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+--- Thread: Teenix multi calc plus (/thread-18207.html)
Teenix multi calc plus - tangdfx - 04-02-2022 08:23 AM
Hello, everyone
Today I introduce the project Teenix multi clac plus. Which is under development yet.
You can have a look at below picture.
[attachment=10492]
The variant hardware:
1 Fluorescent tube display 13 digits ( while the original multi calc use 15 digits LED)
2 The keyboard use cherry mx mechanical shaft
The display effect demonstration:
[attachment=10493]
RE: Teenix multi calc plus - tangdfx - 06-04-2022 06:49 AM
Hi, All
I updated the progress of this project.
Now we can see the running status of this calculator.
Although there is a lot work to be done to improve.
[attachment=10759]
RE: Teenix multi calc plus - mfleming - 06-04-2022 11:41 AM
Can it run Free42?
First!
RE: Teenix multi calc plus - Harald - 06-05-2022 09:46 PM
Very nice project! Very similar to my version, the prototype is still working, but I never managed to get it reliable, the ftdi chip kept dieing, I think it is the supply for the tubes that causes this, but I never got quite to the bottom of the problem. There is too much other stuff going on in my life so I kind of dropped the project.
Hope you have better luck with it! Looks very good so far!
[attachment=10761]
RE: Teenix multi calc plus - EdS2 - 06-06-2022 07:05 AM
(06-04-2022 06:49 AM)tangdfx Wrote: Now we can see the running status of this calculator.
Very nice! Is this 13 digit display easy to get? What voltages does it need?
RE: Teenix multi calc plus - tangdfx - 06-06-2022 11:12 AM
Hi
The VFD is iv27 from soviet union.
The drive voltage is 28V.
RE: Teenix multi calc plus - EdS2 - 06-07-2022 07:03 AM
Thanks!
RE: Teenix multi calc plus - tangdfx - 06-07-2022 12:15 PM
Hiļ¼all
The keyboard updated.
First version with handwritten.
Next version will be printed.
[attachment=10766]