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Tiny Basic Microcomputer / Calculator

Started by DarkestEx, June 23, 2015, 10:00:25 PM

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DarkestEx

Heya guys!

A few weeks ago I was working on another of my old projects, which actually got me into electronics. It was a build from the Ben Heck Show.
I started with electronics for building this project, but back then I wasn't able to make it, but now this is not a problem anymore.
The project is to build a small, BASIC computer with an ATMega328p or similar and a 4x20 LCD and a XBox 360 Chatpad.
The programming and the breadboard part is done. There's only one program bug to fix and still needs to be rewired onto a PCB and put into a nice case.
Because I don't have a PIC programmer, I had to write my own Chatpad driver based of the work from another person's reverse engineering.

Here is a picture for you:
  • Calculators owned: TI-84+, Casio 101-S, RPN-Calc, Hewlett-Packard 100LX, Hewlett-Packard 95LX
  • Consoles, mobile devices and vintage computers owned: Original Commodore 64C, C64 DTV, Nintendo GameBoy Color, Nintendo GameCube, Xbox 360, PlayStation 2

Snektron

Whoa that looks cool! I should do more electronics too <_<
  • Calculators owned: TI-84+
Legends say if you spam more than DJ Omnimaga, you will become a walrus...


alexgt

Looks awesome O.O, I used to watch the ben heck show...

I want to get into electronics and stuff put the reason I program is because I can do it on the go with my calc :) but you cant do electronics on the go :(
  • Calculators owned: Ti-84+, Ti-Nspire, Hp Prime, Broken HP Prime, HP 48SX

DJ Omnimaga

I like it, so far :D. Can you display animations or even do demos on the screen at a fast enough speed?
  • Calculators owned: TI-84 Plus C Silver Edition, TI-84 Plus CE, Casio fx-CG10, HP Prime, fx 1.0 Plus, fx-7400G Plus, fx-9750G Plus, fx-9860G, HP 39gII
  • Consoles, mobile devices and vintage computers owned: Huawei P30 Lite

p4nix

I think he uses a text only screen, if I'm right.

DarkestEx

July 01, 2015, 01:30:37 PM #5 Last Edit: July 01, 2015, 01:37:53 PM by DarkestEx
Yes, I can only display text and possibly a 20x16px graphic on the screen.
In theory I could just connect one of my graphic LCD's for a 128x64px image.
  • Calculators owned: TI-84+, Casio 101-S, RPN-Calc, Hewlett-Packard 100LX, Hewlett-Packard 95LX
  • Consoles, mobile devices and vintage computers owned: Original Commodore 64C, C64 DTV, Nintendo GameBoy Color, Nintendo GameCube, Xbox 360, PlayStation 2

Unicorn

Cool!

So you can have multiple screens?
  • Calculators owned: I own all of them: PICKACHUP TI 84+ CSE TI 83+ SE TI something something ??? ??? ??? ??? ???
  • Consoles, mobile devices and vintage computers owned: PICKACHUP ??? ??? ??? ??? ???



??? ??? ??? ??? ???

DarkestEx

Quote from: Unicorn on July 01, 2015, 01:58:59 PM
Cool!

So you can have multiple screens?
Yeah, that would certainly be possible :)
  • Calculators owned: TI-84+, Casio 101-S, RPN-Calc, Hewlett-Packard 100LX, Hewlett-Packard 95LX
  • Consoles, mobile devices and vintage computers owned: Original Commodore 64C, C64 DTV, Nintendo GameBoy Color, Nintendo GameCube, Xbox 360, PlayStation 2

DJ Omnimaga

Quote from: DarkestEx on July 01, 2015, 01:30:37 PM
Yes, I can only display text and possibly a 20x16px graphic on the screen.
In theory I could just connect one of my graphic LCD's for a 128x64px image.

20x16 DOOM clone? :P
  • Calculators owned: TI-84 Plus C Silver Edition, TI-84 Plus CE, Casio fx-CG10, HP Prime, fx 1.0 Plus, fx-7400G Plus, fx-9750G Plus, fx-9860G, HP 39gII
  • Consoles, mobile devices and vintage computers owned: Huawei P30 Lite

alexgt

I would be DOOMED trying to do that. Almost as bad as Nagoji 4x3 :P
  • Calculators owned: Ti-84+, Ti-Nspire, Hp Prime, Broken HP Prime, HP 48SX

Snektron

I wanna try building a smartwatch some time :P Maybe you can try that too
  • Calculators owned: TI-84+
Legends say if you spam more than DJ Omnimaga, you will become a walrus...


alexgt

  • Calculators owned: Ti-84+, Ti-Nspire, Hp Prime, Broken HP Prime, HP 48SX

Unicorn

  • Calculators owned: I own all of them: PICKACHUP TI 84+ CSE TI 83+ SE TI something something ??? ??? ??? ??? ???
  • Consoles, mobile devices and vintage computers owned: PICKACHUP ??? ??? ??? ??? ???



??? ??? ??? ??? ???

p4nix

July 03, 2015, 06:50:10 PM #13 Last Edit: July 03, 2015, 06:52:00 PM by p4nix
Is it possible to build a reasonably flat wearable computer using those components? I mean forearm-mounted? Would be quite interesting. I don't know how big the keyboard and contoller are about, but I always hate those displays because they are way too big imo.

EDIT: schematics would be cool if they are not exactly Ben Heck's, otherwise I'll check them.

DarkestEx

Quote from: p4nix on July 03, 2015, 06:50:10 PM
Is it possible to build a reasonably flat wearable computer using those components? I mean forearm-mounted? Would be quite interesting. I don't know how big the keyboard and contoller are about, but I always hate those displays because they are way too big imo.

EDIT: schematics would be cool if they are not exactly Ben Heck's, otherwise I'll check them.
Well, if one would go all smd and use an OLED instead of a LCD it could absoltely work.
  • Calculators owned: TI-84+, Casio 101-S, RPN-Calc, Hewlett-Packard 100LX, Hewlett-Packard 95LX
  • Consoles, mobile devices and vintage computers owned: Original Commodore 64C, C64 DTV, Nintendo GameBoy Color, Nintendo GameCube, Xbox 360, PlayStation 2

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