Questions tagged [usb]
USB is Universal Serial Bus. If your question relates to a specific chip, please mention it in your question.
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Confusion with the meaning of virtual com port
As far as I read, plugging a USB mouse into a PC is not creating a virtual port; but plugging a serial to USB converter does.
This is very confusing for me since from PC operating system's point of ...
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USB cables being affected by manufacturing equipment [closed]
I am an IT guy, who enjoys learning about some of the electrical engineering side of things, but I don't have a good grasp of the jargon.
We have a client with about 40 different smaller production ...
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USB data does not work on my PCB [closed]
I've build a PCB based on RP2040 microcontroller. A modified version of PicoDVI board - with added memory chip.
The board works fine, with just one problem - it is not being detected when plugged to a ...
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USB A mechanical orientation?
This concerns a USB A socket on a PCB.
Is there a standard or preferred orientation of the polarization tab, either up or down?
The picture shows one with tab towards the top
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Replace this USB power board [closed]
I have broken this board, its for USB powered lamp. I presume it is a power conditioner for usb power... As its before the light color/control board. Im not sure if it was USB or USB C - I presume its ...
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5V on DP and DM pins on FT232RL?
Can I apply 5 volts to the DP and DM pins of the FT232RL, given that the technical sheet says that the maximum voltage of these pins is up to 3.8 volts?
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USB Data communication issue on a panelized pcba hardware test platform
I need some help..
I developed a test platform for the hardware tests of an electronic board panelized in sets of 10. The boards are placed on the test platform in their panelized form. As shown in ...
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Do FT232 come pre-programmed out of the package?
I'm working on a board which requires USB serial communication. For this I want to use an FT232RNL, however I'd like to know if I need to program it before I install it on the board. Also, do I need ...
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12V through USB Type C without PD
Can I get 12V to my system through USB type C without PD or configuration CC lines or Using CC controller?
If yes how can I do that .
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How is CRC5 calculated in detail for a USB token?
How is CRC5 calculated in detail for a USB token?
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FT230X using USB-C receptacle not working for data transfer
I have tried to add a USB-C connection to my PCBA solely for data transfer.
I have used a FT230XQ-R microchip (Datasheet) and followed their uploaded example for a USB-C receptacle. I have now ...
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Purpose of NPN transistors in this ESP32 circuit [duplicate]
I am wondering what is the purpose of the two NPN transistors Q4 in the circuit below.
(full circuit schematic)
In this circuit, which is from an eval board for the ESP32-S3 microcontroller, ...
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DC isolation - 3 separate circuits with same power source and shared I2C
I am trying to build one small project and based on the needs I need to isolate few components but also keep them connected using I2C. I was doing a research and found few DC DC isolator converters ...
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A simple visual indicator (LED light?) when a USB fan is on
I have a USB fan, some distance away from me, which I use occasionally. It's plugged into a charger and it has a manual switch. I sometimes forget to turn it off, because it's very quiet so I can't ...
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Home made USB 2.0 device switcher (for mouse/keyboard only)
I did buy some off the shelf ones, but they seem to fail after a few months and or screwing up the USB ports.
I opened the switch box up and noticed that the two power lines were always connected to ...
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