Testing USB-C Switch Connections

Thought for 3 sec

Yes — usually yes. The large side physical pads / shell tabs of the USB-C connector J6 are normally connected to GND/shield, so they are a good place to solder the converter negative if your board connects them to GND.

Before soldering, confirm with the multimeter with power disconnected:

Set meter to continuity or ohms.
Put one probe on a known GND point, like:
- a GND pin on a header,
- negative side of an electrolytic capacitor,
- USB-C GND pin/pad if accessible.
Put the other probe on the side metal pad/tab of J6.
If it beeps or reads near 0 Ω, that pad is GND and you can use it.

Do not use it if it does not beep to GND.

Also: soldering to the side tabs can take more heat because they are large metal/mechanical pads. Make sure the joint is solid, and add strain relief for the battery/converter wires so they don’t rip the USB-C connector off the board.

summerexe

i mean the hole of the J6, not pads of J6

Thought for 4 sec

flux

Yes — if you mean the large mounting holes/through-holes for the USB-C connector shell tabs, those are usually tied to GND/shield and can often be used for the converter negative.

But confirm before soldering:

Power disconnected.
Multimeter in continuity mode.
Probe one J6 mounting hole metal plating / shell tab hole.
Probe a known GND point, like a GND header pin or the negative side of a capacitor.
If it beeps / reads near 0 Ω, you can connect the converter GND there.

Do not use it if it does not beep to GND.

Also, avoid putting too much mechanical force on that hole/wire because it is part of the USB-C connector mounting. Add glue/strain relief if the wire might move.

Mark battery solder points

Verify J6 hole ground

Add battery connector

Check power safety

Choose converter module

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Project Name

Jiji v3

Description

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

System Architecture

Diagram

Pricing & Availability

Distributor	Qty 1

Controls

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summerexe / Jiji v3

Schematic