Questions tagged [usb-device]
Quesions about the design of USB devices that connect to a USB host, such as a PC.
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How to convert MEMS digital microphone to USB? [closed]
I have a camera + microphone combo PCB board removed from an all-in-one computer and I'm trying to reuse it. The camera is a standard USB device. The wires are even properly color coded. So I just ...
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USB-C module configuration pins in parallel connection
I have received a lot of help from several members of this site. After trying to wire two charging ports on the same device and investigating the diode OR-ing configurations and the power mux ...
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Why USB-C plug doesn’t charge? [closed]
I have multiple USB-C 5V chargers of the same type that do not charge connected android devices. Devices detect charging if these are turned off, but when turned on, no charging icon of any visual ...
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How to control a USB powered fan from ESP8266 or Raspberry PI
I bought a USB powered desktop mini fan which has a single button to control the fan speed (1, 2, 3, Off). The fan has a rated input of 5V/1Amp and rated power of 1 - 5W.
I am tyring to find out a way ...
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Converting a USB HID K/M Composite Device to a USB HID Compound Device (or Two Seperate K/M Devices)
I want to connect a USB composite device (Raritan KX4-101) with keyboard and mouse descriptors to a USB matrix switch with a very picky HID keyboard and mouse emulation (Extron SMX USB).
From what I ...
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USB 3.0 SS lines issue
Can you route USB 3.0 SS lines to two PCB's but the USB controller is located on the second PCB?
The PC host is connected to the first PCB over a usb c-c connection (center usb port in image). Then ...
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Unable to make ULPI works with STM32F446
I am using a USB3300 chip as an external HS 480Mbit/s USB PHY with STM32F446 MCU. Using CubeMX to generate code and add USB CDC Middleware. As I connect the USB Cable from the PC to the USB3300 chip ...
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STM32 VBUS sensing with quick charge
I'm developing a self-powered device based on STM32. The fast charging feature controlled by a chip using D+/D- USB pins. Once USB is connected, the chip performs "handshake" to know the ...
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Can the MCP2221 send serial data through a USB serial link?
I am using a MCP2221A to program an ATMEGA1284p through the USART/UART lines(converting USB signals from the computer into a programming signal the MCU can read). However, given that I can send serial ...
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Does USB-C Power Delivery require both CC pins or D+/D- pins?
I'm working on a project to update a device to use a Li-Ion battery rather than non-rechargables. I would like it to be charged via USB-C.
I have previously used IP2721 to handle the power delivery ...
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How do I troubleshoot the ESP32 USB JTAG/UART interface on a new PCB design?
Question
How do I troubleshoot the ESP32 USB JTAG/UART interface on a new PCB design?
Background
My son is working on a project to track satellites and this is the first time that we have worked with ...
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RP2040 automatic BOOTSEL switching circuit
I enjoy drawing electronic circuits and making them by hand as a hobby. (Not a major, not a job)
While writing a custom board based on the RP2040 chip, I am trying ...
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USB 2.0 FS device over USB C with both power directions
I'm designing a battery-powered device with the following requirements:
rq1: (a) Charge the device's battery over a USB C receptacle, or (b) provide power over the same receptacle. Both directions ...
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How to check if I destroyed the bluetooth receiver
I have very little experience with electronics but I tried converting my Logitech unifying receiver to USB-C.
I followed the steps I found online and got a functioning result. I based my wiring on the ...
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What’s this PCB that interfaces with the USB CarPlay connector of the Ioniq 5 / EV6? [closed]
As with several owners of the Hyundai Ioniq 5 and the Kia EV6, I’ve been having intermittent issues with the USB CarPlay functionality. It worked fine when the car was new, but after a few months the ...
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