Questions tagged [usb-c]

USB (Universal Serial Bus) Type C, a 24 pin connector system with a rotationally symmetrical connector. Consider using the "USB" tag in addition to this one.

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How does USB passthrough charging work?

I am currently making a keyboard for a phone. It connects to the phone using USB-C. I'd like to be able to charge the phone while the keyboard is connected, so I need some kind of pass-through ...
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USB-C passthrough (including CC line) not making connection

I'm trying to make a USB-C switcher. I'm using a rotary switch (center) to have one input USB-C receptacle switch between two output receptacles. This is so I can plug my keyboard into the input and ...
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C-type cable trying to make an OTG cable but only 3 wires - black, red, and blue

I have a C-type cable with only three wires. I took apart the cable to get a better look inside and I only have 3 solder points. I'm trying to make an OTG host of the C cable that I have. Where do I ...
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USB-C to 3.0 Micro-B cable not working

My new Intel Realsense D405 camera came with a USB-type B 3.0 (PC) to Micro-B (CAM) cable. This works well. Now I want to connect the camera via a USB-C to Micro-B cable from Adt-Link (China) This ...
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30 votes
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Why can't USB-C receivers be as small as their USB-A counterparts?

We're all familiar with the USB-A 2.4 GHz receivers from companies like Logitech that are absurdly small and barely protrude from the port. But when looking at available USB-C equivalents, they are ...
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Splitting a USB-C for aux power

I'm building a mechanical keyboard and I need more current from my PC than I can get from one usb port. Can buy/make a usb splitter that I can plug into two A ports on my PC and plug into my USB-C MCU?...
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3 votes
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Replacing keyboard USB-A cable with a USB-C female connector

I have a keyboard with a long non-detachable USB-A cable that I would like to replace with a USB-C female connector. My end goal is being able to detach the keyboard like a portable device and use it ...
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How to get more current out of a simple USB-C breakout board

Trying to see if anyone has experience with USB breakout boards. I am trying to get more current out of this setup and I can't figure out what I am doing wrong. I am using a simple USB-C board (...
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Can I wire this USB-C breakout board to this Micro-USB breakout board?

I've a set of these: I want to use them to create a micro-usb to usb-c converter cable. To allow me to plug a microcontroller with a micro-usb socket (such as a Teensy) into a USB-C socket. The key ...
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USB-C cable PCB

I'm trying to emulate USB cable by FFC and Flat connectors ( I-PEX_20535-020E-02 ) but I don't know if it is possible use 2 layers for the pcb design. In TI Superspeed guides (SLLA414) they advice you ...
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Correct pinout for USB-C 24 pin (16+8) rep

Can someone who has used these components please assist me in determining which is the correct pinout: My pinout downloaded from Digikey site: Another pinout found on Google: So which one is correct?...
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USB-C data-only cable for phone to battery-powered accessory

Basically I have phone and a battery powered USB/Bluetooth controller. The Bluetooth connection isn't great, so I want to use it wired. However it drains my phone battery to recharge its own. I'd ...
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USB-C power negotiation

We designed a power board that can deliver 5V and 3V3. Those two voltages are provided by two boost/buck converters that can deliver 3A each. The board accepts power from a USB-C socket which is ...
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3 votes
2 answers
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Crossing USB Type-C wires on debug probe

I plan to make debug probe that allows me analyze traffic on USB Type-C cable. I want to make blue middle board from the following schametic: From my point of view right port of the my board is ...
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USB-C used only as analog tranmission line and not as intended?

For a side project I was planning on using a connector with about 20 lines/pins and as small as possible. The USB-C popped into my mind since it contains many lines (24), it's very cheap nowadays and ...
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USB-C device (UFP) sourcing power?

I would like to design a device with an USB type C connector, USB2.0 only, no PD function, UFP data role but the power role is source only. The device is a self-powered peripheral that sources energy ...
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How to wire USB-C connector?

I am trying to add USB-C to an ESP32 module. I am using a [CP2102][1] This is the USB-C connector I was planning to use, simply because JLCPCB has tons of them and ...
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How do I connect USB Type-C signals to a USB Type-A connector?

