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SUCCESS! Touchscreen RPN full function calculator
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SUCCESS! Touchscreen RPN full function calculator

by jim_lee on Wed Jan 18, 2017 10:48 pm

Been working on this for a few weeks and I finally have it running in a case!

Here's a picture
calc.jpg
calc.jpg (137.02 KiB) Viewed 610 times


And for the scoffers, here's a video of it running.
https://youtu.be/s-vngUi7-kw

Uses the 2.8" TFT Touch Shield for Arduino w/Capacitive Touch #1947. A lipo and voltage booster. (Soon to be charger, bought wrong part.) The processor is a Teensy 3.2. The 3D printed case was a project in itself. How did people ever do this without 3D software and printers to do "what if"s and test the fit of things? Then to redo everything when you realize you designed it with the screen in backwards.. Good lord!

-jim lee

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Re: SUCCESS! Touchscreen RPN full function calculator

by adafruit_support_bill on Thu Jan 19, 2017 6:56 am

Beautiful! Thanks for posting.

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Re: SUCCESS! Touchscreen RPN full function calculator

by jim_lee on Fri Jan 20, 2017 1:21 am

I started a writeup on the building of this : http://www.leftcoast.biz/iWeb/Left_Coast/The_calculator.html

And I uploaded the 3D files on thingaverse : http://www.thingiverse.com/thing:2049445

Enjoy!

-jim lee

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Re: SUCCESS! Touchscreen RPN full function calculator

by adafruit_support_bill on Fri Jan 20, 2017 7:02 am

I may just have to build one. I really miss my old HP-16C.

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Re: SUCCESS! Touchscreen RPN full function calculator

by jim_lee on Fri Jan 20, 2017 2:53 pm

I know the feeling. I had an 11c. and, a HP71B. They were quite the combo for college.

-jim lee

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Posts: 680
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Re: SUCCESS! Touchscreen RPN full function calculator

by jim_lee on Fri Feb 24, 2017 2:48 am

Found an odd referring link from Adafruit logged on some of my stuff. So I tracked it down and WOW much to my surprise I discovered https://blog.adafruit.com/2017/02/08/from-the-forums-homemade-2-8-touchscreen-reverse-polish-notation-calculator-with-teensy-3-2/

THANKS! My 5 minutes of fame!

Wait 'till you see the next project..

-jim lee


P.S. While I'm famous, I really need some more of these Cap Touch-screens : https://www.adafruit.com/product/1947
Are they in the pipeline somewhere?

jim_lee
 
Posts: 680
Joined: Thu May 24, 2012 8:24 pm

Re: SUCCESS! Touchscreen RPN full function calculator

by adafruit_support_bill on Fri Feb 24, 2017 7:04 am

I don't have a ETA for those, but if you sign up for notifications, you will get an email as soon as we have them in stock.

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Please be positive and constructive with your questions and comments.