HardLabs

8 Channel EEG Wifi Board

biomurph·ThinkerAFE·LibraryFiles/ThinkerHeadset.kicad_pcb

8 Channel EEG Wifi Board layout, top view — open source ESP32 board by biomurph

About the 8 Channel EEG Wifi Board

8 Channel EEG Wifi Board is an open source ESP32 PCB design by biomurph, published on GitHub. It is a 4-layer board measuring 56.9 × 90 mm, with 181 components from 41 distinct parts.

Its main chip is the ESP32-WROOM, from the ESP32 family. Other key parts include the AP2112, MCP73833, AD8237, LM7332 and MCP3912. By type, the board carries 73 resistors, 64 capacitors, 30 ICs, 6 diodes, 4 connectors and 1 crystal.

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

From the project

Analog Front End for Headset

Main components on the 8 Channel EEG Wifi Board

AP2112ESP32-WROOMMCP73833AD8237LM7332MCP3912MCP6V31U74LVC2G00TPD4E1B06NCP551NCP300

8 Channel EEG Wifi Board bill of materials (BOM)

181 components, 41 distinct parts.

QtyPartRefs
1
AP2112
U1
1
ESP32-WROOM
U2
1
MCP73833
U3
8
AD8237
U4, U5, U6, U7, U13, U14, U15, U16
1
LM7332
U8
2
MCP3912
U9, U11
9
MCP6V31U
U10, U18, U19, U20, U21, U22, U23, U24 +1
1
74LVC2G00
U17
3
TPD4E1B06
U26, U27, U29
2
NCP551
U30, U32
1
NCP300
U31
1
Crystal_Small
Y1
1
ESP_PROG
P1
2
CONN_01X05
P2, P3
1
USB_MICRO_10118192AC
P4
1
JS_2_Battery
B1
1
SPDT
SW3
1
10K/THERMISTOR
TH1
1
MBR120
D1
1
LED-DONE
D2
Show 21 more
QtyPartRefs
1
LED-CRG
D3
1
LED
D4
1
RED
D6
1
D_Schottky
D7
28
0.1uF
C1, C7, C8, C9, C10, C11, C12, C13 +20
18
1uF
C2, C15, C16, C17, C18, C22, C25, C27 +10
5
10uF
C3, C5, C6, C54, C63
1
100uF
C4
2
18pF
C21, C23
1
1nF
C26
1
0.01uF
C41
8
3.3uF
C42, C43, C44, C45, C46, C47, C48, C49
2
50
R1, R4
1
12K
R2
12
1K
R3, R5, R9, R10, R19, R20, R21, R22 +4
1
10K
R6
10
330K
R11, R12, R13, R14, R27, R31, R47, R48 +2
15
100K
R15, R16, R17, R18, R28, R29, R30, R32 +7
8
2K
R23, R24, R25, R26, R35, R36, R37, R38
16
1M
R52, R53, R54, R56, R58, R60, R61, R62 +8
8
500K
R55, R57, R59, R64, R66, R68, R72, R74

8 Channel EEG Wifi Board design files

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

8 Channel EEG Wifi Board: common questions

What microcontroller does the 8 Channel EEG Wifi Board use?

The 8 Channel EEG Wifi Board is built around the ESP32-WROOM, from the ESP32 family.

How big is the 8 Channel EEG Wifi Board?

The 8 Channel EEG Wifi Board measures 56.9 × 90 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 8 Channel EEG Wifi Board?

181 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the 8 Channel EEG Wifi Board design files?

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

Can I use the 8 Channel EEG Wifi Board design in my own project?

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

Can I test firmware for the 8 Channel EEG Wifi 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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