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Nrf52840 qfaa

cotty52·Mouse·Documents/nrf-documents/nRF52840-QFAA Reference Layout 1_0/Altium Designer files/nrf52840_qfaa/nrf52840_qfaa.kicad_pcb

Nrf52840 qfaa PCB layout, top view — open source Nordic nRF board by cotty52

About the Nrf52840 qfaa PCB

Nrf52840 qfaa is an open source Nordic nRF PCB design by cotty52, published on GitHub. It is a 2-layer board measuring 16 × 13.5 mm, with 23 components from 20 distinct parts.

Its main chip is the TPS62821DLCR, from the Nordic nRF family. By type, the board carries 16 capacitors, 4 inductors, 2 crystals and 1 IC.

It belongs with the sensors designs in this gallery.

From the project

Custom mouse using PMW3389 sensor and nRF52840 microcontroller

This bootloader can be downloaded from the adafruit/AdafruitnRF52Bootloader github repository: https://github.com/adafruit/AdafruitnRF52Bootloader/releases

To use the bootloader: 1. Plug the nice!nano into your computer. 2. Touch ground and reset together twice within ~0.5 seconds to enter bootloader mode. 3. The nice!nano should appear as a USB drive. 4. Drag and drop the update-nicenanobootloader-0.9.2nosd.uf2` file onto the nice!nano USB drive to update the bootloader.

Main components on the Nrf52840 qfaa

TPS62821DLCR

Nrf52840 qfaa bill of materials (BOM)

23 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS62821DLCR
nRF52840-QFAA
U1
1
32MHz
X1
1
32.768kHz
X2
1
470NH
4.7nH
L1
1
2.2nH
L2
1
10µH
L3
1
15nH
L4
1
10UF
12pF
C1
1
4.7UF
12pF
C2
1
0.1UF
1.0pF
C3
1
0.1UF
1.2pF
C4
2
0.1UF
100nF
C5, C8
1
10UF
100nF
C6
1
4.7UF
100nF
C7
1
120PF
N.C.
C10
1
10UF
100pF
C11
1
100nF
C12
2
1.0µF
C13, C14
1
47nF
C15
2
12pF
C16, C17

Nrf52840 qfaa design files

The KiCad project lives in the cotty52/Mouse repository on GitHub; these links point at the commit this page was built from.

Nrf52840 qfaa: common questions

What microcontroller does the Nrf52840 qfaa use?

The Nrf52840 qfaa is built around the TPS62821DLCR, from the Nordic nRF family.

How big is the Nrf52840 qfaa PCB?

The Nrf52840 qfaa measures 16 × 13.5 mm, has 2 copper layers and is 1.69132 mm thick.

How many components are on the Nrf52840 qfaa?

23 components, from 20 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 Nrf52840 qfaa design files?

From the cotty52/Mouse repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Nrf52840 qfaa design in my own project?

The repository has no license, so all rights stay with cotty52. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Nrf52840 qfaa 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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