Author Topic: Adaptor for the TI84+SE  (Read 2061 times)

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Offline TheCoder1998

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Adaptor for the TI84+SE
« on: January 10, 2014, 10:46:38 am »
Hi guys,

i'm not sure if this is the right board to ask this, but i've got a question.
the batteries in my calc always die so soon so are there any adaptors for it, or could i make one myself?
any help would be highly appreciated  ;D
i've got an TI84+SE and i live in europe
« Last Edit: January 10, 2014, 11:54:03 am by TheCoder1998 »
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Offline Sorunome

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Re: Adaptor for the TI84+SE
« Reply #1 on: January 10, 2014, 10:55:06 am »
i just use reachargables and recharge 'em.

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Offline TheCoder1998

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Re: Adaptor for the TI84+SE
« Reply #2 on: January 10, 2014, 11:10:41 am »
that's a good idea, i might consider that. thanks  :thumbsup:

but my question still isn't answered.
are there any adaptors for the 84+SE or could i construct anything myself?
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Offline ben_g

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Re: Adaptor for the TI84+SE
« Reply #3 on: January 10, 2014, 11:31:14 am »
that's a good idea, i might consider that. thanks  :thumbsup:

but my question still isn't answered.
are there any adaptors for the 84+SE or could i construct anything myself?
Find an adapter that has an output of 5-6V DC (you may be able to use an old cellphone charger for this), cut the plug that goes in the cellphone/watever device it was meant for, strip the ends off the cable and solder the + wire of the adapter to the + side of the battery compartiment (the batteries are all connected serially, connect it to the only + side that isn't connected to the - side of an other battery), and solder the other wire to the - side of the battery compartiment (which is the - side that isn't connected to any + side). You probably also want to cut the cable somewere between the calc and the plug and solder a connector inbetween.

The most important parts are:
 - Make sure the output of the adapter is not higher than 6V
 - Make sure the output of the adapter is DC, not AC
 - Make sure the polarity is correct. Use a voltmeter to test this.
If you respect the above, your calc should be fine, regardless of what happens. But to be really sure, wait for someone who knows more about how the calc functions to verify this post.
« Last Edit: January 10, 2014, 11:35:32 am by ben_g »
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Offline TheCoder1998

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Re: Adaptor for the TI84+SE
« Reply #4 on: January 10, 2014, 11:35:56 am »
okay thanks, i didn't know if i could just do that :)

EDIT: is there anything else i should be careful with?
because i'd rather not break my expensive calculator :P

EDIT2: i probably know this already, but i ask it anyway. could i use a simple usb charger?
« Last Edit: January 10, 2014, 11:46:47 am by TheCoder1998 »
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Offline fb39ca4

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Re: Adaptor for the TI84+SE
« Reply #5 on: January 10, 2014, 12:04:02 pm »
A USB charger should be fine, although you can't just plug it into the USB port. (On Nspires, however, you can.) If you want to avoid soldering directly to the calculator, you can find some battery-sized cylinders and attach a contact point and wire to an end.

Offline TheCoder1998

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Re: Adaptor for the TI84+SE
« Reply #6 on: January 10, 2014, 12:47:01 pm »
yeah, i already thought that you couldn't just plug it into the usb (a friend of mine broke his calc when he tried to charge it that way)
but i'll just try something and hope it works out :)
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Offline ben_g

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Re: Adaptor for the TI84+SE
« Reply #7 on: January 10, 2014, 12:50:47 pm »
If you don't solder the wires to the calc, then make sure they're attached firmely to the calc, because if one gets loose, then you'll get a RAM clear (like if you pull a battery)
My projects
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 - Oxo, with single-calc multiplayer and AI (axe) RELEASED (screenshot) (topic)
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 - A 3D collision detection library (axe) RELEASED! (topic)(screenshot)(more recent screenshot)(screenshot of it being used in a tilemapper)
Spoiler For inactive:
- A first person shooter with a polygon-based 3d engine. (z80, will probably be recoded in axe using GLib) ON HOLD (screenshot)
 - A java MORPG. (pc) DEEP COMA(read more)(screenshot)
 - a minecraft game in axe DEAD (source code available)
 - a 3D racing game (axe) ON HOLD (outdated screenshot of asm version)

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Offline TheCoder1998

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Re: Adaptor for the TI84+SE
« Reply #8 on: February 13, 2014, 11:29:45 am »
well, i'm now using rechargeble batteries, so thanks for the help! ;D
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