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36 Threads found on edaboard.com: Usb And Self
usb HOST or SLAVE or OTG?
Hello. I'm sorry for the weird title for this post but it was the best I could do. Anyway I have begun a new project for a LCR meter and the first part of it all is power supply, I need a symmetrical power supply(Both positive and negative voltages) derived from one of two possible options: 1, A single battery of +3,7V. 2, Two batteries con
Hi I designed the usb device as slef powered without VBUS from usb Connector. 1) If My board is connected to usb Hub or PC usb Port, usb HUB or PC usb Port is damaged. It isn't operated again. : Board is using cicular connector(=12pin) in stead of the standard (...)
The usb standard specifies that self-powered devices shall monitor Vusb to detect attachement and detachment. An usb device designed in concordance with the standard thus won't operate without Vusb. Your self-elaborated PIC device possibly will.
Problem is with usb2TTL adaptor driver. Check in Device Manager to confirm problem with the driver. Download CP2102 driver from its website for the OS you have on Celeron System. Is Celeron is 32 bit or 64 bit? i3 is 64 bit and you might be using 64 bit OS. Download proper driver for the version of OS you have.
As a preliminary remark, most edaboards members will probably look at usb power questions from a PC user rather than an official usb standard viewpoint. Quite obviously tpetar is bringing in this practical view. Nobody is required to "read the spec" as long as he isn't developing compliant equipment. Personally I'm using a portable (...)
I am trying to usb interface my PIC18f2550 with PC. I am using WFF HID usb demo from .The problem is that the LEAPER 48 universal burner is not picking the config bits. I compiled the code with C18 compiler in MPLAB lite ide. The problem is that PC recognizes HID device but its very random. Sometimes it picks and sometimes not.
Hi dear, i m also using usb programmer but for AVR mcu's... i think programing is same for every controller.. i m using BASCOM-AVR for compiling the program and BASCOM it self generate the .hex file... i have some windows application that come with my avr-programmer i use to program my controller - - - Updated - - - h
Hi, One of my studend has made a board to drive stepper motors. The problem is that, the PC could not communicate with the PIC18F4550 in self power mode. We use the PICDEM FS usb framework (HID custom demo modified software The student has made a small board with an another PIC18F4550 in bus powered mode and it works. We have (...)
I think you've got only one I2C/SPI port on that device. But, you can hang multiple devices on the bus, they just need to have different addresses. That's the short answer. The long answer is: you'll need to educate your self about I2C or SPI-but it's not that hard. (At least, not as hard as usb or Ethernet). Actually, with SPI you would use s
Possible countermeasures are full optical isolation on the local side of FT232 (provided, it's not a bus-powered application) and large toroid cores (with multiple turns) as common mode chokes for the usb cable. In some cases usb hubs are less sensitive to interferences than the original host adapter.
Check the permissions of the /dev/ttyusb0. Usually the port has owner root and group owner "dialout" for example. You must be member of the group. I'm not pretty sure if in Ubuntu the group owner is "dialout" (in Fedora) but you can check this by your self.
Can you please try to explain which usb port type at which system you are talking about? Generally, you have host and device ports which have different roles regarding supply voltage. Also usb devices can be designed as bus-powered or self-powered.
Hi Guys, I wanna to make a wireless network adapter myself , Can someone give me some detail advise ! I have a notebook , and I am not satisified with the network interface equipped . So, I want to do my self ,also with a DIY Antenna . using usb ;-)
hi all friends You have seen lot of usb power injector one from silicon chip magazine which was republish in EPE magazine some other on web when you Google. This hardware was develop for my own need and it is better and has lot of edge on those design, switch mode capable to deliver current truly 1 amps (tested my self) (...)
I want to ask all of you about the hardware that we build by our self and than connected to PC by using LabVIEW. I want to build many project with LabVIEW but now I just start test the hardware, I dont know how to connect via LabVIEW. I had been install already the NI VISA, for connect my hardware where it use the usb port. So please kindly (...)
Hi all I'm sharing with you atmel's famous usb circuit with atmega8 circuit have 15 I/O pins. I used 15 led and 3 relay for see outs File pass : tekniker_erhan All files here Test video i
We are a professional technology company in developing and manufacturing usb interface hardware/software products in shenZhen China. We invested relevant parts making equipment to allow our self-making ratio to over 80%. What we can do now includes IC development, structure, design,tooling,plastic/rubber molding, silk printing, membrane (...)
We are a professional technology company in developing and manufacturing usb interface hardware/software products in shenZhen China. We invested relevant parts making equipment to allow our self-making ratio to over 80%. What we can do now includes IC development, structure, design,tooling,plastic/rubber molding, silk printing, membrane (...)
We are a professional technology company in developing and manufacturing usb inetrface hardware/software products in shenZhen China. We invested relevant parts making equipment to allow our self-making ratio to over 70%. What we can do now includes IC development, structure, design,tooling,plastic/rubber molding, silk printing, membrane (...)


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