Integrated USB controller just died

Started by Jack B. Pollack in sci.electronics.basics11 years ago 5 replies
USB

All of my integrated USB ports have just died, I was using it earlier to sync my PDA. I have since tried other USB devices on this PC and they...

All of my integrated USB ports have just died, I was using it earlier to sync my PDA. I have since tried other USB devices on this PC and they also don't work, and the PDA does works on another computer. It is not a software/OS problem as this computer has a removable HD and I have booted into another working OS and there is still no USB. The power on the USB port is still hot and it will...


Which USB standard connector is now required by law?

Started by Sharon Ciccio in sci.electronics.basics10 years ago 18 replies
USB

Does anyone know WHICH standard USB connector is now required by law...

Does anyone know WHICH standard USB connector is now required by law in China? http://www.eetimes.com/rss/showArticle.jhtml?articleID=199800238&cid=RSSfeed_eetimes_newsRSS Is it the mini-usb or the micro-usb? http://en.wikipedia.org/wiki/Image:USB_types.jpg While the mini-usb has been around since the USB 2.0 spec, the micro-USB is new in late 2006. http://www.informationweek.com/ne...


Why is Motorola USB not Blackberry USB (chargers = 5.0v, 5.9v, 350ma, 500ma)

Started by Emily in sci.electronics.basics9 years ago 18 replies

Is it true that one MUST use ONLY the EXACT USB charger that comes with their cell phone or digital camera? Are USB chargers really not...

Is it true that one MUST use ONLY the EXACT USB charger that comes with their cell phone or digital camera? Are USB chargers really not interchangable? The T-Mobile store told me I could only use their T-Mobile charger for my new USB based cellphone. After showing me the charger for the Motorola V195 which is 5.9 volts 375ma, they then opened a desk drawer and handed me three melted...


Help Building a USB-Controlled USB Outlet?

Started by Anonymous in sci.electronics.basics9 years ago 7 replies
USB

I am a novice and would like to build a 120V AC outlet which can be switched on and off by USB. I'm not sure what all I will need and want to...

I am a novice and would like to build a 120V AC outlet which can be switched on and off by USB. I'm not sure what all I will need and want to make sure that I'm not trying to do something much harder than it sounds. My end goal is to have a single plug where I could plugin a lamp, TV, power strip, etc and have the power to that device controller by a PC via USB port. Now I've seen some dev...


usb flash controller

Started by zoir in sci.electronics.basics10 years ago
USB

Hi, I have question about usb flash controller. I'm trying to design my own usb stick. So, which usb flash controller you suggest? The...

Hi, I have question about usb flash controller. I'm trying to design my own usb stick. So, which usb flash controller you suggest? The preferable is that easily programmable one, maybe even usb driver and flash driver is implemented on firmware.


4 AA extra power pack for smartphones & other USB devices?

Started by Adam Funk in sci.electronics.basics2 years ago 4 replies
USB

Hi, I recently came across a "Rayovac Rescuer" in Target or somewhere similar. It has a USB power output which you can use to top up...

Hi, I recently came across a "Rayovac Rescuer" in Target or somewhere similar. It has a USB power output which you can use to top up a smartphone or similar device "in the field", & takes 4 AA cells --- either alkaline or rechargeable, but you can put rechargeables in it & use a USB cable to charge them up (I'm not sure if you use the same USB port for charging the batteries up as for dis...


How do I programmatically send signals to USB?

Started by Anonymous in sci.electronics.basics10 years ago 6 replies
USB

Hello How do I control voltages to pins of the USB programmatically? For example, I'd like to say send a signal to individual USB pins...

Hello How do I control voltages to pins of the USB programmatically? For example, I'd like to say send a signal to individual USB pins (if that's applicable in USB) how do I do that ? Also what's the appropriate newsgroup for this question? Thanks .


Amazon clamps down on dangerous, laptop-destroying USB-C cables

Started by Mr. Man-wai Chang in sci.electronics.basics1 year ago

Maximum output of USB Type-C 2.0 is 20V, 5A. Could it kill?? Full story:...

Maximum output of USB Type-C 2.0 is 20V, 5A. Could it kill?? Full story: https://www.theguardian.com/technology/2016/mar/30/amazon-clamps-down-dangerous-usb-c-cables Amazon has banned USB-C charging cables that do not comply with specifications, awhich are considered dangerous as they can damage devices they are used with and potentially cause safety risks. The USB-C specifica...


USB Controllers

Started by trickyrick in sci.electronics.basics10 years ago 4 replies
USB

Can some one give me a little info about usb controllers I have being looking on the net and Im not sure what I should be looking for I want to...

Can some one give me a little info about usb controllers I have being looking on the net and Im not sure what I should be looking for I want to control about 8 relays through my USB port and would also need some kind of software program that comes with it. Has anyone purchase anything like that lately Thanks Rick


Anyone make this USB adapter?

Started by Jim Thompson in sci.electronics.basics5 years ago 9 replies
USB

Anyone make this USB adapter? USB type B Male to USB type B Female, RIGHT ANGLE in the horizontal plane, label side UP. ...

Anyone make this USB adapter? USB type B Male to USB type B Female, RIGHT ANGLE in the horizontal plane, label side UP. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Pho...


Advice sought on why 6.8A USB charger melted USB cable today

Started by Danny D. in sci.electronics.basics2 years ago 3 replies

I was told to ask this question here... I would just like some advice since I melted a USB cable today and I realized I don't have the proper...

