P2C2 *Propeller 2 Cardboard Computer* TouchScreenComputer
cheezus
Posts: 298
I thought I'd share the project I've been working on for quite some time. There's still a long way to go but I hope you guys enjoy a sneak peak at the progress.
P2ES
FLASH - NAND Memory IC 8Gb (512M x 16) Parallel
SRAM - Asynchronous Memory IC 16Mb (1M x 16) Parallel
CPLD - XC2C64A - 64 IO
7" 800x480 TFT LCD Resistive touch module
Parallax PowerPal
I hope @"Peter Jakacki" is okay with how close P2C2TSC or P2CCTSC is to his awesome P2D2, although the plan has always been to incorporate the p2d2 as the carrier. One step at a time and this is an early prototype. I mean c'mon, it's a Cardboard Computer!!
As far as progress, it's still very slow. There's a lot of dependencies to fix and test. I have a debugging font that works and I'm testing those debugging tools. I'm currently trying to get Ymodem working so I can test things a lot easier.
Pics for now, full writeup coming later. Enjoy!
Here's the "p2 version "offical" development thread" with more info for now https://forums.parallax.com/discussion/comment/1456684/#Comment_1456684
P2ES
FLASH - NAND Memory IC 8Gb (512M x 16) Parallel
SRAM - Asynchronous Memory IC 16Mb (1M x 16) Parallel
CPLD - XC2C64A - 64 IO
7" 800x480 TFT LCD Resistive touch module
Parallax PowerPal
I hope @"Peter Jakacki" is okay with how close P2C2TSC or P2CCTSC is to his awesome P2D2, although the plan has always been to incorporate the p2d2 as the carrier. One step at a time and this is an early prototype. I mean c'mon, it's a Cardboard Computer!!
As far as progress, it's still very slow. There's a lot of dependencies to fix and test. I have a debugging font that works and I'm testing those debugging tools. I'm currently trying to get Ymodem working so I can test things a lot easier.
Pics for now, full writeup coming later. Enjoy!
Here's the "p2 version "offical" development thread" with more info for now https://forums.parallax.com/discussion/comment/1456684/#Comment_1456684
4032 x 2268 - 2M
2268 x 4032 - 3M
4032 x 2268 - 3M
2268 x 4032 - 3M
4032 x 2268 - 3M
4032 x 2268 - 2M
4032 x 2268 - 3M
2268 x 4032 - 2M
Comments
I'm fairly confident in the hardware design and I think the CPLD logic is fairly stable. The CPLD schematic is still ugly but until I've got the FLASH working I can't call it finalized.
Not the best quality pics and I need to upload a video...
Silly question: ever think about putting a few coats of lacquer on the cardboard? Makes it harder and more durable and also changes the “feel” very pleasingly.
Where did you get the display? Got a link? I think need one.
@JRoark I've been thinking about ways to improve the "case" since I built it. I have a design for a case made from MDF drawn (in my head) but I'm leaning towards something metal. Putting some lacquer on it's a great idea. I was considering wrapping with vinyl printed graphics... I think metal is the way to go though.
I've been purchasing the displays from sainsmart.com lately. They can be had a little cheaper on ebay but I've been burned before too. They are Arduino displays and I have a 3.2" and the 7" but they come in 2.8" and 5" as well. The 2.8" and 3.2" are 320 x 240 px and the larger displays are 800 X 480 px.
https://www.sainsmart.com/collections/all-for-arduino/products/7-tft-lcd-for-arduino-due-mega2560-r3
https://www.sainsmart.com/collections/all-for-arduino/products/3-2-tft-lcd-touch-screen-with-sd-slot
@evanh I keep getting excited as I make more progress because it has the potential to be very cool indeed! The P1 based board still gets a lot of use but the memory constraints make programming a bit tough. That and there were no free pins...