HardLabs

Soilsense

fredriknk·ssense·CAD/Soilsense/Soilsense.kicad_pcb

Soilsense PCB layout, top view — open source Nordic nRF board by fredriknk

About the Soilsense PCB

Soilsense is an open source Nordic nRF PCB design by fredriknk, published on GitHub under the MIT license. It is a 4-layer board measuring 90 × 21 mm, with 62 components from 38 distinct parts.

Its main chip is the nRF52833_QDAA, from the Nordic nRF family. Other key parts include the SHTC3. By type, the board carries 22 capacitors, 12 resistors, 7 inductors, 6 diodes, 3 transistors and 3 crystals.

Main components on the Soilsense

SHTC3nRF52833_QDAA

Soilsense bill of materials (BOM)

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

QtyPartRefs
1
SHTC3
U1
1
nRF52833_QDAA
nRF52833_QDxx
U2
1
MMBT3906-7-F
MMBT3906
Q1
1
ALS-PT19-315C/L177/TR8
Q_Photo_NPN
Q2
1
IRLML6401
Q3
1
KC3225K75.0000C1GE00
X1
1
XRCGB32M000F2P01R0
32MHz
Y1
1
CM8V-T1A-32.768KHZ-9PF-20PPM-TA-QC
32.768kHz
Y2
1
JLINK
J1
1
2460
Keystone 2460
BT1
3
9774025360R
H1, H2, H3
1
B3U-1000P-B
B3U-1000P
RST1
1
B3U-1000P-B
B3U-1000P
SW1
3
CDSU101A
D1, D2, D4
1
LG L29K-G2J1-24-Z
LED
D3
2
EDZVT2R5.1B
Zener Prot 5V
D5, D6
1
10uH
L1
1
MLG1005S15NHT000
15nH
L2
1
SDR0604-4R7ML
4.7uH
L3
1
LQW15AN2N2C80D
2.2nH
L4
Show 18 more
QtyPartRefs
1
LQW15AN4N7C80D
4.7nH
L5
2
NC
L6, L7
3
1nF
C1, C4, C10
5
100nF
C2, C3, C9, C13, C16
4
12pF
C5, C6, C19, C20
1
47nF
C7
2
1uF
C8, C12
1
4.7uF
C11
1
100pF
C15
2
NC
C17, C18
1
GJM1555C1H1R2WB01D
1.2pF
C21
1
GJM1555C1H1R0WB01D
1.0pF
C22
1
0R placeholder
C23
6
10k
R1, R5, R6, R8, R11, R12
2
10k
R2, R9
2
1M
R3, R10
1
1k
R4
1
470R
R7

Soilsense design files

The KiCad project lives in the fredriknk/ssense repository on GitHub; these links point at the commit this page was built from.

Soilsense: common questions

What microcontroller does the Soilsense use?

The Soilsense is built around the nRF52833_QDAA, from the Nordic nRF family.

How big is the Soilsense PCB?

The Soilsense measures 90 × 21 mm, has 4 copper layers and is 1.59 mm thick.

How many components are on the Soilsense?

62 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 Soilsense design files?

From the fredriknk/ssense 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 Soilsense design in my own project?

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

Can I test firmware for the Soilsense 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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