HardLabs

Siplab wristband

bastlfun·sparse-pose-benchmark·src/tracking/uwb_wearables/hardware/siplab_wristband/siplab_wristband.kicad_pcb

Siplab wristband PCB layout, top view — open source Nordic nRF board by bastlfun

About the Siplab wristband PCB

Siplab wristband is an open source Nordic nRF PCB design by bastlfun, published on GitHub under the MIT license. It is a 4-layer board measuring 35 × 30.4 mm, with 66 components from 32 distinct parts.

Its main chip is the BMD-340-A-R, from the Nordic nRF family. Other key parts include the NPM1100-QDAB-R7, LSM6DSOXTR, LIS3MDLTR and BMP384. By type, the board carries 28 resistors, 17 capacitors, 7 connectors, 5 ICs, 4 diodes and 3 switches.

It belongs with the sensors and iot & wireless designs in this gallery.

From the project

This repo contains the Sparse Pose Benchmark website and evaluation backend, as well as all resources for the creation of the Hidden Dataset using commodity sensors.

This repository contains hardware, firmware and data recording resources for IMU-UWB wearables.

Siplab wristband, from the project README
From the project README

Main components on the Siplab wristband

NPM1100-QDAB-R7LSM6DSOXTRLIS3MDLTRBMP384BMD-340-A-R

Siplab wristband bill of materials (BOM)

66 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NPM1100-QDAB-R7
U1
1
LSM6DSOXTR
LSM6DSOX
STMicroelectronics
U2
1
LIS3MDLTR
LIS3MDL
U3
1
BMP384
BMP388
U4
1
BMD-340-A-R
U5
1
CM8V-T1A-32.768KHZ-9PF-20PPM-TA-QC
32.768kHz
Y1
1
BAT
J1
1
541020204
USB_C_Receptacle_USB2.0
J2
1
SM06B-GHS-TB
PROG
J3
2
541020204
J4, J7
2
538850208
J5, J6
1
EVQ-P7A01P
BTN
SW1
1
EVQ-P7A01P
RST
SW2
1
PCM12SMTR
PWR
SW3
1
XL-1005SURC
RED
D1
1
XL-1005UYC
YELLOW
D2
1
19-219/GHC-YR2T1B5Y/3T
GREEN
D3
1
EAST1616RGBB2
LED
D4
1
DFE201612E-2R2M=P2
2.2uH
L1
1
CS1608X7R225M100NRB
2.2uF
C1
Show 12 more
QtyPartRefs
1
CL05A105KP5NNNC
1uF
C2
3
GRM188Z71A106KA73D
10uF
C3, C4, C5
9
GRM155R71H104KE14D
100nF
C6, C7, C8, C9, C10, C11, C12, C16 +1
3
0603B475K100NT
4.7uF
C13, C14, C15
1
RC0402FR-131K5L
1.5k
R1
2
RC0402JR-0710KL
10k
R2, R21
15
RC0402JR-070RL
0R
R3, R4, R5, R6, R7, R9, R10, R15 +7
3
RC0402FR-074K7L
4.7k
R8, R13, R14
2
RC0402JR-07100KL
100k
R11, R12
1
RC0402FR-071KL
1k
R26
2
RC0402FR-073KL
3k
R27, R28
2
RC0402FR-131K5L
5.1k
R34, R35

Siplab wristband design files

The KiCad project lives in the bastlfun/sparse-pose-benchmark repository on GitHub; these links point at the commit this page was built from.

Siplab wristband: common questions

What microcontroller does the Siplab wristband use?

The Siplab wristband is built around the BMD-340-A-R, from the Nordic nRF family.

How big is the Siplab wristband PCB?

The Siplab wristband measures 35 × 30.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Siplab wristband?

66 components, from 32 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Siplab wristband design files?

From the bastlfun/sparse-pose-benchmark repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Siplab wristband design in my own project?

Yes, under the terms of its MIT license, which bastlfun chose for the repository.

Can I test firmware for the Siplab wristband 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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