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Author Topic: Doing too much with the TI-Nspire dock connectors?  (Read 14134 times)

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Offline Spyro543

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #15 on: September 09, 2011, 02:08:30 pm »
OS3.1 removed print() from what I heard... Why would TI do that unless they are against us???
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Offline Jim Bauwens

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #16 on: September 09, 2011, 02:37:17 pm »
Well, it ins't actually removed (I tested it today), it just doesn't print to the console/serial port anymore (which renders it useless).
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Offline Sebasu

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #17 on: September 09, 2011, 09:58:04 pm »
ok, thank you so much
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Offline willrandship

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #18 on: September 10, 2011, 12:39:33 am »
That means it's printing to something else, then, right? I guess it could be to NULL, but it might be printing to another, internal RS232 or JTAG line.
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Offline Jim Bauwens

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #19 on: September 10, 2011, 02:47:16 am »
Maybe, I don't know. As far as I can see it doesn't print to any other port on the dock.
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Offline willrandship

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #20 on: September 11, 2011, 05:32:30 pm »
But the dock isn't the only connector. Datamath says there's quite a few other connectors on the inside that have RS232s, which might be separately mapped.
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Offline Jim Bauwens

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #21 on: September 12, 2011, 02:32:55 am »
Yes, I know, but I'm not going to open my calc to find out :)
Unless you send me some to test :p
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Offline willrandship

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #22 on: September 14, 2011, 02:21:03 am »
No. :P I'd rather disassemble the OS to find out. And I don't even code in Assembly.

It's not like it makes a difference anyways, since no one would dare use them.

By the way, a great way to get all the dock connector pins hooked up: Take eraser cut to the width of the connector so it fits snugly. Color over all the gold contacts with a pencil. Push the eraser in and out, with a good amount of force pointing downward, into the contacts. Pull it out: You will have all the contacts clearly marked. Begin stabbing wires through the eraser, and bending them over their respective lines.

A connector is born!
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Offline Jim Bauwens

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #23 on: September 14, 2011, 03:37:15 am »
Very nice :)
But I had fun soldering directly to the dock port :p
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Offline Levak

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #24 on: September 14, 2011, 07:57:12 am »
Talking about connectors, few months ago I made a pcb chip for it :
http://levak.free.fr/ftp/nspire/dock-nspire/noname-brd.svg

Using KiCAD : http://levak.free.fr/ftp/nspire/dock-nspire/
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Offline willrandship

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #25 on: September 15, 2011, 11:24:30 pm »
But see, that's still the female side. I just wish they had made it less evil.

Raise of hands: Who would be willing to open up an 84+ Pad to install an SD card and increase Nspire Flash by 2 GB or more? The pins are available, only thing that remains is figuring out how to address them in C/Assembly and it's set. I hope they're just memory-mapped, but I can't be sure.
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Offline Sebasu

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #26 on: September 27, 2011, 02:17:49 pm »
I have a question:
I have a TI-Nspire CAS With touchpad, as we know the TI-Nspire Dock conector can use a 3.3 Volts external source
but when i read de potential between pin2 (Vcc) and pin5 (GND), while using batteries, it generates 3.3 volt output
the fan velocity depend of the volts of the source, but what about the ampers?, can it be dangerous?
if i connect a fan to my dock connector, could i damage my calculator?
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Offline DJ Omnimaga

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #27 on: September 27, 2011, 02:35:06 pm »
Quote from: willrandship on September 15, 2011, 11:24:30 pm
But see, that's still the female side. I just wish they had made it less evil.

Raise of hands: Who would be willing to open up an 84+ Pad to install an SD card and increase Nspire Flash by 2 GB or more? The pins are available, only thing that remains is figuring out how to address them in C/Assembly and it's set. I hope they're just memory-mapped, but I can't be sure.
I wish TI wouldn't try to lock down what we try to do nor removing the dock connector on some calcs, because then it would open the possibility of third-party TI-Nspire add-ons, by third-party companies. Kinda like the TI-92 modules we could insert below the calc to add memory, but not done by TI instead maybe it could be done with the dock connector or something. Some sort of TI-Nspire CX memory expansion pack or SD card loader. It would be a huge long-term compatibility risk at this point, though.

As for having an SD card in my calc it would be nice providing it's easy to install for someone who isn't good at electronics. Also I certainly won't do it with my 83+ because the screws are so old and dusty that they're stuck in there x.x
« Last Edit: September 27, 2011, 02:35:46 pm by DJ_O »
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Offline willrandship

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #28 on: September 28, 2011, 11:45:14 pm »
Well, it's not like we really need the dock connectors for anything. We could just as easily gain thousands of options given some decent USB docs, like joysticks, hubs, external sound cards, SD Card Readers, ethernet, printers, or pretty much anything we want. However, the direct-IO approach is far more "hacking-friendly" because of its simpler design.

Installing the SD card would be paramount to doing the rs232 adapter, since it doesn't actually require any extra hardware besides the card and the calculator. It would need more pins, but they wouldn't need to be next to each other. Plus, Nspire Only :P

@Sebasu the calculator has 6V unregulated coming from the batteries, and 3.3V that is regulated through calc hardware. Why don't you try connecting it to the batteries directly instead? It's safer, since any problems won't ruin your calculator.
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Offline Sebasu

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Re: Doing too much with the TI-Nspire dock connectors?
« Reply #29 on: October 10, 2011, 07:49:32 pm »
ok, it is true that it would be simpler even connect directly to the battery, my question was for experimental purposes, to control the fan with a lua menu and the ability to enable the port for LED retroilumination and other possibilities, thanks for replying
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