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F91 jepler

jacobl423·F91_Jepler·Software/macOS_App/F91JeplerEmulator/Resources/Embedded/f91_jepler.kicad_pcb

F91 jepler PCB layout, top view — open source Nordic nRF board by jacobl423

About the F91 jepler PCB

F91 jepler is an open source Nordic nRF PCB design by jacobl423, published on GitHub under the MIT license. It is a 4-layer board measuring 24 × 23.5 mm, with 25 components from 16 distinct parts.

Its main chip is the nRF52840-QIAA, from the Nordic nRF family. Other key parts include the TPS78230DDC. By type, the board carries 20 capacitors, 2 ICs, 2 crystals and 1 inductor.

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

From the project

updated f91 kepler project

This is currently an empty project/placeholder for where the android phone application should be.

Main components on the F91 jepler

nRF52840-QIAATPS78230DDC

F91 jepler bill of materials (BOM)

25 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
nRF52840-QIAA
U1
1
TPS78230DDC
U2
1
32MHz
X1
1
ABS07-32.768KHZ-7-T
X2
1
4.7nH
L1
2
12pF
C1, C2
1
0.8pF
C3
1
0.5pF
C4
4
100nF
C5, C7, C8, C12
1
4.7µF
C6
1
820pF
C9
3
N.C.
C10, C13, C22
1
100pF
C11
2
1.0µF
C14, C15
2
9pF provisional
C17, C18
2
1uF
C30, C31

F91 jepler design files

The KiCad project lives in the jacobl423/F91_Jepler repository on GitHub; these links point at the commit this page was built from.

F91 jepler: common questions

What microcontroller does the F91 jepler use?

The F91 jepler is built around the nRF52840-QIAA, from the Nordic nRF family.

How big is the F91 jepler PCB?

The F91 jepler measures 24 × 23.5 mm, has 4 copper layers and is 0.8 mm thick.

How many components are on the F91 jepler?

25 components, from 16 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 F91 jepler design files?

From the jacobl423/F91_Jepler repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the F91 jepler design in my own project?

Yes, under the terms of its MIT license, which jacobl423 chose for the repository.

Can I test firmware for the F91 jepler 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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