So the main program is more of a tool then an educational device regardless though it fits

I am making a resistor calculator for the TI84CSE.


A simple mockup. (Resistor will be bigger in the middle as this is a mockup )

You select which band you want to change with ← → then you change its color with ↑ ↓
The value at the bottom will be updated in real time as you change the values.

It will support both 4 and 5 band resistors.


I have been toying with the idea of a quiz mode to fit it more into this category. It obviously won't hurt. But would it really be worth the size on a utility program it will become after the contest?

How about F1-F5 select the band & a popup window for the color, 0-9 on the keyboard?
Can you make purple?


.... wish I thought of it first.

That's a good idea but I feel that would be less intuitive? For me just using the d pad to make all the adjustments makes more sense. Now thinking about it though I will probably be able to code in the ability to "jump" to the appropriate band/color with the suggested keys. Its definitely an idea worth looking into.


And since I am writing this in asm. AFAIK I can use any color the LCD supports so yes purple

Gotta love the topic love I never get!

Anyway more eye candy.

Most of the graphical back end work is done. Now its just tacking on a user interface.




As for the band selection idea GW-Basic had after some thought i plan to include the ability to use F1-5 to select the resistor but you will still have to scroll with dpad to select each color


EDIT:
Oh look we can interface with it!


Edit2:
Added support for the last 2 bands
Added F# key navigation (accidentally left out of screen shot)
Added About Screen


Current Major ToDo: Add keydebouncing. Kinda hard to control as of the moment.

Also is there a bcall to draw text using the Small graph screen font?

That looks really well done so far To be honest, I don't know as much as I'd like to about resistors, so I might be able to find some use in this.

Happily, yes: _vputs and _vputmap, just like on the older calculator. Keep up the great work here, and accept my admiration for jumping straight to assembly for this. I wanted to note the third digit band before the multiplier exists for 1% tolerance and lower, while the multiplier directly follows the second digit band for 5% and 10% tolerance.

Slowly getting there. Wow I've come a long way from that mockup.

Have to fix the silver/Gold Multiplier bands They are doing the wrong values for some of the combinations :/

Looks pretty good so far

Other than bug issues, anything else you plan to add to this?

A small text blurb stating each color. A quick select box for each band using F1-F5. And a reference screen containing a resistor chart.

And hey look we have a resistor chart!



Thoughts on it?

Ooh, pretty. Gold and silver look like they're missing omegas in the Mult column though.

That they were fixed was just a simple data miss entry whoops!



Thanks for pointing that out

Does anyone think I should use a lighter green? It feels really dark looking at this screen shot

After about a week of fighting with Resistor value simplification. I Fixed it(I hope). And Ended up shrinking the program by a few hundred bytes


Gif has all the current features.

Things That must be done!

-Fix Dat menu bug
-Add in a text saying current band color.
-Write readme
-clean up source code

Optional Features:

-0-9 as hotkeys. Use them to quicky change the resistor band values
-QuickMenu - Decided against this to much effort to code ^ is faster for all but the %'s

4 more days!

Although you didn't post about it yet (is it a secret?) you seem to have finished off the required items on your to-do list, and presumably made some decisions about the optional features, since you submitted your contest entry. I hope you're strongly considering using 0-9 as hotkeys, because that would give you some semblance of value->colors to complement the colors->value feature.

I most definitely was not keeping it a secret I just have not had time to post yet! I had a very busy weekend with the extended family :p

Time pending I plan to add the short cuts it's a useful feature and will make it easier to type the values in faster

I'm sure you already thought of this, but I recommend that pressing a number key both enter that band value and advance the cursor to the next band.