usb

Hi all, I am building a tethered submersible. It has a camera, a servo to pan the camera, and an LED. I need to extend the USB cables a couple hundred feet for camera and servo control. Is USB over fiber with transmitters the best way to extend the distance of the cables? Thanks, Jim

Hello, I have received a infrared multi-touch frame (Nexio HID Multi-Touch ATI0320-10) where my boss asked me to check if I can make a program that count the number of times I interact with the frame (everytime an object enters the grid). I need to display the amount of times I interacted with...

I have an esp32-S2 saola and I am trying to use it as a MIDI usb device. I am trying to use this github repository: https://github.com/chegewara/EspTinyUSB. I am able to run the code on the esp32s2 saola and I am connecting to a mac with a USB cable to pins 19 and 20 but don't get any MIDI input...

Disclaimer: I'm not an engineer, just a DIY enthusiast. So I have an cheap old plastic SMD LED desk lamp but its battery and circuit board are missing. I want to turn it into a USB powered lamp for my new apartment but I'm not sure of the best way to power it. It has 31 LEDs and the label on the...

Hi, I'm trying to understand a problem I'm having related to a USB connection. I'm working with a Mini PCIe 4G module (Quectel EC25 Mini PCle 4G/LTE) and at this moment my goal is to put it in sleep mode. I'm communicating with the module via UART (RX and TX) from which I send AT commands...

I'm making a force feedback wheel with an STM32F103. So I had to learn about HID. I made a very simple descriptor, to begin with. I'm supposed to see the buttons count in binary in the controller visualizer but they're random. Comparing the received value in USBlyser, when it's 0xA9, buttons 1...

Hello, I want (/try) to make a usb "reclocker" with a microchip USB3503 (https://www.microchip.com/wwwproducts/en/USB3503). I tried to copy their reference design a bit. I have some questions. 1. If the design seems fine ? 2. I suppose there won't be a serious ground loop if I use a floating...

Hi everyone, Most of oscilloscope cards and DAQ cards have very high sample rate in comparison with the speed of thier interface port (for example usb). I know that it is not necessary to send all sampled data to pc for display and most of digital processings are performed by card itself. My...

Hello Everybody! I am trying to program/communicate with the CC2450 BLE IC, which is a transceiver/microcontroller. My computer is having trouble recognizing the device. It does not show up in Device Manager. I've tried the T.I. tools for trying to communicate with it. I've downloaded the BLE...

Hi I made a board that contains an ESP32-WROVER and an USB to serial adapter ch340c but it's not visible when I connect it to the PC (Windows 10). I tried to install the ch340 driver and I even tried 7 USB cables but the problem still remain. So maybe I have a mistake in the design ? PS: 3.3V...

Hi Friends, Here I am attaching the datasheet of an MCU of STMicroelectronics and a typical pin configuration of a USB 2.0. PA11 and PA12 of the controller are assumed for USB_DM and USB-DP respectively. Can I directly connect those pin to the USB through a series 15R resistor and a TVS Diode in...

Hi folks, plea for help. I've wired my daughter's LED fairy lights to a USB-2 supply, but now they're much brighter than the 3 AA batteries made them (and we quite preferred when the batteries were half flat), so I've been trying to find a variable resistor to put in series to reduce the...

Hello, I'm making a controller for PC. I have purchased the PCB but it is intended for a 4 pin USB connection. My panel mount female USB type B socket has 5 wires and two grounds for some reason... Is there special need to ground in two places or can I simply solder both black ground pins to...

Hi ! I've made an usb hub pcb using a USB2517 controller but it's not working. When I plug it in the host computer I get a "not recognised" on Windows and "unable to enumerate" on Linux message. I'm not able to identify the problem. The USB2517 seems to power on at first (current consumption...

Hi everyone, I was looking for answers on google and stumbled upon this forum so I figured I might aswell directly ask my questions here =) I'm trying to mod a Guitar Hero controller (RedOctane Xplorer for Xbox 360) and part of what I wanted to do was adding a usb HUB inside the controller to...

Hi, I am using a USB-UART device (more specifically the Foca v2.2, FT232RT) to configure a Thorlabs chip (MTD415TE temperature controller), but I have no idea how do it. The chip's datasheet says to use commands such as "m?" to "Reads the version of hardware and software", or "Wx" to "Sets the...

Hello, I have a voltage regulator (switching & boost regulator) who's output voltage is being set/controlled by a microcontroller. I can set the output voltage to anything between 4.5 volts and 6.5 volts. Under normal operation, the voltage is always going to be between 5.2 volts and 6.5 volts -...

Hi, im curious how to handle ,lets say 20-30, LEDs that could draw max 60mA each on USB device. As i know usb port could deliver about 0.5A and those used in full(white color) draw around 1.2A+ ... This question is about power not how to connect them. What is the trick to use them lets say all...

Hello, I'm just now getting into creating PCB's as a hobby, and created a little board that simply consists of a BLE module powered by a tiny Lithium polymer battery (40mah). Since the max operating voltage of the module is 3.6V, I also have an LDO that will drop the voltage down to 3.3V...