 to pin 3.
    • In the ON position: ~0 Ω (closed). In the OFF position: open (infinite).
    • If unsure which position is ON, flip it and watch the reading change.
  • Short check:
    • Measure between 5V_SW (e.g., the positive pad of C1 or Pin 2 of J3/J4) and GND: should NOT be a short (expect high resistance).
  1. Powered voltage checks (use a current-limited USB supply if possible)
  • Plug in a USB-C source.
    • J6 VBUS (either A or B VBUS pad) to GND: about 5.0 V.
  • With switch OFF:
    • 5V_SW (e.g., C1 positive, or J3/J4 Pin 2) to GND: ~0 V (may float slightly).
  • With switch ON:
    • 5V_SW to GND: about 5.0 V.
If any reading deviates:
  • No 5 V on J6 VBUS with cable plugged: recheck soldering on the USB-C VBUS pins and the CC pull-downs (R1, R2).
  • 5V_SW never gets to 5 V: verify SW1 pin 2 is truly on J6 VBUS (“Net 3”) and pin 3 is on “5V_SW”, and confirm switch continuity in the ON position.
  • Any short to GND: inspect for solder bridges on J6 VBUS/CC/GND pins and the switch pins.
Want me to mark a few easy probe points on your schematic for these measurements?
67 days
summerexe

summerexe

with the power on, how to check is sw1 is getting power
67 days

flux

1:45

Reviewing power board checks.

Validating connection measurements.

Connecting and measuring components.

Simplifying the instructions.

Accessing knowledge base.

Creating concise steps for checking SW1.

Here’s the quickest way to verify SW1 is receiving power (with the board powered):
  • Set DMM to DC volts. Put the black probe on a ground pad of J6 (GND_A/B).
  • Check USB 5 V is present: red probe on J6 VBUS pad to ground. Expect about 5.0 V.
  • Check SW1 input (pin 2): red probe on SW1 pin 2 to ground. Expect about 5.0 V if the switch is getting power from VBUS.
To confirm SW1 is passing power:
  • Switch OFF: red probe on SW1 pin 3 (output) or the 5V_SW rail (e.g., positive pad of C1) to ground should read ~0 V.
  • Switch ON: the same point should read about 5.0 V.
  • Optional: measure between SW1 pin 2 and pin 3 directly when ON; the drop should be ~0 V.
If SW1 pin 2 is not ~5 V but J6 VBUS is, recheck solder on SW1 and the trace from J6 to SW1:2. If 5V_SW is 5 V even when OFF, look for a solder bridge shorting SW1:2 to SW1:3.
Probe SW1 pin 2
Check SW1 output rail
Verify connector power
Multimeter test points
67 days
​
Sign up to send
C3
Capacitance
22uF
U1 3V3 - J1 Pin_7
U2 Vin - U1 5V
U4 I/O - U1 GPIO14
J4
U3 GND - U4 GND
U3 GND - U4 GND
J5

Reviews

  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    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
    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
    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
    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
    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
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
    1.1M

Jiji v3

ESP32-S3 CAM Audio-Visual Controller with I2S MEMS Microphone, Class-D Amplifier, SPI Display, Servos, Capacitive Touch and Integrated USB-C Power-Only Sink (VBUS via J6 -> 5V_IN -> SW1:P1 -> 5V_SW, CC1/CC2 5.1 kOhm to GND, VBUS TVS Surge Protection) + Added optional bulk electrolytic caps on 5V_SW near servo headers

Properties

Diagram



  
    
  
  
    
  
























"J6 VBUS"
"5V_IN"
"J6 VBUS__1"
"SW1:P1"
"5V_SW"
"Existing node_5V consumers"
"J6 CC1"
"R_CC1 5.1k"
"J6 CC2"
"R_CC2 5.1k"
"GND"
"VBUS TVS diode"

Pricing & Availability

Distributor

Qty 1

Controls

Welcome 👋

Flux helps you build PCBs faster with an AI teammate!

Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.

      Introducing AI Placement!
      AI Placement Demo

      AI-Powered Component Placement

      Let AI place your components intelligently. AI Placement analyzes your schematic and positions components for optimal routing, signal integrity, and board density.

      From Schematic to Layout in Seconds

      Skip the tedious manual placement. AI Placement generates a starting layout you can refine, saving hours of repetitive work on every new design.

      Works With Auto-Layout

      Pair AI Placement with Auto-Layout for a complete AI-driven PCB design flow — from component placement through trace routing, all with one click.

      Try it