Author Topic: TI-Nspire USB serial breakout boards  (Read 17428 times)

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Offline Hooloovoo

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Re: TI-Nspire USB serial breakout boards
« Reply #15 on: December 01, 2014, 09:08:05 pm »
This is the holy grail of Nspire dev. O.O Do want.
* Streetwalrus drools

And yes, the Nspire can charge via the dock as shown by the mutli calc docking station. I have no idea how it works though.
The longest pin on the connector is ground, and the second longest is power. It's that easy.
"My world is Black & White. But if I blink fast enough, I see it in Grayscale." -tr1p1ea
Spoiler For some of the calcs I own:



(actually I have quite a few more than this, but I don't feel like making bars for them all.)

Offline tangrs

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Re: TI-Nspire USB serial breakout boards
« Reply #16 on: December 05, 2014, 12:33:38 am »
Wow that looks even nicer than the previous one now. I am curious about how much this would cost?

I still haven't worked out the details but a ballpark figure would be around AUD$35 (around USD$29.30) plus shipping. It'll be the board and a high quality 3D printed clamp (pre-assembled).

Version 1 should be available early January. I should have about 10 in stock but I'll get more manufactured if there's high demand. At the moment, I'm just waiting on a stencil to come so I can start bulk soldering efficiently.

After that, I'll start working on a second version with a USB host port and charging via the dock but this will take a while.

Quote
Also make sure to keep this maintained, because we never know if TI might perform slight changes on Nspire cases to make sure that this connector no longer fits. :P

For sure :)
« Last Edit: December 05, 2014, 12:40:12 am by tangrs »

Offline tangrs

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Re: TI-Nspire USB serial breakout boards
« Reply #17 on: December 05, 2014, 12:40:54 am »
Also, for the next version, do more of you prefer MicroUSB or MiniUSB?

Offline Adriweb

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Re: TI-Nspire USB serial breakout boards
« Reply #18 on: December 05, 2014, 12:45:31 am »
I suppose MiniUSB is more common ?
(As in, anyone can get their hands on a cable from whatever device they already own - might not be the case for MicroUSB)
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Offline Hooloovoo

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Re: TI-Nspire USB serial breakout boards
« Reply #19 on: December 05, 2014, 12:47:17 am »
If you have an Nspire, you are very likely to own a mini usb cable methinks.
"My world is Black & White. But if I blink fast enough, I see it in Grayscale." -tr1p1ea
Spoiler For some of the calcs I own:



(actually I have quite a few more than this, but I don't feel like making bars for them all.)

Offline Streetwalrus

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Re: TI-Nspire USB serial breakout boards
« Reply #20 on: December 05, 2014, 04:07:45 am »
Yeah I have over 9000 mini USB cables but never enough micro USB (though I have 3 now instead of 1 but one of them doesn't work for data, only power <_<).

Offline tangrs

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Re: TI-Nspire USB serial breakout boards
« Reply #21 on: December 05, 2014, 08:03:44 am »
MiniUSB it is then :)

Offline DJ Omnimaga

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Re: TI-Nspire USB serial breakout boards
« Reply #22 on: December 08, 2014, 02:05:10 am »
MiniUSB would be best indeed. Micro is getting much more common with mobile devices nowadays and the HP Prime comes with one but for a long while most devices used miniUSB.

Offline tangrs

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Re: TI-Nspire USB serial breakout boards
« Reply #23 on: December 08, 2014, 09:18:18 pm »
A little late but the final prototype looks like this:





In the end, I decided that a clamp type design would work best since it fits like a adapter/plug rather than a whole case (it also cuts down on 3d printing time, complexity and material).

I will also release the STL files and dimensions of the PCB board so people can print or modify the 3d printed case to their own likings.

Offline Adriweb

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Re: TI-Nspire USB serial breakout boards
« Reply #24 on: December 08, 2014, 10:56:07 pm »
Very nice !

(crossposted)
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Offline DJ Omnimaga

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Re: TI-Nspire USB serial breakout boards
« Reply #25 on: December 09, 2014, 02:58:07 pm »
Looks very good. :)

Offline tangrs

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Re: TI-Nspire USB serial breakout boards
« Reply #26 on: December 12, 2014, 12:54:21 am »
Does anyone have any more information on how the USB host port works? I did manage to find this but there aren't any concrete values...

Offline Hooloovoo

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Re: TI-Nspire USB serial breakout boards
« Reply #27 on: December 12, 2014, 12:57:34 am »
I have tried and failed to connect a USB port to the base of the calculator and I'm not sure why it didn't work. I wonder if the circuitry is necessary, because I didn't have any of those. Iirc, that graphic thing was from one of the lab cradle circuits or something and so might be able to be used the same way.
"My world is Black & White. But if I blink fast enough, I see it in Grayscale." -tr1p1ea
Spoiler For some of the calcs I own:



(actually I have quite a few more than this, but I don't feel like making bars for them all.)

Offline Adriweb

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Re: TI-Nspire USB serial breakout boards
« Reply #28 on: December 12, 2014, 02:26:47 am »
Does anyone have any more information on how the USB host port works? I did manage to find this but there aren't any concrete values...
I believe Excale had done some light testings initially but didn't get something working. But I guess you'd have to ask Critor or Excale directly, they are the one who tried things...
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Offline Vsod99

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Re: TI-Nspire USB serial breakout boards
« Reply #29 on: December 15, 2014, 02:35:03 pm »
A little late but the final prototype looks like this:





In the end, I decided that a clamp type design would work best since it fits like a adapter/plug rather than a whole case (it also cuts down on 3d printing time, complexity and material).

I will also release the STL files and dimensions of the PCB board so people can print or modify the 3d printed case to their own likings.
I want this. now.  >:(