2 layers25.5 × 26.5 mm

F3f4 bridge
70p4z/samsung-f3-f4-usb-adapter
An open hardware + firmware USB to F3/F4 bus adapter. To be able to converse with the Control Layer of Samsung EHS systems
30 parts6
Open-source boards designed in KiCad by 70p4z on GitHub, from 2 repositories. A board’s address here is its repository’s there.

70p4z/samsung-f3-f4-usb-adapter
An open hardware + firmware USB to F3/F4 bus adapter. To be able to converse with the Control Layer of Samsung EHS systems

70p4z/tparse
A minimalistic C library to parse text in microcontroller without memory allocation.