by HeyPCBgithub.com/HeyPCB/senswear-kicad
Sens Wear's open-source smart ring: a 4-layer flex hub that bends into the ring, plug-in sensor boards and a debug probe. Designed by Sens Wear in Altium (github.com/Sens-Wear/hardware, MIT); converted to KiCad 10 by HeyPCB. Sens Wear's files remain the authoritative source.
In the order the project lists them. Each opens its own page, with its design files.
1 · Ring main board
Designed by Sens Wear (MIT). A 52.5 x 8.5 mm, 0.2 mm 4-layer flex board that wraps into a ring: nRF54L15 Bluetooth LE SoC, BHI360 IMU, BQ25180 charger, BQ27427 fuel gauge, 32 Mb SPI memory, RGB LED and an FFC socket for a sensor board. KiCad conversion of Sens Wear's Altium design.
2 · Heart-rate sensor board
Designed by Sens Wear (MIT). MAX30101 pulse-oximetry and heart-rate sensor on a 21.8 mm flex board that plugs into the SensWear hub by its FFC tail. KiCad conversion of Sens Wear's Altium design.
3 · Skin-temperature sensor board
Designed by Sens Wear (MIT). MAX30208 skin-temperature sensor on a 13 mm flex board that plugs into the SensWear hub by its FFC tail. KiCad conversion of Sens Wear's Altium design.
4 · Haptic feedback board
Designed by Sens Wear (MIT). DRV2605L haptic driver and a vibration motor on a 16.6 mm flex board that plugs into the SensWear hub by its FFC tail. KiCad conversion of Sens Wear's Altium design.
5 · Touch input board
Designed by Sens Wear (MIT). MTCH6102 capacitive touch controller and a 51.6 mm chevron touch strip on flex, plugging into the SensWear hub by its FFC tail. KiCad conversion of Sens Wear's Altium design.
6 · Programmer and debug board (V1R2)
Designed by Sens Wear (MIT). RP2354A-based SWD and UART debug probe with USB-C and an FFC socket for the SensWear hub, on a 25 x 25 mm 4-layer board. KiCad conversion of Sens Wear's Altium design.
7 · Earlier debug board (V1R1)
Designed by Sens Wear (MIT). The first SensWear debug board: FT232RL USB-to-UART, two 20-pin SWD headers and USB-C, on a 40 x 35 mm board. KiCad conversion of Sens Wear's Altium design.