Hello together!
This is my second go on a Raspberry Pi hearted TI-84+. (Note to mods: I really want to make this a new project without any affiliation to the old so I need a new topic).
I have decided for an early hardware version of the 84+ as it's PCB can be cut smaller than on the new versions.
For the keyboard and power management, I am going to use a Teensy 3.2 that will hook up to the 84+'es matrix.
(http://uploads.tapatalk-cdn.com/20161217/bd0bd5400dcc1f37436d3f52cb134779.jpg)
The Raspberry Pi Zero is the perfect solution for the CPU since it is the smallest and the least power-hungry of all Raspberry Pi's.
For the power supply I will be using a slim power bank or an old Samsung Galaxy S3 mini battery (depending on how much space I have left).
To keep the authenticity, I am sticking to a monochrome LCD, however, mine is 128x64px and has the same physical size as the original screen:
(http://i.imgur.com/ICM0Rne.jpg)
That looks real interesting, can't wait to see it done.
Nice, is that a backlit LCD? I am curious about if the entire calc keypad will be functional?
Quote from: Juju on December 17, 2016, 07:51:26 PM
That looks real interesting, can't wait to see it done.
Thanks, I'll keep you all updated :)
Quote from: DJ Omnimaga on December 17, 2016, 09:05:18 PM
Nice, is that a backlit LCD? I am curious about if the entire calc keypad will be functional?
No, I will be removing the backlight as there is no space for it. But yes, the entire keypad will be functional. It will even get mouse emulation.
So I have now also created a better graphic of the keypad matrix:
(http://data.bmuessig.eu/Calculators/TI/84-Plus/PCB_Traces-v05-small.png)
Just compare it with the Sharp one XD:
(http://data.bmuessig.eu/Calculators/Sharp/EL-9650/PCB_Sharp_Traces.png)
Nice Bejeweled clones
Just kidding :P
*pretending I dont know you killed a functional calc for that project* :ninja:
it looks really interesting!! :D
Can't wait for an update
@DarkestEx :)
Quote from: p2 on December 19, 2016, 09:54:31 AM
*pretending I dont know you killed a functional calc for that project* :ninja:
it looks really interesting!! :D
Can't wait for an update @DarkestEx :)
I scrapped about 4 calcs so far for this reiteration of the project.
Edit by p2: removed the "Sent from my BlackBerry DTEK50"
(https://codewalr.us/walrusirc/smileys/bigfrown.gif)
:'( :'( :'(
where do you take the money for all those calcs...? xDIt has to be like 300-350€ for them? xD
btw is the 84+SE still produced? Or are you sacrificing the last ones of a dying species...? :ninja:
Quote from: p2 on December 19, 2016, 10:15:26 AM
btw is the 84+SE still produced? Or are you sacrificing the last ones of a dying species...? :ninja:
It's still in production by Kinpo Philippines.
Quote from: p2 on December 19, 2016, 10:15:26 AM
(https://codewalr.us/walrusirc/smileys/bigfrown.gif)
:'( :'( :'(
where do you take the money for all those calcs...? xDIt has to be like 300-350€ for them? xD
btw is the 84+SE still produced? Or are you sacrificing the last ones of a dying species...? :ninja:
I have about 6 working 84+ and 2 broken ones.
Some i bought on eBay but most ones from my previous school which is of course getting rid of them as Germany is moving away from graphic calculators.
Edit by p2: removed the "Sent from my BlackBerry DTEK50"
how much do you pay for them aaand if they want to get rid of another load, do you think you could contact me? I'd take a few as well O.O
Quote from: p2 on December 19, 2016, 12:03:21 PM
how much do you pay for them aaand if they want to get rid of another load, do you think you could contact me? I'd take a few as well O.O
You could buy one cheap if you really wanted ;)
Btw for the second Calc I am using a currently still fully working casio classpad:
(http://uploads.tapatalk-cdn.com/20161219/4390ae224891a052e878a1f1c5434d9d.jpg)
So to clear it up, I am building two calcs. One ti84 and one with the classpad. But the classpad one is not for me.
Edit:
(http://uploads.tapatalk-cdn.com/20161219/3c4d7d4b5b0dbb332da63c8f17a5219f.jpg)
Edit by p2: removed the "Sent from my BlackBerry DTEK50"
Hola!
I have an update for y'all!
The display is now finally installed and working. ;D
I have also drafted the schematics and ordered the missing parts.
Let's get this one made!
(http://data.bmuessig.eu/Images/Pi84/WP_20170714_02_43_37_scaled.jpg)
(http://data.bmuessig.eu/Images/Pi84/WP_20170714_16_37_38_scaled.jpg)
Looks nice
Looks nice
Looking awesome, I've been messing with a bit of rpi+teensy stuff of late as well.
Will you consider a colour LCD in the future?
Quote from: tr1p1ea on July 21, 2017, 01:01:46 AM
Looking awesome, I've been messing with a bit of rpi+teensy stuff of late as well.
Will you consider a colour LCD in the future?
Nice, good luck with your project!
No, I am not going for a color LCD in the future. The first attempt on this did, but then I decided to go as close to the original as possible on this try.
I have searched high and low for this almost fitting replacement monochrome LCD ;)
Benedikt
Cool, where did you source the LCD from if you dont mind me asking?
What controller does it utilise?
In any case make sure that the calc runs faster than ClassPad 3xx BASIC because I heard that it makes TI-86 BASIC look like it runs fast [emoji14]
Hi there,
You have a really creative and awesome calculator
Is it possible to buy your calculator for Ti84 with the Pi-inside it fully working
, I would love to buy it. I will pay for it.
Also does it have access to online, like can I for example use symbolab or play games on it
Kind regards
Hi @DarkestEx
I really want to buy a ti83 plus pi.
Do the keys works, how much are you charging??
@DarkestEx
Hi there, i really need this ti83 pi calc or ti84 pi. Can i buy it please? How much? You noted some are for sale.
If you still making them i really need your help, i want to buy
Heya, since DarkestEx was last active in 2021, it's possible that he won't see your messages.