I have a very old windows 98 pc that has a network card on PCI that has 2 entrances on it (both RJ-11 one has "in" next to it and the secon
"out").
I'd like to connect this pc to my new laptop which has a normal RJ-45 Ethernet entrance, because I have some files I wanted to transfer out of that old pc. Is there any way to do this?
If cables would be needed to be maked, that's no problem. Of course setting the IPs and all is clear to me, W just want to know if W can connect these computers using an RJ-11 to RJ-45 connection. If that wouldn't be possible, what could work in this situation? (There are no USB ports on this pc and no CD burner)
Also, I wanted to ask, if I connected 2 PCs with RJ-11 cables would the network connection be established in the same way as when I would connect 2 PCs with RJ-45 ethernet cables?
Thanks!
One of options is to connect both to same network and transfer files with network sharing option or with hard disk reader get file's from disk:
https://www.ebay.com/itm/Hard-Disk-Drive-SATA-7-15-Pin-22-to-USB-2-0-Adapter-Cable-For-2-5-HDD-Laptop-CY/172688340405?epid=14007489979&hash=item283506f5b5:g:~pAAAOSwK6RZIpDv
or option with adapter to convert output RJ11 to RJ45 and than with normal RJ45 cable connect PC and Laptop. So point is that RJ11 has just 4 wires and is not for same purpose as RJ45 and i think even connection with RJ11 between two PC's will not work, but not sure because i don't never tested that.
Related
I have a digital scale for trucks that is currently connected to a Windows XP computer that is unusable because of all the bloatware and viruses installed in it and the fact that the pc is 15 years old and it can't be formatted because the software and drivers for weighing the vehicles would be lost.
I'd like to develop a web application and configure a pc with Ubuntu Server running LAMP, and upgrade the whole thing so I can get rid of the old XP computer and work everything from a web browser.
I can connect and process the serial data using either NodeJs or Python, but I did that by connecting to the scale directly with my laptop.
What I need is to be able to connect to the serial port from another office where the PC with Ubuntu Server will be.
Is it possible to attach the digital scale to an ethernet adapter that doesn't require a host computer ???
My main problem is that I need the server to not be in the same room where the scale is and ethernet is my only option since there is an ethernet cable that runs undeground to where the scale is and is connected to a small switch which the people that weigh the trucks use.
I guess one option would be to use a Raspberry Pi maybe (since it's small enough) to connect the to the LAN and to the scale, and transmit the data whenever the server requests it, but I don't know if maybe just by using a converter only, the server could connect to the scale and get the data without the use of a host...
Any help would be greatly appreciated!
The system includes three devices: PC, robot's computer, and wireless device.
In order to improve the signal quality of the wireless in the whole robot's environment. I'd like to put a big wireless device in the middle corridor where it is not Ethernet (no internet) and only feed by power, then use its signal to connects it with the robot's computer. The robot's computer has a small wireless device that will connect with a big wireless device. Both wireless devices have no internet, only electric power, and signal.
Can I transmit data from the robot to my PC and vice versa over Wi-Fi's signal ?
Can I access the robot's computer using Wi-Fi's signal to launch the robot ?
If yes, please your suggestions, and what are its disadvantages?
Any suggestions would be greatly appreciated.
Note: the system is working fine now using the internet in the big wireless device and connect it with the robot's computer and PC, only some problem when the robot is very far from a big wireless device because of dropping the signal quality to 5% here
The issue is ridiculous, I didn't aware of the task of some lines perfectly.
Those lines in bachrc file solved my issue.
export ROS_HOSTNAME=ip for master
export ROS_IP=ip for master
export ROS_MASTER_URI=http://ip for slave:11311
It does not matter if there is Internet or not.
All we need is a router on PC or cable Ethernet to connect the big wireless device (router) with PC and find IP Address for two computers.
On the other hand, the same case within internet.
I have a raspberry pi 4 and a pc, I have to transfer files at very high speed than Ethernet and WIFI
if any possible methods are there Please tell me?
