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...


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...


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...


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 Motion Detector & Camera

Started by Bret Cahill in sci.electronics.basics5 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.basics3 months 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...


Does an USB stick gain weight when you put files on it?

Started by Bert Harleman in sci.electronics.basics8 years ago 11 replies

Does an USB stick gain weight when you put files on it? or to put it a different way: Are electrons from outside used to store data on an USB...

Does an USB stick gain weight when you put files on it? or to put it a different way: Are electrons from outside used to store data on an USB stick? Since I'm quite new to electronics I cannot give a logical explanation. I searched a lot on the web and I found the folowing data: ? Flash memory uses the Fowler?Nordheim tunneling principle to charge a thin oxide layer ? Excited elec...


AD/DA and Op amp?

Started by Kari Laine in sci.electronics.basics7 years ago 3 replies

Hi, I have been playing with USB using Ztex's USB module. I plan to make an oscilloscope and function generator. Therefore I would need an...

Hi, I have been playing with USB using Ztex's USB module. I plan to make an oscilloscope and function generator. Therefore I would need an AD and DA chip with 12 bit resolution. And quite fast ones also. Plus I can't really handle the surface mounted ones yet, so DIP would be good or a break out board with DIP pins. Could someone please point me in the right direction. Then other s...


USB to PCMCIA Bridge Chip (Component)

Started by Jay,Jeong in sci.electronics.basics11 years ago 2 replies
USB

Hello~ I am expected to develop the mobile equipment as a PCMCIA Type and will use a core processor like a SoC(System on Chip, ASIC) Even...

Hello~ I am expected to develop the mobile equipment as a PCMCIA Type and will use a core processor like a SoC(System on Chip, ASIC) Even though this mobile equipment must have a PCMCIA Interface to connect with host(Notebook), SoC doesn't supply PCMCIA Interface Signals, but only has USB Interface Signals. Therefore I should search a bridge component or controller to transfer USB sig...


Rudimentary PC USB oscilloscope?

Started by John Doe in sci.electronics.basics2 years ago 20 replies

My main question is about PC USB-based oscilloscopes. The rest of this is specific to my problem(s) and may be overlooked. I'm using cordless...

My main question is about PC USB-based oscilloscopes. The rest of this is specific to my problem(s) and may be overlooked. I'm using cordless drills to power electric bicycles. I have one built. It works but is underpowered. I am building a better one using a DeWalt DCD995. Some nice electronics included in that drill, a stout (very tight turning) brushless motor with a controller. ...


USB drive in a ziploc bag?

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

What are the chances of a USB drive being damaged by static electricity if someone put it in a ziploc drive?

What are the chances of a USB drive being damaged by static electricity if someone put it in a ziploc drive?


USB-to-Serial ??

Started by Jim Thompson in sci.electronics.basics5 years ago 12 replies

Further cleaning up in the office found an odd cable... USB on one end, what looks to be serial on the other?? Was there such a thing. My...

Further cleaning up in the office found an odd cable... USB on one end, what looks to be serial on the other?? Was there such a thing. My cable collection was sort of hilarious, I don't know why I kept some things for so long... I must have tossed 20# of parallel port printer cables ;-) ...Jim Thompson -- | James E.Thompson, CTO ...


Analog To USB

Started by OldGuy in sci.electronics.basics4 years ago 11 replies
USB

Looking for a simple and inexpensive analog to USB hw module with sw drivers that I can code into. One or two channels. any input range. 12...

Looking for a simple and inexpensive analog to USB hw module with sw drivers that I can code into. One or two channels. any input range. 12 bits or more. a kit would be OK. do not want to do a PWB myself. PC Win XP or 7. --- news://freenews.netfront.net/ - complaints: news@netfront.net ---


So, where am I going wrong?

Started by eatmorepies in sci.electronics.basics6 years ago 11 replies
USB

I want to emulate a left mouse click by plugging in a cable from a mouse and applying a 5V signal from a D type latch to the wires. This is to...

I want to emulate a left mouse click by plugging in a cable from a mouse and applying a 5V signal from a D type latch to the wires. This is to switch a software stop clock on and off. I looked up the USB connections here http://pinouts.ru/Slots/USB_pinout.shtml I opened a working mouse and connected it to a USB port. There was 5V across the red and black connectors - as expected. Wh...


PC-USB Encoder needed, with ~1,500 switches!

Started by christopher issler in sci.electronics.basics6 years ago 3 replies
USB

Hey all, I=92ve seen several USB 8-128 possible switch encoders. I need an encoder that can handle ~1,500 possible switches. I=92d then...

Hey all, I=92ve seen several USB 8-128 possible switch encoders. I need an encoder that can handle ~1,500 possible switches. I=92d then need to write a listener, to decode and call the custom code. I need to first build the encoder=85becauase I cant find anything online. Any suggestions where I should start?


Powered USB Hub

Started by Jim Thompson in sci.electronics.basics6 years ago 19 replies
USB

I need a powered USB Hub, 7 (or more) ports. Lots of conflicting reviews out there. What do you fellow lurkers recommend? Thanks! ...

I need a powered USB Hub, 7 (or more) ports. Lots of conflicting reviews out there. What do you fellow lurkers recommend? Thanks! ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | ma...


Surge Protector - how they work?

Started by Kari Laine in sci.electronics.basics7 years ago 9 replies

Hi, it is the thunder season here in Finland so I got interested how these surge protectors are built - which say they will save you hardware...

Hi, it is the thunder season here in Finland so I got interested how these surge protectors are built - which say they will save you hardware from spikes - yeah.... Are there avalanche diodes and coils? I have a dim feeling I have asked this before... Best Regards Kari -- PIC - ARM - Microcontrollers - I2C - SPI Keypads - USB-RS232 - USB-I2C - Accessories http://www.byvac...