Using a spreadsheet:

 

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Traditionally. I have avoided wireless like a ton of falling bricks.  Security requirements for wireless changes so fast that it is almost cost prohibitive to use. But so it goes. You say you will never use wireless, but you gently get attracted to using it like a drug. My first experience at using wireless was going to a retail estblishment and taking advantage of their network. Then came the time I was staying at my brother’s home while the AC was out, so to get internet I had to use wireless. Now with the Nexus 7 wireless has to be part of the home network.

Let me digress here for a minute. How have we connected computers together in the past.  Originally people  use what is know as serial via modems (the old fashiion kind that hooked to the telephone line) or directly between two systems via serial ports. For more details see: http://www.instructables.com/id/Legacy-networking-with-linux/. Then there was good old Laplink to transfer data between computers. Then we finally had real computer networking in such ways as token ring, arcnet, a host of others and now ethernet.

As I said in the last article, you can hook together two computes with just a crossover cable.  if you want to connect several computers together you would need a network switch. It plays traffic cop to manage the communication between several systems. Home networks are sort of the new railroad. Instead of watching little cars go around on a track, we are watching movies from a network and the like. Some of the computer nerds might have more than one network.

In some cases we might want to have more that one network for various reasons. One for the media room and one for the computer room as an example. Of course at some time you will want to connect them together. The easy way would be to run some cable between two points. We have a training room that hosts a thin client network. Except for internet access, it is pretty much standalone. But to connect it to the main network requires cabling.

Did not want to run cabling between the two rooms. Had to have a better plan. There was alreading electrical wiring between the two rooms, Could I use that?  Actually, yes you can. There are adapters available known as EOP (Ethernet over power) that will let you do just that. When I need to update the server, that is what I use to connect the main network which has access to the internet.  So far so good.

Now comes the fun part. What if I wanted to use the network where neither cabling or the EOP would work such a a home down the street. Utoh, there comes that nudging… Yep, it is time to use wireless. You could have a whole bunch of wireless devices just all connect back to what is known as a wap (wireless access point). Most modern routers with wifi can do that. But what if you have computing devices that either do not have up to date wifi security or just do not have wifi?

You could use two wifi routers by brdging them, but then that leads to extra management of fhe wifi. I really wanted something simpler. You can what is know as a wireless access client that can connect to the first wireless access point. Virtually no extra maintence once you set it up. You will need the mac access address and the ssid of the network access point you want to connect to. Good, no need to connect to anyone elses network. You have to be careful though some wireless access points claim also they can be clients, but that is not always true. Then you can attach a switch to the access point client to use more than one computing device. Of course the speed of that connection will vary with added devices.

That is my small trip into starting using wifi devices.

Note. You do need to use wfi security in setting up all the devices. Do not just connect them together and expect them to be secure. That is another article to get into the details of wifi security.

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Update:

If you want to use an ipcamera with motion, it is easy but you have to know about the camera. I ended up going to the zoneminder wiki and found the answer for my camera. Setup is the same, but you have to add two lines to motion.conf.

netcam_url http://19.168.10.85/videostreadlocationsomekindof.cgi
netcam_userpass user:password

For us  it was:

netcam_url http://192.168.10.85/video.cgi
netcam_userpass user:password

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Let’s get wired!

