usb

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...