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Questions tagged [usb-c]

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0
votes
1answer
19 views

Replacing lightning connector with usb-c connector in lightning earphones

I have a lightning earphones, Sennheiser ambeo smart headset. https://en-us.sennheiser.com/finalstop The cables are yellowing, and I wanted to replace them, also I got tired of using this on my ...
2
votes
1answer
58 views

Low-Power over USB

I have a small custom 5V 2mA device which is powered over USB. To be specific, it will be powered over USB by connecting it to an Android smartphone or an iPhone. There is no data transfer. I ...
2
votes
1answer
85 views

Which pin of USB-C to use for analog signal?

I am working on a project which connects a microcontroller to an IR sensor device and decided to use a male-male USB C since I need 5 lines (V,GND,SCL,SDA,ADC). Which pin should I use for my single-...
0
votes
1answer
39 views

What ICs are required to transmit DisplayPort over USB-C alt mode?

If I have a DisplayPort 1.2 source and I wish to transmit the displayport video signal down a USB-C cable to a monitor, do I need a USB C port controller like an EZ-PD CCG6 or could I just connect the ...
0
votes
1answer
50 views

Problems wiring USB-C receptacle [on hold]

(First, sorry for my English :_D) I'm doing a school project and I wanted to swap a male/plug USB-C to a USB-C female/receptacle. I thought it was just soldering the cables onto the board and it's ...
0
votes
1answer
59 views

USB C connector design and resistor placement for USB 2.0 data cable

I have a follow-up question to this one. I have a type C connector with 8 pins. No spec, type C female counterpart reveals G, Vcc, A2, A3, A6, A7. Remaining two pins do not respond to anything. G-Vcc ...
0
votes
2answers
38 views

What would happen if a charger tried to pull more current than a QC 3.0 source can output?

I've got this charger: https://store.dji.com/product/mavic-car-charger It takes 12.7 - 16V input from a car and outputs 13.05V at 6.1A (~80W) I want to utilize a USB-PD and / or USB-C QC 3.0 ...
0
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0answers
27 views

Need to boost 20vdc to 84vdc 90 watts . Is this a taller feat then a 60v boost circuit? going from usbc breakout board fairchild chipset

I've already made one that goes 60volt, but now have a device that needs 84 volts to the input of a BMS (battery management circuit). 90 watts -- OEM charger is 1.45 amps @84 volts. https://www....
-1
votes
1answer
66 views

USB over RJ45 to USB C [closed]

I am working on an Arcade Stick/Fight Stick enclosure. Internally, the PCB (Brook UFB) runs USB over a standard Ethernet cable, to a Neutrik RJ45 passthrough. I typically then create an RJ45 to USB A ...
0
votes
1answer
38 views

USB C Spec Compliant way of splitting power

I'm trying to get a Y Splitter going on, where one of the sides is passthrough on the CC pins and the other side has a step down/buck converter that can take 5-20v input and always do 5v output. I ...
1
vote
1answer
37 views

Modifying USB 2.0 Hub to use an upstream Type C connector won't communicate Data

I have taken a cheap Amazon Basics USB 2.0 Hub and have started soldering wires on it with a USB C plug breakout I bought from Pololu I soldered the Vbus, Gnd, D+ and D- respectively from the USB C ...
0
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0answers
40 views

Creating a USB 3.0 Micro A to USB 3.1 C Adapter [duplicate]

I'm upgrading from a Samsung Galaxy S5 to a new generation phone with a USB C connector, and I don't want to buy new cables since the S5's are in still new condition. So I was hoping to create a USB 3....
3
votes
1answer
123 views

In usb C to audio jack systems, is the DAC in the dongle or in the host? [closed]

I'd like to design my usb-c audio preamp, but that would be possible only if the analog audio comes directly from the phone, so that my piece of hardware can take the power supply from the usb-c and ...
2
votes
0answers
36 views

USB-C Strange voltage bias detected on shield and unconnected pins interfering with signal

I'm having trouble figuring out why there is a 1.8 V bias on the shield and the unconnected pins of my USB-C connector. Some background... I am attempting to use USB-C connectors to connect two ICs ...
2
votes
1answer
113 views

USB-C / USB 3.0 alternate mode as low speed serial port

I want to make a device which can be connected either to a PC with an USB 2.0 connection or to another identical device and have a serial connection. This should be detected acutomatically and I want ...
1
vote
1answer
169 views

USB type-c power supply (up to 20V 5A) from DC source

I have a custom made 5s power bank (30 x 18650 cells) and I want to make a power supply to charge my laptop using this power bank. It's not a big deal to make a 5V charger because I just have to hard ...
0
votes
1answer
192 views

What voltage does a laptop provide over USB C?

