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Nrf9151-modbus

mathijsmeulendijks·nrf9151-modbus

Nrf9151-modbus PCB layout, top view — open source Nordic nRF board by mathijsmeulendijks

About the Nrf9151-modbus PCB

Nrf9151-modbus is an open source Nordic nRF PCB design by mathijsmeulendijks, published on GitHub. It is a 4-layer board measuring 86 × 56 mm, with 95 components from 47 distinct parts.

Its main chip is the nRF9151-LACA-R, from the Nordic nRF family. Other key parts include the INA180A1IDBVR, MCP6001UT-I_OT, LM66100DCKR, TLV1117-33CDCYR and APX803L-29SA-7. By type, the board carries 40 capacitors, 22 resistors, 12 ICs, 10 diodes, 6 connectors and 1 transistor.

It belongs with the rf & radio designs in this gallery.

From the project

DIN-rail board (3D-printed 2-module housing, TS35): 85-264 VAC (Mean Well IRM-10-5) -> discrete CC supercap charger hold-up (0.1 ohm + INA180A1 + MCP6001 + AO4407A) -> nRF9151 cellular/GNSS with RS-485 + RS-232 + CAN on one RJ45.

DIN-rail board (3D-printed 2-module housing, TS35): 85-264 VAC (Mean Well IRM-10-5) -> discrete CC supercap charger hold-up (0.1 ohm + INA180A1 + MCP6001 + AO4407A) -> nRF9151 cellular/GNSS with RS-485 + RS-232 + CAN on one RJ45.

Native KiCad 10 project. Schematic is the source of truth for circuits; the PCB is fully placed but unrouted (routing is done by the board designer). The PCB stands vertical in a DIN 43880 housing (2 modules, 36 mm wide).

Main components on the Nrf9151-modbus

INA180A1IDBVRMCP6001UT-I_OTLM66100DCKRTLV1117-33CDCYRAPX803L-29SA-7nRF9151-LACA-RTMP117AIDRVRISOW1412MAX3232IPWRMCP2515-I_STSN65HVD230DR

Nrf9151-modbus bill of materials (BOM)

95 components, 47 distinct parts.

QtyPartRefs
1
INA180A1IDBVR
U1
1
MCP6001UT-I_OT
U2
2
LM66100DCKR
U3, U4
1
TLV1117-33CDCYR
U5
1
APX803L-29SA-7
U6
1
nRF9151-LACA-R
U7
1
TMP117AIDRVR
U8
1
ISOW1412
U9
1
MAX3232IPWR
U10
1
MCP2515-I_ST
U11
1
SN65HVD230DR
U12
1
AO4407A
Q1
1
8MHz 20pF
Y1
1
AC_IN
J1
1
LTE
J2
1
GNSS
J3
1
nanoSIM
J4
1
SWD
J5
1
FIELD
J6
1
1A T 250V
F1
Show 27 more
QtyPartRefs
1
IRM-10-5
PS1
1
SMAJ5.0A-13-F
D1
4
PESD5V0F1BL,315
D2, D3, D5, D6
1
USBLC6-2SC6
D4
1
SM712
D7
1
NUP2105L
D8
2
SMBJ15CA
D9, D10
1
BLM18KG300TN1D
FB1
1
100u
C1
1
3.5F 5.5V CHP5R5L355R-TW
C2
6
1u
C3, C12, C13, C23, C28, C30
17
100n
C4, C5, C6, C11, C16, C19, C21, C22 +9
4
10n
C7, C17, C26, C29
2
47u
C8, C14
5
10u
C9, C15, C18, C27, C31
1
22u
C10
1
4.7u
C20
2
33p
C38, C39
1
0.1
R1
1
40.2k
R2
7
10k
R3, R6, R9, R16, R18, R19, R21
1
1k
R4
4
100k
R5, R7, R8, R17
2
4.7k
R10, R11
1
49.9
R12
3
22
R13, R14, R15
2
120
R20, R22

Nrf9151-modbus design files

The KiCad project lives in the mathijsmeulendijks/nrf9151-modbus repository on GitHub; these links point at the commit this page was built from.

Nrf9151-modbus: common questions

What microcontroller does the Nrf9151-modbus use?

The Nrf9151-modbus is built around the nRF9151-LACA-R, from the Nordic nRF family.

How big is the Nrf9151-modbus PCB?

The Nrf9151-modbus measures 86 × 56 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Nrf9151-modbus?

95 components, from 47 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nrf9151-modbus design files?

From the mathijsmeulendijks/nrf9151-modbus repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Nrf9151-modbus design in my own project?

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

Can I test firmware for the Nrf9151-modbus 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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