I'm not too sure if you're saying you want to transfer files over something other than wifi or Ethernet? If so, USB A to USB A should work for you. PCIe are downstream slots which you would be unable to connect to another system using that method. If you are able to plug up to each of the systems using ethernet, that's probably your easiest choice. As long as you bridge the connections and allow file printing and sharing, you should be able to see the system in your file explorer.
I have 16 Arduinos that are in very tight spaces and hard to get to when I need to reprogram them with my FTDI cable. I would like to have or create some sort of centralized place where I can connect my FTDI cable, make some sort of selection (switch of some sort), which will then connect the pins my cable is on to the selected arduino.
Does anyone have any thoughts on how this can be accomplished? I've toyed with transistors, but that takes a lot of them and didn't quite work.
Are there any premade solutions that are out there that I have yet to find?
Thanks very much!
Here is a thought! TCP to Serial.
Sound complicated.
Not really.
Note from AVRDUDE's manual the following
For programmers that attach to a serial port using some kind of higher
level protocol (as opposed to bit-bang style programmers), port can be
specified as net:host:port. In this case, instead of trying to open a
local device, a TCP network connection to (TCP) port on host is
established. The remote endpoint is assumed to be a terminal or
console server that connects the network stream to a local serial port
where the actual programmer has been attached to. The port is assumed
to be properly configured, for example using a transparent 8-bit data
connection without parity at 115200 Baud for a STK500.
With this, One could place your Arduino's behind your choice of TCP to Serial Server. Which is available in several forms. Cisco has a gang TS (but that is expensive, unless used). lantronix (and others have single end point devices. But then for Linux, there is "Net2Ser" which can serve up all your ttyS (aka Serial/COM ports).
With the later you could use a raspberry or TP-Link TL-WR703N (
In the latest IDE 1.5.6r2 add one entry for each TCP-to-Serial Port to ./Arduino/hardware/arduino/avr/programmers.txt file. While replacing the IP and Port with corresponding values.
TCP2001.name=TCP 2001
TCP2001.communication=serial
TCP2001.protocol=stk500v1
TCP2001.program.protocol=stk500v1
TCP2001.program.tool=avrdude
TCP2001.program.extra_params=-Pnet:192.168.1.100:2001
TCP2002.name=TCP 2002
TCP2002.communication=serial
TCP2002.protocol=stk500v1
TCP2002.program.protocol=stk500v1
TCP2002.program.tool=avrdude
TCP2002.program.extra_params=-Pnet:192.168.1.100:2002
...
Additionally change "protocol" to "upload.protocol" the following line in ./Arduino/hardware/arduino/avr/platform.txt
tools.avrdude.program.pattern="{cmd.path}" "-C{config.path}" {program.verbose} -p{build.mcu} -c{protocol} {program.extra_params} "-Uflash:w:{build.path}/{build.project_name}.hex:i"
to
tools.avrdude.program.pattern="{cmd.path}" "-C{config.path}" {program.verbose} -p{build.mcu} -c{upload.protocol} {program.extra_params} "-Uflash:w:{build.path}/{build.project_name}.hex:i"
With this you can use "Upload Using Programmer" with the selected programmer to send over TCP, rather then use the Upload.
That all said, it will only work on Linux.
avrdude: ser_open(): network connects are currently notimplemented for Win32 environments
I have 2 linux computers. For security, I want to setup a link between them, then program a library for sending/receiving data over this connection. I know that we can use USB networking cable for connection. But I am not sure is it possible to send and receive data on this link, does it depend on cable manufacturer? And Can I program library without using cable driver?
You can't use a USB cable to connect two computers with standard USB interfaces. Standard USB interfaces on computers are host interfaces and you can only connect a host to a device, not another host.
The "cable" described in the article it's not just a cable, the correct name would be USB host-host bridge controller and it powered by a chip designed and manufactured by Prolific - PL 2501. It's described also in the article.
As David Schwarz said with dumb cable (only the wires) you cannot setup a link between two PCs, because USB it's master/slave bus, where a device it's the slave and other the host. The PC it's designed to always be the host (the master).
The response it is that you cannot setup a link or do networking between two PCs using a dumb USB cable. You can do this only using a bridge like the one described in the article.