I have read a bit already about USB C specification. One thing is not clear for me though. Please take a look at this picture: A device with profile from 1 to 5 can provide a higher voltage on the ...
2
votes
1answer
201 views

Replacing USB-A with USB-C fails [closed]

What I did, step by step: Cut off the USB-A cable from a device. (smart card reader) Cut a USB-C to USB-A cable in half. (cable came with a phone) Soldered the USB-C part (see step 2) to the device (...
0
votes
0answers
73 views

How to create reverse orientation in a custom-made PCB for USB type C 3.0

The whole idea is to make a pass through signal connection between USB-C horizontal connector and USB-C vertical connector on a custom made PCB(it should work on both sides) where the device connects ...
1
vote
2answers
108 views

Can I charge my AC rechargeable hearing aid batteries via USB PD with converter?

I hope you'll be able to help. First of all this is a bit of a complex one that I'm struggling with. I wear hearing aids, both of which use removable, rechargeable batteries, charged only by a charger ...
0
votes
1answer
153 views

USB Cable Resistor Values [closed]

I am in the process of designing a fancy USB type c cable (paracord, colourful heat-shrink, coils etc) And I'm worried about resistor values, I don't want to blow my phones port or the charger. I ...
0
votes
0answers
122 views

Achieving 90R impedance for USB Type C on a four layer board

I have started routing the 90R controlled impedance tracks for the USB. I've got the information from the manufacturer to use a trace width of 0.22mm and trace spacing of 0.125mm to achieve 90R ...
0
votes
1answer
99 views

USB-C superspeed Signal pass through connection issue

The idea was to make a pass through super-speed signal connection (like a cable)between USB-C horizontal connector and USB-C vertical connector on a custom made PCB. where the device connects to the ...
0
votes
1answer
196 views

Splitting power from usb type c charging brick

I did a DIY a portable monitor from a salvaged laptop LCD screen using a controller board I ordered online. Managed to make it work with a power adapter and an HDMI cable. I want to use it with my ...
0
votes
1answer
37 views

ACM2012-900-2P filter can be used on USB 3.0 lines of a Type-C connector?

I have doubts that this CMF is recommended for USB3.0 due to his bandwidth. I am afraid it will filter the USB signal. Can someone explain better the SCCC21 and SDS21 characteristics from here? https:/...
0
votes
2answers
130 views

Datasheet / footprint for this weird USB-C connector?

I've got this SMD USB-C type connector I want to use: It has a single row of 12 pins along the back, presumably meaning the other 12 USB C pins are pre-connected internally. Neat. This also suggests ...
-1
votes
1answer
190 views

OTG + simultaneous charging with USB Type-C cable?

This video shows how to make it with a Micro USB. Is it possible to make the same thing with USB Type-C ? My phone has OTG host function. Thanks! http://youtube.com/watch?v=pH895umr0UA&t=8m43s
0
votes
1answer
159 views

How can I test the resistor on my USB connector?

I have purchased some USB-C connectors that I use to build my own cables with (I have separate "host" and "device" side connectors for various cable assemblies), and I was wondering how I might go ...
0
votes
0answers
73 views

I need to introduce a connector into a USB-C cable

I need to introduce a test system connector in between a few of USB-C 3.1 Data cables, I started with a pin out of 1 to 1 between a few of type C receptacles using a high speed Samtec connector and ...
1
vote
1answer
73 views

USB Diff Pair used by 2 devices on PCB

My PMIC uses the DP/DN pair of USB type C to get the maximum current that it can draw to power up the circuit or charge the battery. The problem is that i don't have a hub and the signal from ...
1
vote
1answer
104 views

Why does the USB-C plug shell carry a voltage?

I purchased a Xiaomi laptop PRO computer, which uses a USB-C plug for its power input. I recently measured the plug's shell with a AC voltmeter, and found to my surprise a voltage between 90 to 100 ...
1
vote
1answer
589 views

12v DC to USB type C

Considering that USB C can output up to 20 volts and 5 amps, what would be required to wire up a 12 volt battery to a usb type c female port? I want to charge my phone using my motorcycle's 12 volt ...
0
votes
1answer
280 views

USB-C UFP and DFP Not Working Properly with ONLY Samsung Mobile Phones

I have a UFP device (basically just a light) that I am trying to sink for power only. The "light" has a micro-B plug, which then plugs into a micro-B port on a PCB, that then includes a USB-C plug ...
0
votes
1answer
86 views

Use USB-C cable as multiples regular copper wires

Could it be possible to use a USB-C Cable to USB-C Cable with both end controlled by me, just for use as simple copper wires, without negotiation, etc... Because i would not be using the USB protocol. ...
3
votes
5answers
966 views

How to get 20 V from a USB-C charger?

