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Nrf52840-promicro

sasodoma·nrf52840-promicro·KiCad/promicro.kicad_pcb

Nrf52840-promicro PCB layout, top view — open source Nordic nRF board by sasodoma

About the Nrf52840-promicro PCB

Nrf52840-promicro is an open source Nordic nRF PCB design by sasodoma, published on GitHub. It is a 2-layer board measuring 17.8 × 33 mm, with 55 components from 38 distinct parts.

Its main chip is the nRF52840, from the Nordic nRF family. Other key parts include the ME6217, TP4054 and USBLC6-2P6. By type, the board carries 24 capacitors, 13 resistors, 4 ICs, 4 connectors, 4 inductors and 3 diodes.

It belongs with the power & battery designs in this gallery.

From the project

Reverse engineering the nRF52840 ProMicro (SuperMini) board

The nRF52840 ProMicro board is also known as the SuperMini board. It's a clone of the nice!nano board with a mix of v1 and v2 design features. The schematic is available online, albeit with a small mistake, but I was unable to find board design files. The aim of this repository is to reverse engineer the board design and determine which component is which so that I can desolder them from the board and reuse them on my custom PCB.

Nrf52840-promicro, from the project README
From the project README

Main components on the Nrf52840-promicro

nRF52840ME6217TP4054USBLC6-2P6

Nrf52840-promicro bill of materials (BOM)

55 components, 38 distinct parts.

QtyPartRefs
1
nRF52840
U1
1
ME6217
U2
1
TP4054
U3
1
USBLC6-2P6
U4
1
AO3401A
Q1
1
32 MHz
Y1
1
32.768kHz
Y2
1
918-418K2024S40000
J1
2
Conn_01x13_Pin
J2, J3
1
Conn_01x03_Pin
J4
1
BAT60B
D1
2
LED
D2, D3
1
10u
L1
1
15n
L2
1
3u3
L3
1
4n7
L4
3
10u
C1, C2, C4
5
100n
C3, C9, C19, C20, C21
2
15p
C5, C6
2
12p
C7, C8
Show 18 more
QtyPartRefs
1
100p
C10
1
47n
C11
1
1u
C12
1
820p
C13
4
4u7
C14, C22, C23, C24
1
0p8
C15
1
0p5
C16
1
NC
C17
1
1u
C18
2
5k1
R1, R2
1
100k
R3
1
10M
R4
1
10k
R5
1
2k
R6
1
0R
R7
1
1k
R8
3
R
R9, R10, R11
2
27R
R12, R13

Nrf52840-promicro design files

The KiCad project lives in the sasodoma/nrf52840-promicro repository on GitHub; these links point at the commit this page was built from.

Nrf52840-promicro: common questions

What microcontroller does the Nrf52840-promicro use?

The Nrf52840-promicro is built around the nRF52840, from the Nordic nRF family.

How big is the Nrf52840-promicro PCB?

The Nrf52840-promicro measures 17.8 × 33 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nrf52840-promicro?

55 components, from 38 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nrf52840-promicro design files?

From the sasodoma/nrf52840-promicro repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Nrf52840-promicro design in my own project?

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

Can I test firmware for the Nrf52840-promicro 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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