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EEG-CAR-01 carrier board

stepvda·EEG-kit·kicad/EEG-CAR-01_RevB_routed.kicad_pcb

EEG-CAR-01 carrier board layout, top view — open source ESP32 board by stepvda

About the EEG-CAR-01 carrier board

EEG-CAR-01 carrier board is an open source ESP32 PCB design by stepvda, published on GitHub. It is a 4-layer board measuring 150 × 130 mm, with 186 components from 60 distinct parts.

Its main chip is the ESP32-S3-DevKitC-1 row A, from the ESP32 family. Other key parts include the OPA4376AIPW and TLV3201AIDBV. By type, the board carries 72 resistors, 54 capacitors, 30 connectors, 21 diodes, 4 ICs and 3 switches.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

TI One Voice research programme — one.witysk.org, Brussels, Belgium Board revision B · 2 September 2026

TI One Voice research programme — one.witysk.org, Brussels, Belgium Board revision B · 2 September 2026

The complete manufacturing package for EEG-CAR-01 Rev B: a battery-powered, 16-channel EEG headset built around an ESP32-S3 carrier board, together with the helmet and enclosure, the electrode harness, the firmware, the production test programme and fixtures, and all the packing, quality and regulatory documentation needed to produce the finished kit — flight case included.

Main components on the EEG-CAR-01 carrier board

OPA4376AIPWTLV3201AIDBV

EEG-CAR-01 carrier board bill of materials (BOM)

186 components, 60 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
OPA4376AIPW
OPA4376AID
U1, U2, U3
1
TLV3201AIDBV
U7
1
ADS1299 module #1 digital
J1
1
ADS1299 module #1 analogue signals
J2
1
ADS1299 module #2 digital
J3
1
ADS1299 module #2 analogue signals
J4
1
ADS #1 DAISY_IN / CLKOUT stub
J5
1
ESP32-S3-DevKitC-1 row A
J6
1
ESP32-S3-DevKitC-1 row B
J7
1
ES8388 codec module
J8
1
Codec microphone feeds
J9
1
ADuM4160 USB isolator, device side
J10
1
ATECC608B breakout
J11
1
Charger + fuel gauge module
J12
1
18650 protected cell
J13
1
Helmet harness -- electrodes (12-way screened)
J14
1
DIN 42802 EMG1 cheek
J15
1
DIN 42802 EMG2 submental
J16
1
DIN 42802 EMG3 laryngeal
J17
1
Boom microphone pigtail (TRRS)
J18
Show 40 more
QtyPartRefs
1
74HC595 contact-light driver
J19
1
microSD breakout, SDMMC 1-bit
J20
1
Boom-mic preamp module (part not settled, E-14)
J21
1
EOG / spare electrode header
J22
1
ADS1299 module #1 analogue rails
J23
1
Charge input from the panel USB-C
J24
1
Buck-boost module, TPS63020 class
J25
1
Debug / programming header
J26
1
Headphone jack pigtail
J27
1
Room microphone module
J28
1
ADS1299 module #2 analogue rails
J29
1
Helmet harness -- contact lights (10-way)
J30
1
PTC 1.1 A hold / 2.2 A trip
F1
1
BTN_A response (green)
SW1
1
BTN_B response (blue)
SW2
1
BTN_STOP (red)
SW3
17
BAV99
D1, D2, D3, D4, D5, D6, D7, D8 +9
3
BAT54S
D20, D40, D60
1
PESD5V0S2BT
D24
1
600R at 100 MHz, 1.5 A
L1
19
10n C0G 50V
C1, C2, C3, C4, C5, C6, C7, C8 +11
12
10u X5R 16V
C20, C40, C60, C70, C71, C72, C73, C74 +4
3
22n C0G 50V
C22, C42, C62
18
100n X7R 25V
C23, C24, C43, C44, C50, C51, C52, C63 +10
2
100n X7R 50V
C102, C103
16
68k 0.1% 25ppm
R1, R2, R3, R4, R5, R6, R7, R8 +8
12
10k 0.1%
R20, R21, R23, R24, R40, R41, R43, R44 +4
3
4k99 0.1%
R22, R42, R62
6
215k 0.1%
R25, R26, R45, R46, R65, R66
3
22k 0.1%
R27, R47, R67
3
2k2 0.1%
R28, R48, R68
6
10k 1%
R50, R51, R52, R81, R83, R88
8
1k 1%
R70, R71, R72, R73, R74, R75, R76, R77
7
0R
R78, R79, R87, R90, R91, R92, R93
1
470k 1%
R80
1
1M 1%
R82
2
100k 1%
R84, R86
1
150k 1%
R85
1
2k2 1% -- DNP
R89
2
4k7 1%
R94, R95

EEG-CAR-01 carrier board design files

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

EEG-CAR-01 carrier board: common questions

What microcontroller does the EEG-CAR-01 carrier board use?

The EEG-CAR-01 carrier board is built around the ESP32-S3-DevKitC-1 row A, from the ESP32 family.

How big is the EEG-CAR-01 carrier board?

The EEG-CAR-01 carrier board measures 150 × 130 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the EEG-CAR-01 carrier board?

186 components, from 60 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 EEG-CAR-01 carrier board design files?

From the stepvda/EEG-kit repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the EEG-CAR-01 carrier board design in my own project?

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

Can I test firmware for the EEG-CAR-01 carrier board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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