I've been working on this design for a while and am getting ready to shoot boards.
The design uses a Propeller Platform short board for the micro. It is designed for a specific Propeller board, but could easily accept any Propeller Platform short board with a compatible assembly. I may create boards which would include other micros at some point.
Shown is a package with LCD (262K colors and separate Graphics RAM) in a modified Bud Industries HB3430 enclosure. Depending on interest I will pay to have BUD industries modify the enclosure for a finished look.
The LCD could be replaced with some other Propeller Platform module: that is, you don't have to have an LCD, it could be another board. The LCD with touch-screen is available from Mouser/Digikey. There are other LCDs which could be used with a special Propeller Platform module.
The motherboard has components listed in the Enclosure Stackup as well as footprints for 2 quad-SPI Flash chips (fast access and non-volatile storage). I expect that the Flash chips could be programmed with code or data taken from the SD card and 262K color mode on LCD. Catalina, PropellerJVM, or other language such as XBASIC (when ready) that can fetch/execute code from external memory would benefit from speedup provided by this temporary storage. An optional SRAM module can be used with 65K color mode on the LCD (number of colors available depends on the number of propeller pins in use).
The motherboard has a switch that lets you select USB or AA battery power. A jumper on the motherboard will allow using power provided by a Propeller Platform board if necessary.
There is room for a small 4 button membrane switch below the LCD.
I'm hoping to have kits for this and SpinSocket32 modules available for UPEW.
If you are interested in this project, please comment. If there is no interest, it will go on the shelf.
I'll have a prototype to show at UPEW, but it would also be useful to know how many kits i should make. The assembled boards will be fairly cheap as is the enclosure - I have some Propeller Platform boards that fit in the stackup and they will be available for you to add your hardware.
Motherboard module shows outline of enclosure and expansion modules:
Optional Flash/EEPROM module 1.2" x 0.8"
Optional IO Expander module 1.2" x 1.3". Also a compatible connector for cables is available.
Optional SRAM/Flash/EEPROM module 1.2" x 1.7":
Here is a picture of the cable connector shell for expansion ports. I may be able to squeeze a Flash cartridge into one ... we'll see.
Also attached but not shown in line is picture of a 1.2" x 1.3" SRAM module.