HardLabs

Locus

Nieko27·Frame-Workshop·KICAD Projects/Primis_Locus/Locus.kicad_pcb

Locus PCB layout, top view — open source Nordic nRF board by Nieko27
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About the Locus PCB

Locus is an open source Nordic nRF PCB design by Nieko27, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 40 × 40 mm, with 50 components from 32 distinct parts.

Its main chip is the NRF52833_QDXX, from the Nordic nRF family. Other key parts include the LSM6DSV16XTR, QMC6309 and MCP73831T-2ATI_OT. By type, the board carries 22 capacitors, 12 resistors, 5 inductors, 4 ICs, 2 crystals and 2 connectors.

From the project

A repo for all things steam frame hardware.

Locus, from the project README
From the project README

Main components on the Locus

NRF52833_QDXXLSM6DSV16XTRQMC6309MCP73831T-2ATI_OT

Locus bill of materials (BOM)

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

QtyPartRefs
1
NRF52833_QDXX
nRF52833_QDxx
U1
1
LSM6DSV16XTR
U2
1
QMC6309
U3
1
MCP73831T-2ATI_OT
Microchip Tech
U5
1
32.768KHZ
32.768kHz
Y1
1
32MHZ
32MHz
Y2
1
S2B-PH-SM4-TB_LF_SN
JST
J2
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J4
1
SW_DPST_X2
SW_DPST_x2
SW1
1
LED
D1
1
XL-1615RGBC-RF
XINGLIGHT
D2
1
4.7NH
4.7nH
L1
1
2.2NH
2.2nH
L2
2
N.C.
L3, L5
1
2450AT18D0100001E
Johanson Dielectrics
L4
5
100NF
100nF
C1, C8, C10, C12, C13
6
4.7UF
4.7uF
C2, C7, C9, C18, C20, C21
4
12PF
12pF
C3, C4, C14, C16
1
0.8PF
0.8pF
C5
1
1.0PF
1.0pF
C6
Show 12 more
QtyPartRefs
2
1.0UF
1.0uF
C11, C29
1
2.2UF
2.2uF
C17
1
N.C.
C30
1
100PF
100pF
C31
3
4.7K
4.7k
R1, R2, R4
2
5.1K
5.1k
R7, R9
1
10K
10k
R10
1
5.6K
5.6k
R11
1
1k
R12
1
470R
470r
R13
2
100R
100r
R14, R15
1
0r
R16

Locus design files

The KiCad project lives in the Nieko27/Frame-Workshop repository on GitHub; these links point at the commit this page was built from.

Locus: common questions

What microcontroller does the Locus use?

The Locus is built around the NRF52833_QDXX, from the Nordic nRF family.

How big is the Locus PCB?

The Locus measures 40 × 40 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Locus?

50 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 Locus design files?

From the Nieko27/Frame-Workshop 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 Locus design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Nieko27 chose for the repository.

Can I test firmware for the Locus 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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