I was told to ask this question here... I would just like some advice since I melted a USB cable today and I realized I don't have the proper troubleshooting skills. I bought over a half-dozen "Hype Volt" 6.8Amp USB chargers for stuffing the Christmas stockings: https://i.imgur.com/Zavgm4B.jpg I kept one for myself, but, when I used it last night on an iPad and on an Android ph...


USB device interfering AM radio

Started by Man-wai Chang in sci.electronics.basics7 years ago 10 replies
USB

I just discovered this. And I also found that the AC to USB power adaptor does not have a metal ground pin. So would this AM interference...

I just discovered this. And I also found that the AC to USB power adaptor does not have a metal ground pin. So would this AM interference be gone after getting a better AC to USB power adaptor? -- @~@ Might, Courage, Vision, SINCERITY. / v \ Simplicity is Beauty! May the Force and Farce be with you! /( _ )\ (x86_64 Ubuntu 9.10) Linux 2.6.38 ^ ^ 21:18:01 up 2 days 52 ...


USB Motion Detector & Camera

Started by Bret Cahill in sci.electronics.basics4 years ago 5 replies
USB

It seems like the very first thing that would appear for home security is a motion detector with a USB plug to activate a USB camera. ...

It seems like the very first thing that would appear for home security is a motion detector with a USB plug to activate a USB camera. The software would save several photos or a video every time someone got near the motion detector. Is this on the market or do you have to actually rig something up? Bret Cahill


an answer for those fiddly little micro USB connectors

Started by default in sci.electronics.basics4 weeks ago 2 replies

Awhile ago I complained about the USB micro connector that my tablet uses to charge, since it's a pain in the ass to align (at my age) and easy...

Awhile ago I complained about the USB micro connector that my tablet uses to charge, since it's a pain in the ass to align (at my age) and easy to destroy the tablet's jack. Well it seems there's a solution for it: Magnetic Type-C Micro USB Fast Charging Cable. They aren't cheap, $7 each from a US supplier on EBAY, $4 from China, but may just be the answer I was looking for. I got o...


Cameras to laptop

Started by BeeJ in sci.electronics.basics6 years ago 9 replies
USB

I want to hook up several cameras to a laptop. If I use USB webcams I can write code to view and do security stuff. BTW the software is already...

I want to hook up several cameras to a laptop. If I use USB webcams I can write code to view and do security stuff. BTW the software is already written and running. But the cable length is too limiting even with USB extension cables. I have access to the USB cams and the built-in laptop cam just fine. If I use video out cams CCTV what is the best way to get the video into the laptop s...


USB: Mass Storage + RNDIS

Started by CoR in sci.electronics.basics6 years ago 1 reply
USB

Hi ! I implemented an RNDIS interface on my LPC1768, and it works, which is okey. On the host, users are just required to install an .inf...

Hi ! I implemented an RNDIS interface on my LPC1768, and it works, which is okey. On the host, users are just required to install an .inf file. However, even if the file is really tiny, it's still trouble, since at some point the file has to be transfered (CD-Rom, USB Key ...). I was wondering if by some USB miracle I could present my device to the host both as a RNDIS device (which would n...


Use USB memory stick as random memory?

Started by Bill Bowden in sci.electronics.basics9 years ago 5 replies
USB

Is it possible to use a little USB flash drive as RAM memory for a PIC microcontroller project without a lot of serial I/O software? How...

Is it possible to use a little USB flash drive as RAM memory for a PIC microcontroller project without a lot of serial I/O software? How complicated is it? What procedure is needed to read and write a single byte to some location inside the USB flash drive? I'm guessing it requires writing and reading entire files to move small bits of data. -Bill


USB powered desk fan

Started by Anonymous in sci.electronics.basics10 years ago 20 replies
USB

It is hot in my office and for some reason I don't have any available power outlets near me to power a desk fan so I want to make a fan that is...

It is hot in my office and for some reason I don't have any available power outlets near me to power a desk fan so I want to make a fan that is powered by USB. I bought a cheap handheld fan that is powered by 2 AA batteries (3V) and I want to convert it to run off a 5V USB computer port. I need to step the voltage down from 5V to 3V. What type of resistor would I need to do this? It woul...


Circuit question

Started by Man-wai Chang in sci.electronics.basics6 years ago 48 replies

I found a un-used 6.2V AC adaptor, and would like use it to power a USB hub. We all knew that USB takes 5V as input. I am going to solder...

I found a un-used 6.2V AC adaptor, and would like use it to power a USB hub. We all knew that USB takes 5V as input. I am going to solder the 2 output wires of the AC adaptor directly onto the circuit board of the USB hub after removing its DC input socket. The 3 "o" symtbols represent the orginal pins for the DC input socket. The top & the bottom "o" should be the sleeve; middle "o", t...


IR USB device (Igor scheme) problem

Started by Ges in sci.electronics.basics10 years ago 2 replies
USB

Hi! I've decided to build an IR USB device, based on Igor...

Hi! I've decided to build an IR USB device, based on Igor Cesko's schematics http://www.cesko.host.sk/IgorPlugUSB/IgorPlug-USB%20(AVR)_eng.htm My choice was one with microprocessor. A guy skilled with electronics build it for me, and tested it in front of my eyes. On his PC everything worked like a charm, just like in Igor's tutorial. But problem now is that it wont work on my PC! I can't ...