ticalc.org
Basics Archives Community Services Programming
Hardware Help About Search Your Account
   Home :: Archives :: News :: Link Cable Made From Phone Cord

Link Cable Made From Phone Cord
Posted by Nick on 7 September 1999, 03:04 GMT

Chris Bunting of Fission2Labs approached us with a clever idea recently: a link cable made from a normal phone cord. According to Chris, he's had perfect transmissions from cables as long as a hundred feet. Many projects from them are under development but one of their other finished inventions (it's in the alpha stage) are their LED lights for a display screen. The whole site is definitely worth a read.

 


The comments below are written by ticalc.org visitors. Their views are not necessarily those of ticalc.org, and ticalc.org takes no responsibility for their content.


Re: Link Cable Made From Phone Cord
saywhat97  Account Info
(Web Page)

I wonder how much the radio link would cost to build...
I know that a radio link has been brought up on the mailing lists many times and it would be interesting if someone got it to work.

I hope it's not too complicated, I don't know much about serial communication or radios.

IMHO, the radio link would be a lot more usefull than the telephone cable link, I just hope they're not so busy making phone cables they don't have time to make any radio links.

ok, that's enough for now.

     7 September 1999, 03:24 GMT

suspect of the [adjective not allowed]'s
KAKE  Account Info
(Web Page)

if you'll note, the ir link has already been done, the LED deal is a simple rip, and the phone cable is quite useless. sorry, but what the HELL is this news item doing here?! perhpas if they HAD made the radio link or the expander and were selling it it'd make sense, but what they do have is simply rips and stupid stuff. sorry, but i've gotten pesimistic and angry in my old age.

-KAKE
IP yeah, go ahead and delete this just because i said 'hell'

     7 September 1999, 03:34 GMT

Re: suspect of the [adjective not allowed]'s
fission2  Account Info
(Web Page)

Our IR link has new features, that others do not have. The LED light is meant to be an easy project for beginners, and it is just that. The phone cable is quite useful, in that if you can't reach your calc-calc cable to the persons calculator that sits behind you and you want to play a multiplayer game, you can use whatever cable length you want, with TIphoneLinc.

     7 September 1999, 03:43 GMT

Re: suspect of the [adjective not allowed]'s
Nick Disabato  Account Info
(Web Page)

Hell isn't a swear if you're agnostic :)

--BlueCalx

     7 September 1999, 03:50 GMT


Re: suspect of the [adjective not allowed]'s
zeromegax

This "invention" might only have use if the schematics were free. I sure as H*EL wouldn't pay money for it, especially $20.

     8 September 1999, 03:32 GMT


Re: Re: Link Cable Made From Phone Cord
David G  Account Info

Hey I was one of those stupid people who actually tried to build the old RF transmitter. One wasted afternoon later and $30 worth of coils etc in front of me I discovered it did not work:(.
I am just curious what channel is this new one going to operate on? The old one operated between 90and 100 MHz if I remember correctly. If this thing would really go half a mile I know a lot of people in my school who would get really pissed when their walk mans stopped working (well that could be bonus I guess:-).

Oh well I just thought I would add my two cents worth. Feel free to correct me I am not an electronics wizard and probably made some mistake here.

-Brilldon (David G)

     7 September 1999, 13:15 GMT


Re: Re: Re: Link Cable Made From Phone Cord
Olathe  Account Info
(Web Page)

Ummm...the person never said they had made a working one, they just said it would be nice.

     17 September 1999, 00:36 GMT

Re: Link Cable Made From Phone Cord
Nick Disabato  Account Info
(Web Page)

Since ticalc.org is more important than my chemistry homework, I'll ask a question here instead of doing necessary work:
Just a crazy notion here, but could I call my friend up and send programs to his/her calculator? Someone should try that :)

--BlueCalx

     7 September 1999, 03:30 GMT

Re: Re: Link Cable Made From Phone Cord
Phil Genera  Account Info
(Web Page)

Somehow Nick, I think the +10 or so volts your phone line carries during a call would screw your calculator up a wee bit.

     7 September 1999, 04:21 GMT


Re: Re: Re: Link Cable Made From Phone Cord
John Doe  Account Info

The puts out 12 volts normally. It jumps up to 24 when it rings.
That is my 2 cents worth.

     7 September 1999, 04:30 GMT


Re: Re: Re: Re: Link Cable Made From Phone Cord
gabriel milewski  Account Info
(Web Page)

...and just think about us in Sweden and a large part of Europe; You'll find about 60 Volts on the phoneline when it's ringing!

