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VolksEEG

VolksEEG·VolksEEG·hardware/KiCAD/VolksEEG/VolksEEG.kicad_pcb

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

VolksEEG is an open source Nordic nRF PCB design by VolksEEG, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 121.2 × 165.5 mm, with 143 components from 33 distinct parts.

Its main chip is the nRF52840-Feather-Sense-Board, from the Nordic nRF family. Other key parts include the ADUM240E1BRIZ-RL, MEJ1S0305SC, LP3990MF-3.3, ADP7182ACPZ-2.5-R7 and TPS78425Q. By type, the board carries 55 capacitors, 36 resistors, 31 test points, 9 ICs, 5 connectors and 4 inductors.

From the project

Open Source EEG project

The VolksEEG project is creating an open-source electroencephalogram (EEG) machine, fully-functional for clinical or research use.*

The final device will obtain clearance by the USA FDA, and CE marking (the equivalent of FDA clearance in the EU).*

Currently, no other open-source electronic medical device (that we know of) has full regulatory clearance*

All hardware and software designs will be freely available (free as in speech and as in beer).*

VolksEEG, from the project README
From the project README

Main components on the VolksEEG

nRF52840-Feather-Sense-BoardADUM240E1BRIZ-RLMEJ1S0305SCLP3990MF-3.3ADP7182ACPZ-2.5-R7TPS78425QLM2660MXADS1299IPAG

VolksEEG bill of materials (BOM)

143 components, 33 distinct parts.

QtyPartRefs
1
nRF52840-Feather-Sense-Board
U1
2
ADUM240E1BRIZ-RL
U2, U3
1
MEJ1S0305SC
U4
1
LP3990MF-3.3
U5
1
ADP7182ACPZ-2.5-R7
U6
1
TPS78425Q
U7
1
LM2660MX
U8
1
ADS1299IPAG
U9
1
Conn_01x03
J1
1
QWIIC
J2
1
693061010911
J3
1
Conn_01x10
J4
1
Conn_02x04_Counter_Clockwise
J5
28
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +20
3
TestPoint
TP24, TP26, TP31
1
Red
D1
1
Green
D2
1
Yellow
D3
4
3.3u
L1, L2, L3, L4
17
100n
C1, C2, C3, C4, C5, C6, C27, C31 +9
Show 13 more
QtyPartRefs
8
33n
C7, C8, C9, C11, C12, C13, C14, C15
1
1.5n
C10
6
2.2u
C16, C17, C18, C19, C20, C21
10
10u
C22, C23, C24, C25, C26, C28, C30, C39 +2
12
1u
C29, C33, C34, C36, C37, C40, C45, C46 +4
1
100u
C55
10
0R
R1, R2, R4, R5, R6, R7, R14, R15 +2
3
1K
R3, R18, R19
5
4K7
R8, R9, R10, R11, R12
1
2R2
R17
1
1M
R20
10
4.99k
R21, R22, R23, R24, R25, R26, R27, R28 +2
6
10K
R32, R33, R34, R35, R36, R37

VolksEEG design files

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

VolksEEG: common questions

What microcontroller does the VolksEEG use?

The VolksEEG is built around the nRF52840-Feather-Sense-Board, from the Nordic nRF family.

How big is the VolksEEG PCB?

The VolksEEG measures 121.2 × 165.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the VolksEEG?

143 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the VolksEEG design files?

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

Can I use the VolksEEG design in my own project?

Yes, under the terms of its GPL-3.0 license, which VolksEEG chose for the repository.

Can I test firmware for the VolksEEG 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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