PX41CX

[agarza]

(04-30-2024 10:16 PM)Helix Wrote:  Will the letters be blue?

Unfortunately there are only 3 colors: White, Gold, and Inverse White.
So the Alpha Letters have to be white.

[agarza]

(05-01-2024 02:21 AM)Garth Wilson Wrote:  Backlights and color displays are power hogs, and would require a rechargeable battery that you have to recharge regularly like people do their phones every night.  I much prefer reflective LCDs and handheld computers & calculators that let me go months or even years without thinking about the batteries.

That was also my reasoning. The display has such a good contrast that you really don't need backlight. I'll share a video soon to show the display in action.

[Helix]

That’s a valid argument.
Is the contrast still good in low-light conditions? I’ve read somewhere that the SwissMicros DM32-41X-42, which have generally fantastic contrast, are not so good in low-light conditions.

At least, white letters will remain easily readable.

[ingab]

Hi agazz, my name is Andrea and I would like to buy the px 41 cx calculator. What is its price? I live in Italy?

Best regards

[Massimo Gnerucci]

(05-06-2024 11:48 AM)ingab Wrote:  I live in Italy?

Aren't you sure about that?!? ;)

SCNR.

[Pierre]

Just a photo to compare the screen brightness between 3 calculators...

In your opinion, which one do I prefer ?

[keenerb]

(05-06-2024 01:27 PM)Pierre Wrote:  Just a photo to compare the screen brightness between 3 calculators...

In your opinion, which one do I prefer ?

Having just assembled my PX15C, I can guarantee you will have at least TWO sales of the PX41CX as soon as it goes on the market!

[agarza]

(05-06-2024 11:48 AM)ingab Wrote:  Hi agazz, my name is Andrea and I would like to buy the px 41 cx calculator. What is its price? I live in Italy?

Best regards

Hi Andrea,

Thank you for your interest, I'll share the details in this group once I feel it's ready.

[Farron]

Hello,

I think I will also be placing an order for this.
New, smoother buttons, 4-line display ... what more could you want?

[agarza]

(05-06-2024 01:27 PM)Pierre Wrote:  Just a photo to compare the screen brightness between 3 calculators...

In your opinion, which one do I prefer ?

Comparing the new display...

Backlight is off on the old PX41CX.

[Garth Wilson]

I don't think the picture is being fair to the HP-41, as it is not being held at the normal viewing angle.  My own HP-41cx's definitely have better contrast than that, but I can make them fade out a little bit like what's in the picture if I tip them to the angle the picture was taken at.

[rprosperi]

The new one looks excellent Alex, this just keeps getting better!!

Now that HHC2024 details have been announced, hopefully you can attend and show some off in-person!

[Helix]

The contrast is indeed impressive.
However, I have now another nitpicking remark: I find the coma and the dot on the display very small! I think that it should be improved.
I also hope that the firmware will be easy to upgrade.

[agarza]

(05-07-2024 12:01 PM)rprosperi Wrote:  The new one looks excellent Alex, this just keeps getting better!!

Now that HHC2024 details have been announced, hopefully you can attend and show some off in-person!

I'd be delighted to attend!

[agarza]

(05-07-2024 08:19 PM)Helix Wrote:  The contrast is indeed impressive.
However, I have now another nitpicking remark: I find the coma and the dot on the display very small! I think that it should be improved.
I also hope that the firmware will be easy to upgrade.

Firmware will be easy to update.

About the fonts... currently the fonts are 24x16 pixels and the coma/dot is 3 pixel wide. Maybe make the fonts 15 pixels wide and the coma/dot 4 pixels wide?

[Helix]

Yes, a slightly reduced font would be better. I think the dot should have at least the same thickness as the lines in the characters.
Also, reducing slightly the height of the font would increase the space between the lines, which is currently very small, and allow a more prominent comma.

[Farron]

What I have just noticed ... Is the display shorter? It doesn't go all the way to the right edge of the cut-out.

[keenerb]

I would very much like to be able to protect/backup/restore the memory contents of your hobby calculators, is that anything that might be in the realm of possibilty? Even if it's just for the PX41CX it'd be really nice.

[agarza]

(05-09-2024 12:23 AM)Helix Wrote:  Yes, a slightly reduced font would be better. I think the dot should have at least the same thickness as the lines in the characters.
Also, reducing slightly the height of the font would increase the space between the lines, which is currently very small, and allow a more prominent comma.

I'll do some tests with a smaller font to see how it looks.

[agarza]

(05-09-2024 04:09 AM)Farron Wrote:  What I have just noticed ... Is the display shorter? It doesn't go all the way to the right edge of the cut-out.

Actually the active area of the new display is taller and a bit wider.
OLD LCD 47.98x15.98mm
NEW LCD 48.50x23.67mm

But it is offset to the left.