NP-41 Emulator (may be)

[Chris Chung]

@massimo, @rprosperi, I don't make this intending to sell them. But it's also good to know that a project is appreciated.

@thomas, looks like the font table had a skip entry somewhere, will look for that in my code. This is the reason I put the video here. I can't really debug the project well as I don't have a physical unit, nor am I familiar w/ it. Still learning via a copy of the paper manual.

@didier, not sure about the display yet. I was just glad to migrate Eric's code onto the platform, the LCD segment driving is a plus.

There are 3 options that I thought about regarding the display.

a) stock 6 digit 14 segment LED modules are available, we can have 2 of these + labelled round led for the indicators like PGM, USER, ALPHA, etc.

b) graphic LCD module, characters will be 5x7 dot characters.

c) custom LCD glass, modelled from the original.

The MCU I am using will do well on all options. My preference is c). This is a retro toy thing project for me so it's important to have the 14 segment glass in it.

Cost will be an issue though, I will be trying some custom glass providers and see if it's an affordable solution. From my research, the setup (w/ 3-5 samples) would cost $900-$1000 and unit cost is like $4 or $5 per @ 500/1000 unit batches.

Now what do you think (regarding the display)?