HardLabs

Sensus hardware

klausen-tech·sensus-hardware

Sensus hardware PCB layout, top view — open source Nordic nRF board by klausen-tech

About the Sensus hardware PCB

Sensus hardware is an open source Nordic nRF PCB design by klausen-tech, published on GitHub. It is a 4-layer board measuring 36.5 × 35 mm, with 61 components from 38 distinct parts.

Its main chip is the NRF52832-QFAA, from the Nordic nRF family. Other key parts include the OPT3001, SHTC3, XC6206PXXXMR, MAX40203AUK+T and CP2102N-AXX-XQFN20. By type, the board carries 25 capacitors, 14 resistors, 8 ICs, 4 connectors, 3 inductors and 2 crystals.

From the project

PlantBuddy is a KiCad-based electronics project for a compact, battery-powered sensor board. This repository contains the schematic, PCB layout, custom libraries, and fabrication outputs.

PlantBuddy is a KiCad-based electronics project for a compact, battery-powered sensor board. This repository contains the schematic, PCB layout, custom libraries, and fabrication outputs.

This uses a containerized KiKit workflow and writes outputs to output/.

Main components on the Sensus hardware

OPT3001SHTC3XC6206PXXXMRMAX40203AUK+TNRF52832-QFAACP2102N-AXX-XQFN20

Sensus hardware bill of materials (BOM)

61 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
OPT3001
U1
1
SHTC3
U2
1
XC6206PXXXMR
XC6206PxxxMR
U3
3
MAX40203AUK+T
U4, U5, U6
1
NRF52832-QFAA
nRF52832-QFAA
U102
1
CP2102N-AXX-XQFN20
CP2102N-Axx-xQFN20
U106
1
32KHZ
32kHz
Y1
1
32MHZ
32MHz
Y101
1
TYPE-C-31-M-12
USB_C_Receptacle_USB2.0
J1
1
C160404
QWIIC
J2
1
C88374
Conn_Coaxial
J3
1
Debug
J102
1
Antenna_IFA
AE101
1
C70377
Li+
BT1
1
SKRKAEE020
SW_Push
SW1
1
SMF05CT1G
D101
1
C404280
LED_RGBA
D102
1
3.9NH
3.9nH
L101
1
10UH
10uH
L102
1
15NH
15nH
L103
Show 18 more
QtyPartRefs
7
CC0603KRX7R9BB104
100nF
C1, C2, C109, C110, C114, C117, C118
4
CL10A475KO8NNNC
4.7u
C3, C101, C112, C119
1
CL10A475KO8NNNC
1uF
C4
2
CL10A475KO8NNNC
22uF
C5, C9
1
CL10A475KO8NNNC
100nF
C6
4
15PF
15pF
C7, C8, C105, C106
2
N/P
C10, C116
1
CL10A475KO8NNNC
N/P
C11
1
0.8PF
0.8pF
C108
1
CC0603KRX7R9BB104
1uF
C111
1
100PF
100pF
C113
4
0603WAF5101T5E
5k1
R1, R2, R5, R6
3
22K
22k
R3, R4, R104
1
0603WAF2004T5E
1M
R101
1
330R
R102
2
0603WAF5101T5E
10k
R105, R108
1
47K
47k
R106
2
120R
R107, R109

Sensus hardware design files

The KiCad project lives in the klausen-tech/sensus-hardware repository on GitHub; these links point at the commit this page was built from.

Sensus hardware: common questions

What microcontroller does the Sensus hardware use?

The Sensus hardware is built around the NRF52832-QFAA, from the Nordic nRF family.

How big is the Sensus hardware PCB?

The Sensus hardware measures 36.5 × 35 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Sensus hardware?

61 components, from 38 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 Sensus hardware design files?

From the klausen-tech/sensus-hardware 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 Sensus hardware design in my own project?

The repository has no license, so all rights stay with klausen-tech. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Sensus hardware 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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