I am designing a USB hub circuit by using USB7002. It gives out two USB 3.2 Gen 1 ports with Type-C support. Each of these two ports has two pairs of RX and TX differential pairs (SS-RXA, SS-RXB, SS-...
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using USB-C for connecting pins on esp32 to buttons and analog joystick

I'm trying to connect buttons and a Joystick that are on one board with an ESP32 on another board. I'm trying to keep it as simple as possible and just connect a pin to ground to tell me when a button ...
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Adding USB charging port to trimmer, question about voltage

I'm fairly unexperienced with electronics, but I'm currently working on what should be a relativly easy project, but I have a few questions and maybe you can help me. I recently found an old beard ...
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connecting USB2.0 to USB Type C plug

I have a camera that connects to USB2.0 Type A I would like to connect it to my laptop that has a USB Type C receptacle.. I can't use a converter. What is the wiring diagram for this solution? I have ...
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USB-PD Power negotiation protocol

Can a USB-PD UFP port (Monitor) negotiate voltage/power directly from a laptop power supply - not sure if this is called pass-though mode? Or the Monitor can only negotiate USB-PD with the Laptop… and ...
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Correct lead routing for USB micro-b (male) to USB A and USB type C (+ mini HDMI)

I am trying to put together a custom adapter PCB to plug into a Raspberry Pi Zero/Zero 2 W so I can avoid using multiple adapter cables. On the Pi end, it'll have male plugs for mini HDMI, micro USB (...
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Do I need to connect all pins of USB 4085 or can I use only the first row?

I would like to add a THT USB-C for hand soldering to my PCB. I found this on KiCad: https://gct.co/connector/usb4085 (Full schematics) D+ and D- are differential pairs. Do I need to connect all of ...
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USB-C -> USB-C (power) + USB-A (data) splitter cable

I need to make a splitter cable that would allow to charge my iPad (with a USB-C port) from a USB-C charger and at the same time transfer data to another device via USB-A connector. There’s a similar ...
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USB-C PD Source / Sink capable IC

Does anyone know of a combined source / sink IC for USB-C PD? Ideally, one that is rather simple to configure, by holding configuration pins to ground or similar. This is not super necessary though. ...
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USB C 2.0 Receptacle shield connection [duplicate]

I want to know if I should also connect the shield pin (Pin S1) in my schematic to GND or should I leave it not connected?
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Can you do type-C USB DRP, UFP data, sourcing device with CC controller only?

I would like to implement a USB Type-C DRP UFP-data power-source device. This device has access to current so I would like it to behave as a power sourcing device. An example would be a USB ('slave') ...
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2 answers
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How does USB-C powerbank know if I want it to charge or be charged? [closed]

A while back, I tried to use a USB-C powerbank (I think it was a Ravpower "PD Pioneer 20000 mAh, 60 W Portable Charger") to charge a laptop that was powered by USB-C (a new Lenovo). The ...
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Are USB cables active circuits?

I always assumed a USB cable between two devices is just a collection of wires. I recently saw some pictures when shopping for cables indicating they have internal circuitry. Could someone clarify if ...
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How to use Type C receptacle to power the device

I'm designing a device which I want to be powered from a phone or tab charger through a standard USB cable. The device doesn't have any MCU, so it cannot communicate via USB. In fact, it is a sort of ...
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Use USB-C breakout board to connect TOF-sensor to an Arduino

I need some help with connecting my VL53L0X - TOF sensor to my Arduino Nano Every. I already connected it and am reading three sensors successfully over the I2C bus. I now want every sensor to be ...
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2 votes
1 answer
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Can USB-C PowerDelivery be restricted to manufacturers devices? [closed]

I have recently searched for a new monitor. I'd like to have a single-cable setup via USB-C, so I need a monitor that supports PowerDelivery. I found a good match (from HP) but looking into reviews on ...
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USB-C Charging with TPS25740B Questions

I am using the TPS25740B(datasheet) as a usb-c PD controller. I am confused why it can only output 60W with receptacle. From the datasheet: Later it says: Question 1: Does this mean current should ...
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Crafting a Superspeed USB Type-C port out of two ports on a USB 3 hub?

