SenseMate
About the SenseMate PCB
SenseMate is an open source Nordic nRF PCB design by smartuni, published on GitHub. It is a 4-layer board measuring 32.8 × 62.1 mm, with 20 components from 17 distinct parts.
Its main chip is the XIAO-nRF52840-Plus-SMD, from the Nordic nRF family. Other key parts include the LoRa WAN. By type, the board carries 7 connectors, 3 resistors, 2 ICs, 2 transistors, 2 switches and 1 module.
From the project
This is the SenseMate hardware directory of the hardware directory.
This is the SenseMate hardware directory of the hardware directory.
The SenseMate directory includes modules to control the peripherals listed below.
- Sound module - Display module - Vibration Module
Additionally to the Nordic nRF52840 board, the following peripherals are required for the full utilization of the project:
- Power Switch - Battery - Thumbwheel - Navigation - Display - Soundbuzzer - Vibrationmotor
Main components on the SenseMate
SenseMate bill of materials (BOM)
20 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | XIAO-nRF52840-Plus-SMD | XIAO-nRF52840-Plus-SMD | U1 |
| 1 | LoRa WAN | HOPERF_RFM9XW_SMD | U2 |
| 1 | Motor_DC | PinHeader_1x02_P2.54mm_Vertical | M1 |
| 2 | SS8050 | SOT-23 | Q3, Q4 |
| 1 | Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_01x12_Pin | Castellated_1x12_2.00mm | J2 |
| 1 | Conn_Coaxial | U.FL_Molex_MCRF_73412-0110_Vertical | J3 |
| 1 | Conn_01x06_Pin | Castellated_1x6_2.00mm | J4 |
| 1 | Conn_01x06_Pin | PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | Conn_01x02_Pin | Castellated_1x2_2.00mm | J6 |
| 1 | Conn_01x04_Pin | Castellated_1x4_2.00mm | J7 |
| 1 | Battery | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1 |
| 1 | COM-08184 | ThumbWheel | S1 |
| 1 | SW_DPDT_x2 | OS102011MA1QN1 | SW5 |
| 1 | CRYSTALH | PS1240P02BT | XTAL1 |
| 1 | 1N4148 | D_SOD-323 | D1 |
| 3 | R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3 |
SenseMate design files
The KiCad project lives in the smartuni/riot-po-2026 repository on GitHub; these links point at the commit this page was built from.
SenseMate: common questions
What microcontroller does the SenseMate use?
The SenseMate is built around the XIAO-nRF52840-Plus-SMD, from the Nordic nRF family.
How big is the SenseMate PCB?
The SenseMate measures 32.8 × 62.1 mm, has 4 copper layers and is 1.600198 mm thick.
How many components are on the SenseMate?
20 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the SenseMate design files?
From the smartuni/riot-po-2026 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the SenseMate design in my own project?
The repository has no license, so all rights stay with smartuni. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the SenseMate without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.
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