     7 September 1999, 18:40 GMT


Re: Re: Re: Re: Re: Link Cable Made From Phone Cord
Gavin K  Account Info

Well, the phone line has 4 cords in it: 2 for power, which is only used for some phones, and 2 for sending & receiving. I am not an expert, but I think it can be done.

     24 January 2000, 16:40 GMT


Re: Re: Re: Re: Re: Re: Link Cable Made From Phone Cord
NegativeKelvin

Ah, American phone systems use 90V AC when ringing, 48V DC when on hook, and around 5V DC when off hook. I'm currently trying to work on an interface with a phone line directly from the calc, and this is my greatest problem. I _know_ that 90V AC would _not_ be good with a TI-89. I intend to decode DTMF (touch tone sounds, or the sound you hear when you press a number button), as well as transfer DTMF from the phone line.. Apparently, I'm going to have to do it with a speaker (lossy), without directly accessing the phone line. Ah well.

     14 July 2000, 01:50 GMT


Re: Re: Link Cable Made From Phone Cord
Olathe  Account Info
(Web Page)

No, not without a modem. Phone lines only carry analog signals, plus you'd need to be able to make dial tones (or pulses, if your telephone system supports them) and handle the voltage that comes across when the phone is off hook.

     17 September 1999, 00:38 GMT

Re: Link Cable Made From Phone Cord
John Doe  Account Info
(Web Page)

Gee Whiz. Now when Im in math class I can play tetris with people in phys-ed. horray. Now if somebody would think of a splitter type thing so when you ssend a file it goes to 6 different calcs I might be interested.

     7 September 1999, 04:57 GMT


Re: Re: Link Cable Made From Phone Cord
Elias Cotton  Account Info

i like the splitter idea but.. i dont know how you get it to handle the data.. how bout a personal hub ffor each calc that handles the info on a single line in and out then use something like prosit if i understand that right to sort throgh the input. say the hub sends the inputs in separate bursts of info like input 1 then input2 then input 1 again.

     7 September 1999, 05:09 GMT

Ti Calc hub
new_root  Account Info

I like the idea of a Hub for ti calcs. This would be quite fun and intersting. I know i would make a lot of nerds in my school jelous if suddenly in class a pull out an 8 port ti calc hub, and hook everyone up for an all out gaming match in class. Like 8 person racing game, a unique tetris game, or something along thoose lines (Massively Multi-Player). Or you could have the hub connect to the modem, and then have 8 people go online instead of just one. The hub could also come in differnt colors to match the new ti-imac cases. If anyone made that i would buy it.

     7 September 1999, 06:43 GMT

Re: Ti Calc hub
akromix

no offense or anything, but I think someone has been smoking too much crack. Heh, well I guess that hub would be cool, but we would have to engineer a new protocol because a hub isn't smart, it doesn't know where packets are going. All it does is just send the packet to all running hosts and if the host recognizes it's IP in the 'sent to' packet, then it sends one back, an ACK...All of us who have hacked know it all......well I better get back to my memory mapping C program in linux, buh bye!

-my 1w0 fvck1n6 53n53! *(=-)

     7 September 1999, 22:47 GMT


Re: Re: Ti Calc hub
John Doe  Account Info

No I do not smoke crack.

     8 September 1999, 02:33 GMT

Re: Ti Calc hub
zeromegax

Hmm. I'd think you'd have to write a special game that allows more than 2 players. Seems like an awful lot of work.

     8 September 1999, 01:11 GMT


Re: Ti Calc hub
maddog  Account Info

yes. the idea of a hub is great, but it would be very difficult to construct a working one

     2 October 1999, 20:55 GMT


Re: Re: Re: Link Cable Made From Phone Cord
dleet  Account Info

gee, now doesn't that sound just a wee bit like Grant Stocky's CalcNet that nobody could ever seem to get a hold of? No further comment...

     8 September 1999, 05:07 GMT


Re: Re: Re: Re: Link Cable Made From Phone Cord
Elias Cotton  Account Info

hey if you got a link for me id appreciate it i have no idea what your talking about. im new to ticalc but not to ticalcs so this is legit im serious is this in the archives?

     10 September 1999, 07:49 GMT

1  2  3  

You can change the number of comments per page in Account Preferences.

  Copyright © 1996-2011, the ticalc.org project. All rights reserved. | Contact Us | Disclaimer