mutantC_V3 is an open source handhled. The schematics and 3D models are free (MIT licenced). The device is based on Raspberry Pi and Arduino boards. It’s an open platform: there is an expansion port for adding additional features like GPS or Radio.
The design of the handheld seems to be inspired by Sony UX. It includes hardware keyboard and sliding display with touchscreen.
You can find more info about this device here:
- MutantC homepage mutantc.gitlab.io.
- YouTube channel of the project.
- MutantC PDA introduction on FOSDEM 2021.