I am designing a “simple” USB-C Hub, that will have two downstream facing USB-C ports (and nothing else), both supporting USB 3 speeds. I have solved some of the challenges already- VCONN, power ...
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STUSB4500: Usecase for 50mV fine adjustment?

To power a scanner, I need 7.2V at 1.5A. So I got STM's EVAL-SCS001V1 breakout board built around the STUSB4500 USB PD sink controller. In the datasheet it says about the two configurable PDO profiles:...
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2 votes
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Using a USB-C receptacle for printhead wiring

I want to create a toolhead PCB for a 3D printer. Due to lack of space for a proper connector (i.e. a 2x8 Molex Microfit), I wanted to use a 24 pin USB-C receptacle. For that, I made a first, very ...
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Leakage current 2-pin usb-c charger [closed]

since I began using a 2-prong usb-c charger, i have noticed a vibrating sensation when moving my hand over the metal body of my laptop. If i ground myself, the vibration gets stronger. If I use the ...
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1 vote
1 answer
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Why does a usb c adapter not offer voltage under load

I have bought a usb c pd board (12V) (https://www.aliexpress.com/item/4000460866867.html) and such a GnA usb c charger (https://www.amazon.de/-/en/UGREEN-Charger-Supports-Compatible-MacBook-black/dp/...
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2 votes
2 answers
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USB C Mod not working with high wattage PD cables

I made a USB C mod for my calculator. I wired all the Vbus, ground, D+, and D- pins to the corresponding mini B traces. Also did the 5.1K resistor as a pd from CC to ground so that USB C to C would ...
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1 vote
1 answer
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Choosing Inductor for dc-dc converter USB-C Application

I am a high school student working on building a USB-C charger using TPS25740B(93 W) (datasheet) as the PD controller and MC34167 (datasheet) as the dc-dc converter. I am a little confused as to how ...
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DC powered USB wall faceplate

Looking to make a USB Power Delivery faceplate to install within a wall. Looking to feed the faceplate from a 48V DC Bus that I have available. Looking to get ideally x2 USB C connectors and x2 USB A ...
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Problems turning USB-A mouse dongle to USB-C

today I was trying to turn my old USB-A mouse receiver to an USB-C mouse receiver. I was using an USB-C plug of an old broken USB-C to USB-A/Ethernet-Adapter (similar to the one in the picture), it ...
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4 votes
1 answer
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DIY USB-C Coupler with two receptacles

I need to create a USB-C coupler that connects two USB-C cables, passes the data from one to another while splitting out the USB 2.0 signal from the incoming USB-C plug to an additional receptacle or ...
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USB-C camera wired for USB 2.0 in circuit layout

I'm a bit confused about the USB 2.0 portion of a USB-C pinout. We have two cameras that operate over USB-C, but they are also compatible with USB 2.0 because we can use them successfully through USB ...
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2 votes
1 answer
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JRC-B008 for USB-C Microcontroller Power Supply

I would like to use these exact female USB-C ports (labeled JRC-B008): to power a microcontroller at 5V. Soldering the V -> ...
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USB Downstream Port (with Power Charging) [closed]

I have a Dell UltraSharp 32 4K USB-C Monitor: U3219Q with a USB Downstream Port (with Power Charging). I have the monitor connected to my laptop via USB-C. If I connect a USB device (let's say an ...
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Using USB-C charger D+ and D- pins for comms with an STM32 chip

I'm looking at the MAX77751 single cell Li-Ion and LiPo charger chip that features both USB-C and USB 2.1 detection. The battery would power a design that uses an STM32L433CCUx chip which has another ...
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2 votes
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Converting a full-size USB-B port to USB-C

I need to replace the USB-B port on a device since the port is failing on me, and I'm curious how stupid it would be to attempt to make some sort of daughterboard that sits on top of the USB-B ...
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Create a transmission through PCIE lines or Ethernet lines

I'm working on a data transmission design. I would like to create a data transmission from a Raspberry Compute Module 4, but I don't know what is the better way to do that. A USB-C is required, and ...
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