“A Raspberry-pi handheld platform with a physical keyboard, Display and Expansion header for custom boards (Like Arduino Shield).
First take a look at this in 3D usingAutoDesk Fusion 360 Online.
Now see some key features.
mutantC v1.4It is fully open-source hardware. So you can hack it as you wish. You can make your expansion-card like gps, Radio etc and attach them. You can use any Raspberry-pi form factor like Asus Tinker Board S / PINE H64 Model B/ Banana Pi BPI-M4B etc. You can use Pi zero to 3. You can acess all the ports of the pi and the back part is attached with 4 screw. It can hold a 4” or 3.5” touch screen. Also have a physical keyboard attached via USB. It don’t need any custom image of Raspbian. You can use vanilla Raspbian and install the LCD driver, that’s it. So little parts needed to make one. See the parts_list . You can use C Suite Application suite made more touch based device in this. This apps are suitable for small screens. See the C Suite .So make yours and help us to make a Community around it.”