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NRF Moisture Sensor

alxgmpr·moisture-sensor·docs/cost-reduction-2026-09-09/before/nrf-moisture-sensor.kicad_pcb

NRF Moisture Sensor PCB layout, top view — open source board by alxgmpr
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About the NRF Moisture Sensor PCB

NRF Moisture Sensor is an open source PCB design by alxgmpr, published on GitHub. It is a 4-layer board, with 39 components from 22 distinct parts.

Other key parts include the 453-00001R, NPM2100-QEAA-R7, FDC1004DGSR and SHT45-AD1F-R2. By type, the board carries 11 resistors, 10 diodes, 10 capacitors, 4 ICs, 1 transistor and 1 crystal.

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

From the project

Indoor capacitive soil moisture sensor - nRF54L15 + nPM1300 + FDC1004, BTHome v2 over BLE

The user accepted SHT40 as the reference sensor and requested implementation of the cost recommendations. The starting ten-board quote is $33.00 PCB plus $191.37 assembly = $224.37, excluding BLE, shipping and tax. Components are $138.55 and Extended feeder fees are $39.91.

Values, MPNs and LCSC fields are synchronized in the schematic and PCB. The export now labels the procurement column JLCPCB Part # to avoid relying on automatic matching. All 38 JLC-fitted references are present in 20 BOM rows. U1 remains DNP for separate BLE-module fitting. BT1 remains factory assembled.

Main components on the NRF Moisture Sensor

453-00001RNPM2100-QEAA-R7FDC1004DGSRSHT45-AD1F-R2

NRF Moisture Sensor bill of materials (BOM)

39 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
453-00001R
453-00001R BL54L15
Ezurio
U1
1
NPM2100-QEAA-R7
nPM2100-QEAA
Nordic Semiconductor
U2
1
FDC1004DGSR
FDC1004
Texas Instruments
U3
1
SHT45-AD1F-R2
SHT45-AD1F
Sensirion
U4
1
DMG2305UX-7
Diodes Incorporated
Q1
1
CM8V-T1A-32.768KHZ-7PF-20PPM-TA-QC
CM8V-T1A 32.768kHz CL=7pF 20ppm
Micro Crystal
X1
1
CR2032-BS-6
Lian Xin Technology
BT1
3
TPD1E1B04DPYR
Texas Instruments
D1, D2, D3
7
TPD1E01B04DPYR
Texas Instruments
D4, D5, D6, D7, D8, D9, D10
1
DFE201210U-2R2M=P2
2.2uH 20% DFE201210U-2R2M=P2
Murata
L10
1
CL10X106MO8NRNC
10uF/16V X6S
Samsung
C3
1
0402CG3R9C500NT
3.9pF C0G
FH
C13
2
GRM158R60J226ME01D
22uF/6.3V X5R
Murata Electronics
C21, C23
2
0402B102K500NT
1nF 50V X7R
FH
C22, C24
1
CL05A225MQ5NSNC
2.2uF/6.3V X5R
Samsung
C25
1
GRM155Z71A105KE01D
1uF 10V X7R
Murata
C26
2
CL05B104KO5NNNC
100nF 16V X7R
Samsung
C27, C28
1
0402WGF1001TCE
1k 1%
UNI-ROYAL
R1
2
0402WGF4701TCE
4.7k to +3V3
UNI-ROYAL
R22, R23
2
0402WGF5101TCE
5.1k 1%
UNI-ROYAL
R30, R31
Show 2 more
QtyPartRefs
4
0402WGF1000TCE
100 1%
UNI-ROYAL
R32, R33, R34, R35
2
0402WGF4701TCE
4.7kR
UNI-ROYAL
R36, R37

NRF Moisture Sensor design files

The KiCad project lives in the alxgmpr/moisture-sensor repository on GitHub; these links point at the commit this page was built from.

NRF Moisture Sensor: common questions

How big is the NRF Moisture Sensor PCB?

The NRF Moisture Sensor has 4 copper layers and is 1.6 mm thick.

How many components are on the NRF Moisture Sensor?

39 components, from 22 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 NRF Moisture Sensor design files?

From the alxgmpr/moisture-sensor 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 NRF Moisture Sensor design in my own project?

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

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