4 layers117 × 77 mm
ProdDeck
arsovskiteodor/A.ProdDeck
Open-hardware macro pad (WIP): custom KiCad PCB with keys, encoders and a fader, plus firmware and a desktop configurator
69 parts
4 layers50 × 50 mm
Watch wearable
TENNLab-UTK/NWRISTCode and KiCAD PCB design for the NWRIST: Neuromorphic Wearable for Real-Time Intelligent Sensing Technology paper
- Size
- 50 × 50 mm
- Copper layers
- 4
- Thickness
- 1.53 mm
- Parts
- 79
- Nets
- 85
- Pads
- 324
- Tracks, vias
- 690, 305
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 27 Apr 2026
- Updated
- 27 Apr 2026
Overview
Watch wearable is an open-source printed circuit board by TENNLab-UTK, from the TENNLab-UTK/NWRIST repository on GitHub. It is a 4-layer board of 50 × 50 mm with 79 parts on 85 nets, routed with 690 tracks and 305 vias.
It is built around the STM32WB55CEU6, DLF162500LT-5028A1 and LTC3407EDD-3#TRPBF, with the BQ24012DRC, ICM-20948 and USBLC6-2SC6 among its other parts. Its parts include 34 capacitors, 12 resistors, 7 ICs, 5 inductors and 4 connectors. It belongs with the wearables boards and the STM32 boards of this library.
Main components
12
STM32WB55CEU6
UFQFPN-48(7x7)UFQFPN-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
DLF162500LT-5028A1
SMD-4P,1.6x0.8mm-40℃~+85℃ 0.33dB 2.4GHz~2.5GHz 49.2dB 50Ω Low Pass SMD-4P,1.6x0.8mm RF Filters ROHSTDKRF Filters
LTC3407EDD-3#TRPBF
DFN-10-EP(3x3)-40℃~+85℃@(TA) 1.8V、3.3V 2 2.25MHz 3.3V~5.5V 800mA Buck Buck Built-in Fixed Yes DFN-10-EP(3x3) DC-DC Converters ROHSAnalog DevicesDC-DC Converters
BQ24012DRC
VSON-10-EP(3x3)-40℃~+125℃ 1 1A 3V~16.5V 4.2V 5uA Charging IC Lithium Battery Support Support VSON-10-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
ICM-20948
QFN-24(3x3)-40℃~+85℃ 0.5KB 1.71V~3.6V 16bit 8uA Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24(3x3) Accelerometers ROHSTDK InvenSenseAccelerometers
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
04023C104KAT2A
0402100nF 25V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSKyocera AVXMultilayer Ceramic Capacitors MLCC - SMD/SMT
CC0603KRX7R7BB105
060316V 1uF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
JMK212BJ106MD-T
080510uF 6.3V X5R ±20% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSTaiyo YudenMultilayer Ceramic Capacitors MLCC - SMD/SMT
CRCW04025K10FKEDC
0402-55℃~+155℃ 5.1kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface MountLPO3310-222MLC
SMD- New Arrivals ROHSCoilcraftUncategorised
RC0402FR-07100KL
UncategorisedUnknown maker
README
README.mdNWRIST: Neuromorphic Wearable for Real-Time Intelligent Sensing Technology
Points of contact:
- Bryson Gullett (bgullet1@vols.utk.edu)
- Karan P. Patel (kpatel68@vols.utk.edu)
Repository Organization
-
PCB: The
pcb/directory contains all of the necessary project files for the KiCAD PCB design. If you wish to edit or extend the PCB design, download the KiCAD software and open the project file in this directory. If you wish to have the PCB manufactured, consider a service such as PCBWay; follow instructions and tutorials for your given PCB manufacturer as needed. -
Firmware: The
firmware/directory contains shared firmware files to build the apps in theapp/directory. Follow the Zephyr Tutorial steps to build your Zephyr RTOS environment. -
Apps: The
apps/directory contains all the source code and Zephyr dependencies to build the various apps. You can follow a similar setup to design your custom applications. You can build and flash the binaries onto your board using the steps provided in Zephyr Tutorial.
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C6, C7, C8, C10, C16, C19, C20, C21, C22, C23, C24, C25 |
| 6 | 1uF | Capacitor_SMD:C_0603_1608Metric | C13, C26, C28, C31, C33, C34 |
| 6 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3, FID4, FID5, FID6 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C29, C30, C32 |
| 3 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C1, C5, C14 |
| 3 | 5.1kOhm | Resistor_SMD:R_0402_1005Metric | R4, R7, R8 |
| 2 | 10pF | Capacitor_SMD:C_0402_1005Metric | C12, C15 |
| 2 | 2.2uH | watch-wearable-library:LPO3310 | L4, L5 |
| 2 | 324Ohm | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 1 | 0.3pF | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 0.47uF | Capacitor_SMD:C_0402_1005Metric | C27 |
| 1 | 0.8pF | Capacitor_SMD:C_0402_1005Metric | C17 |
| 1 | 100kOhm | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 10kOhm | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 10nF | Capacitor_SMD:C_0402_1005Metric | C11 |
| 1 | 10nH | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 10uH | Inductor_SMD:L_0805_2012Metric | L2 |
| 1 | 120kOhm | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 2.7nH | Inductor_SMD:L_0402_1005Metric | L3 |
| 1 | 220Ohm | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 2kOhm | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 300kOhm | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 32.768kHz | watch-wearable-library:NX2012SA | Y1 |
| 1 | 32MHz | watch-wearable-library:NX2016SA_NDK | Y2 |
| 1 | 750Ohm | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | Antenna | watch-wearable-library:AMCA31-2R450G-S1F-T3 | AE1 |
| 1 | BQ24012 | Package_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.65x2.4mm | U6 |
| 1 | Conn_01x02_Pin | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J4 |
| 1 | Conn_01x06_Socket | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J1 |
| 1 | Conn_01x10_Socket | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | DLF162500LT-5028A1 | watch-wearable-library:DLF-4_1P6X0P8 | U2 |
| 1 | ICM-20948 | Sensor_Motion:InvenSense_QFN-24_3x3mm_P0.4mm | U3 |
| 1 | LED_ARGB | watch-wearable-library:SON4_APTF1616LSEEZGKQBKC_KNB | D1 |
| 1 | LOGO | LOGO | G*** |
| 1 | LTC3407EDD-3-TRPBF | watch-wearable-library:DFN-10_DD_LIT-L | U7 |
| 1 | ST2378ETTR | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | STM32WB55CEU6 | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H13mm | SW1 |
| 1 | SW_SPDT | watch-wearable-library:SS12D07_CNK | SW2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J3 |
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Questions
How big is the Watch wearable PCB?
It measures 50 × 50 mm and has 4 copper layers, 1.53 mm thick.
What parts does the Watch wearable use?
79 parts, built around the STM32WB55CEU6, DLF162500LT-5028A1, LTC3407EDD-3#TRPBF and BQ24012DRC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Watch wearable KiCad files?
From the TENNLab-UTK/NWRIST repository on GitHub, at the commit this page was made from: the board is pcb/watch-wearable.kicad_pcb and its schematic pcb/imu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Watch wearable design in my own project?
Its repository states no licence, so its author keeps all rights: ask TENNLab-UTK before reusing the design.