Almost but not quite.  Had to replace the ethernet cable from the bridge (aka modem) to the network router/switch.  An ethernet cable looks like a telephone cable but twice or so as big, Back to the cable.  If you moved the cable the connection would fail. Not acceptable. Fortunately, had the tools and parts to repair the situation.  Many places use wifi, but there area lot of business establishments that do not allow wifi for security reasons.  Since most tablets require the internet to be fully useful so that turns the units into bricks per se.What do you do?  You can now get adapters to connect touchpads to a hard wired old fashion network.  Usually consists of a usb connection sometimes known as an On-The-Go or OTG cable and then attaching the ethernet adapter. Of course you still need that cable to connect to the network. Where do you get the cable? If you are at a business establishment, they probably have a spare. Looks better if you already have a cable with you though.  Most better electronics stores now carry them. You have to be careful. I was at Walmart today and they had one for forty dollars. Eeeks. They had some others for between twelve and twenty dollars. A decent length of cable should be under ten dollars.You have another alternative though and that is to make your own cable. If you take any amount of IT classes, you will be required to make a cable at least once.  With a lot of companies converting from wired to wireless you can almost get old eight conductor cable for free. You will still need to get some of the RJ-45 plastic ends. Telephone wire uses RJ-11 ends. Generally there are different qualities of cable such as cat5, cat5a, and cat6. For a short cable on a traditional network, the qualities are not that critical yet. If your needing to make a lot of cable, it makes sense to buy cable in bulk.Most networks are in what is known as the star configuration. There is also the bus, the token ring, and modified networks. We will skip those for now.  That means everything connects into one set of points like the spokes of a wheel.  When a cable is made the configuration of the wires is very important. You have two ways to connect the medium dependent interfaces (MDI for short).  You can have the MDI straight though cable or you can use the MDI-X (MDI-crossover). This use to be very critcal what cable you used.

If you used a cable from a computer to a switch, the MDI cable usually worked just fine. Between routers usually used the crossover cable. Eventually those units had switches to allow the use of non-crossover cables. Today most routers now support auto-mdi so that it is not that critical as your the standard configuration. In most cases you will need just to have switches and standard cables  to connect everything together. Now there is an exception. What if you want to hook two computers directly without a switch. You would then just use a crossover cable. Cool.   So how does the cable go together. Most cables have the eight conductor inner wires color coded in a certain fashion.
.

Ethernet cabling comes in two versions usually comes in two versions, Tia/eia 568a and Tia/eia 568b.  Tiaa/Eia 568b on both ends what is used for traditional MDI cable. If you want and MDI-X cable you would have one end as Tia/Eia 568a and the other end as Tia/Eia 568b.  There are other  configurations, but these are the most common. Sometimes the configuration is known as wo-o-wg-bl-wb-g-wbr-br and wg-g-wo-bl-wbl-o-wbr-br.   So you have four pairs of twisted wires.  See typical cables as shown below.

Let’s make a cable.

1. You will need an RJ-45 crimping tool. Some of then also support the RJ-11 for telephone lines. You can get them cheap, but it is better in the long run to get a better one.

2. You will also need at least two and better if you have more ends in case you make a mistake. Been there done that.

3. Use the double edge cutters to gently cut the outside casing about and inch or so from the end of the cable without damaging the inner wires. This may take a little practice. If you make a mistake just cut off the bad part with the single blade on the tool.

4  Sometimes if is better not to get the whole sheating cut through to make sure the inner wires are not cut. Then just tear off the sheathing end, Notice the four twisted pair.

5. Now separate all the wires.

6. Then line up the wires. wo-o-wg-bl-wbl-g-wbr-br,

7. Uneven lengths trim them with the single edge blade.

8. With the clip side facing down gently insert the wires making sure they stay in line. Then press in the cable as far as you can. The outside cable should fit inside.

9. Recheck the cable color selection, if not correct, pull the wires out and reposition them. Then reinsert the cable. Also takes a bit of practice. Put the cable in the crimping tool and PRESS DOWN. Remove the cable from the crimper.

10. Repeat the prior steps for the other end.

11. Now you may want to test your cable. There are two kinds of testers, One tests the cable using both ends. Never use this tester with a wire connected to the network or it most likely will be destroyed, Read the manual how to speccifically use the one you have,

There are also testers designed to connect to a live network. But even then some can give false positives that the connection is good. Again read the manual on how to use it. Units made by Fluke have been the standard.

If all is well, use your cable. That is the real test. If for some reason you made an MDI cable and you need and MDI-X cable, you can get an adapter so that you do not have to redo the cable. Usually carry one with me on jobs.

That’s it….

Note: you will eventually need a new end. They do not last forever. But you are ready to take care of that now!

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Always trying to organize things. thought about a small semi-hutch to put stuff in.

Screenshot from 2013-02-22 05:09:36

Now the basic frame if made, need to do the drawers.

P000-256-303-596-f1016

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Poached egg sandwich.

P000-302-297-586-49037

Good day!

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