Don't have an account? Register now to chat, post, use our tools, and much more.
Latest Headlines
Online Users
There are 127 users online: 9 members, 94 guests and 24 bots.
Members: Ashbad, cheapie, DHerls, HOMER-16, ordelore.
Bots: Spinn3r (1), MSN/Bing (1), Magpie Crawler (3), VoilaBot (1), Googlebot (18).
RSS & Social Media
SAX
You must log in to view the SAX chat widget
|
| Author |
Message |
|
Spyro543
Member
Joined: 17 Sep 2011
Posts: 129
Location: Ohio
|
 Posted: 25 Oct 2011 07:03:47 pm Post subject: CalcNet questions |
 |
|
I saw some videos about CalcNet today and I want to try it sometime with my friends. However, I have two questions.
1. How do I connect 3 calcs?
2. Can I use a USB cord to link a calc (maybe 2 serial cables and 1 USB cord)?
_________________
Spyro likes PICs!
http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en026331 |
|
| Back to top |
|
|
qazz42
Vampire Killer
Joined: 07 Apr 2010
Posts: 4177
|
| Posted: 25 Oct 2011 07:23:28 pm Post subject: |
|
|
1. You need a arduino board for that, might want to ask Kerm `-`
2. Yes, I do believe you are required to use USB if you lack an arduino  (for both calc to calc and calc to computer)
_________________
 |
|
| Back to top |
|
|
Spyro543
Member
Joined: 17 Sep 2011
Posts: 129
Location: Ohio
|
|
| Back to top |
|
|
qazz42
Vampire Killer
Joined: 07 Apr 2010
Posts: 4177
|
| Posted: 25 Oct 2011 07:27:02 pm Post subject: |
|
|
or, for normal calcnet you can use either `-` it depends on how many calcs you are connecting. for more than 2 calculators you need an arduino. for just 2 calculators, on the other hand, you just need USB
_________________
|
|
| Back to top |
|
|
Spyro543
Member
Joined: 17 Sep 2011
Posts: 129
Location: Ohio
|
|
| Back to top |
|
|
Tari
Systems Integrator
Joined: 03 Jul 2006
Posts: 2112
Location: Always-winter, Michigan
|
| Posted: 25 Oct 2011 08:54:22 pm Post subject: |
|
|
| qazz42 wrote: | | or, for normal calcnet you can use either `-` it depends on how many calcs you are connecting. for more than 2 calculators you need an arduino. for just 2 calculators, on the other hand, you just need USB |
Just.. no.
You only need a bridge (eg Arduino) to interface with gCn. For calculators with direct-USB capability, you can use the calculator as its own bridge over USB.
For local calcnet, you just need every device to share a common bus, for example by splicing several link cables together. There is no capability for local calcnet over USB, because the link layer depends on the two common lines with pull-ups.
_________________
 
Ask questions the smart way · タリ |
|
| Back to top |
|
|
souvik1997
Guru-in-Training
Joined: 19 Apr 2010
Posts: 2870
|
| Posted: 25 Oct 2011 09:15:10 pm Post subject: |
|
|
You could use an Arduino to act as a "hub" for several I/O cables to come together so that more than two calculators could be connected, but splicing the cables works just as well.
_________________
CALCnet Tournament-38%
deviantArt
 |
|
| Back to top |
|
|
KermMartian
Site Admin
Joined: 14 Mar 2005
Posts: 55751
Location: Earth, Sol, Milky Way
|
| Posted: 26 Oct 2011 03:18:53 am Post subject: |
|
|
Souvik, in that case you're not using the Arduino for anything other than a patch board, which is a massive, massive waste. To second Tari and correct Qazz, you just splice multiple link cables together such that all the tips are connected, all the rings, and all the grounds. The quick and dirty method would be to cut up link cables and splice them, which means you can have 2N calculators connected with N cables. Cut up 2 cables, and you have four plugs to connect four calculators. Three cables = six calcs, etc. The slower and cleaner method would be to use a bunch of 2.5mm stereo sockets to build a hub of sorts, which would only allow N calculators for N cables.
_________________
 
 |
|
| Back to top |
|
|
Spyro543
Member
Joined: 17 Sep 2011
Posts: 129
Location: Ohio
|
|
| Back to top |
|
|
KermMartian
Site Admin
Joined: 14 Mar 2005
Posts: 55751
Location: Earth, Sol, Milky Way
|
| Posted: 26 Oct 2011 05:46:54 am Post subject: |
|
|
| Spyro543 wrote: | | Ok, so I think I can get this cable thing done. So if I have a simple spliced hub that can connect 4 calculators, can I also just use it to connect 2 or 3 calcs? |
Indeed, there's nothing wrong with leaving floating ends in CALCnet, since it relies on pulldowns for transmission. If you go with the splicing route, it might be good to use some three-strand wire to extend some of the cables, too.
_________________
|
|
| Back to top |
|
|
|
Register to Join the Conversation
Have your own thoughts to add to this or any other topic? Want to ask a question, offer a suggestion, share your own programs and projects, upload a file to the file archives, get help with calculator and computer programming, or simply chat with like-minded coders and tech and calculator enthusiasts via the site-wide AJAX SAX widget? Registration for a free Cemetech account only takes a minute.
» Go to Registration page
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
© Copyright 2000-2013 Cemetech & Kerm Martian :: Page Execution Time: 0.032443 seconds.
|
![[t]](/forum/templates/Cemetech6/images/twitter.png)
![[t]](/forum/templates/Cemetech6/images/fb.png)
![[RSS]](/forum/templates/Cemetech6/images/rss.png)
