1. R

    PIC24FJ128GB202 connecting USB ON-THE-GO to newer laptop with USB 3.0 (ss ports)

    I've recently been design a PIC development board with USB and other peripherals, I've got the board working, got code running on the board and managed to test all of the peripherals that worked great, until it came to USB. The issue isn't the USB circuity its self, I've recently brought a new...
  2. C

    Where to buy cable suitable for USB connections.

    USB was intended to be a universal data connection protocol and hardware standard, and has been passably successful in so becoming. However, the more I see of USB C the less I like it, especially solely as a power connection for SBCs such as Rpi. It's like using a steam-shovel to hammer a nail...
  3. J

    USB extenstion for submersible

    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
  4. M

    Read data from USB devices

    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...
  5. Arjuna1

    How to get an esp32-S2 recognized as USB device on a mac

    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...
  6. R

    How to power an old LED lamp via USB

    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...
  7. M

    Understand USB suspended or unconnected mode

    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...
  8. T

    My HID doesn't output the correct values - STM32

    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...
  9. Stavros Avramidis (asder)

    USB Reclocker with a USB3503

    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...
  10. Emad2017

    how Oscilloscope Cards transfer sampled data for display on PC

    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...
  11. I

    T.I. BLE USB MCU Programming Trouble (CC2540)

    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...
  12. A

    Problem with CH340C

    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...
  13. shibin_varghese

    Connecting USB with MCU

    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...
  14. TimBav

    How to dim 4.5v fairy light LEDs on a USB supply?

    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...
  15. P

    Panel mount female USB B to PCB (two grounds on Panel mount)

    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...
  16. Villanut

    USB2517 unable to enumerate

    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...
  17. Benzine

    How to add an USB hub to an existing circuit ?

    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...
  18. Macoleco

    How to configure a chip using UART-USB?

    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...
  19. M

    USB Charger Circuit - Initial Consumption Before Power Negotiation - Timing?

    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 -...
  20. Mrunje96

    How to handle multiple LEDs on usb device

    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...
Top