I want to power my DIY stuff with a MacBook Pro USB C charger. The label on a charger says that it can provide three different power profiles: 20.2V - 4.3A 9V - 3A 5.2V - 2.4A There is a ton of ...
0
votes
1answer
116 views

Type-C Cable : Different between Active cable, Passive Cable, EMCA

Please anyone help me to clarify different btw Active cable, Passive cable, EMCA. Their definition seem difficult to understand. Additional, in USB-TypeC Specification from usb.org: ...
0
votes
1answer
154 views

Purpose of ICs in EMCA - Type-C

I can't find the purpose of IC ( which is power sourced by VConn) inside the EMCA. Source/Sink can communicate with EMCA via this IC. But what is exactly function of this IC in Power Delivery ? P/S: ...
1
vote
0answers
148 views

Magsafe to USB-C adapter

I would like to create an Magsafe 1 to USB C adapter to re-use my macbook magsafe charger on my usb-c macbook. I have these components below and already tried to connect both V+ and Ground with no ...
2
votes
1answer
3k views

Can I power 12v devices from USB-C? [closed]

First post, and I hope I'm in the right place. Long story short, I have some led strips that normally draw power from a car battery, or large AGM via battery clamps. Well, I'm tired of having to ...
3
votes
1answer
301 views

USB-C connectors only work on target side, not host side?

I wanted to turn a short USB-A-to-Micro USB/Lightning cable into one that has a USB-C plug on the host side (because I couldn't find such a thing for purchase). I chopped off the USB-A plug and ...
-1
votes
1answer
5k views

Using a usb-c laptop charger to charge a phone [closed]

I don't really know anything about electronics and I'm not sure if it's the right place to ask, but still. Is it OK to charge my phone with my laptop's charger? Here's info on the laptop charger: ...
0
votes
1answer
164 views

USB-C How to detect an Audio Accessory with Charge Through

Given the scenario in the USB Type-C Specification Figure A-2 "Example 3.5mm to USB Type-C Adapter Supporting 500mA Charge-Through".... How does the USB Type-C Receptacle know that a USB Type-C plug ...
6
votes
1answer
589 views

USB-C Power Delivery with a buck converter

Following on from my previous question: The project I'm designing requires a peak current of 5V @ 6A. The average current draw will be more like 2A. The reason I'm looking into USB-C is that I want ...
2
votes
2answers
248 views

Add USB-C Jack to USB Device

I have some inexpensive audio equipment that I am willing to experiment on. Trying to cut down on cables and I would like everything to be USB-C. I have a small midi keyboard and a small audio ...
0
votes
1answer
381 views

Bidirectional USB Type C charging

Recently I bought a ready PCB that is basically a power bank when 18650 batteries are connected This. It has a micro USB port to charge the 18650s and two USB type A one of which output is 1A and the ...
0
votes
1answer
259 views

Wiring a USB-C (host) cable question

I have wired some custom USB-C cables from scratch in the past, where the USB-A connector is plugging in to a host PC. If I wired a USB cable where the USB-C connector was plugging into a host ...
1
vote
1answer
71 views

USB2.0 EH with USB type-C in accordance with USB specifications? Reasoning?

We would like to implement a slim USB host to store/retrieve small files to/from an USB-flash-drive (with Type-C Plug). We would like to implement an embedded (targeted) host according to the On-the-...
2
votes
1answer
875 views

Using USB-C as a power source

I'd like to complete an electronics project by allowing it to be powered over USB-C. The specification is complex, I'd love some help understanding it! I'll need to draw ~ 250mA at 5V for my project (...
0
votes
1answer
256 views

Charging a QC 3.0 USB-C Thunderbolt specced laptop via generic 15V charger

I have a USB-C PD & QC3.0 device. It takes 20V @ 2.25A (45W), or 15V@3A to charge. I also have a 15V 5A portable charger with a female 5.5mm x 2.5mm output port. I plan to connect the 5.5mm x 2....
2
votes
1answer
13k views

Wiring diagram for USB-C to USB-A cable?

I make USB cables (USB-A to Mini or Micro primarily), but don't have any experience with USB-C. I would like to create a cable that has a USB-A (2.0) connector on one end, and a USB-C connector on the ...