Bill of Materials

This is the full bill of materials for NeuroAR. Most of the materials were already available at the lab, and the costs exclude shipping and fees. I ordered more components than this for different experiments (a higher quality camera, different electrodes and connectors), but these are the parts that are actually in the project.

Part / material	Source	Cost (USD)
XIAO ESP32-S3 Sense	DigiKey	$13.99
ADS1292IPBSR	DigiKey	$9.84
SSD1331 OLED	Akihabara / Amazon	$9.27-$12.49
Plano-convex lens (22.4 mm diameter)	DigiKey	$31
15x15x15 mm beam splitter cube	AliExpress	$10
BITalino electrodes / electrode alternative	BITalino (FabLab Benfica stock) / DigiKey	~$23 / $16
JST display 7-pin connector	DigiKey	$0.80
Matte Black Bambu PLA	Amazon	$14
Mirror acrylic	FabLab Kannai stock / Amazon	5-pack of 12x12 in sheets: $33, the piece needed costs cents
Vinyl roll	FabLab Kannai stock / Amazon	Full 12 in x 14 ft: $10, the piece needed costs cents
Additional electrode pads	Amazon	20-piece sets: ~$8
10k 0805 resistors, R1, R2, R3, R10, R11, R12	DigiKey	6 x $0.10 = about $0.60
49.9k 0805 resistors, R4, R5	DigiKey	2 x $0.10 = about $0.20
1M 0805 resistors, R6, R7, R8, R9	DigiKey	4 x $0.10 = about $0.40
0 ohm 0805 jumper resistor, R13	DigiKey	1 x $0.10 = about $0.10
0.1 uF 0805 capacitors, C1, C3, C8, C10	DigiKey	4 x $0.13 = about $0.52
1 uF 0805 capacitors, C2, C4, C6, C7, C9	DigiKey	5 x $0.21 = about $1.05
10 uF 1206 capacitors, C5, C11	DigiKey	2 x $0.36 = about $0.72
6 mm SMD tactile button, SW1	DigiKey	1 x $0.20 = about $0.20
Single-sided copper FR4 board for PCB milling	DigiKey	one 5x3 inch FR4 board is about $11.09
Minimum total	Lowest listed cost for each row	about $127.78 + a few cents for the mirror acrylic and vinyl pieces

This is of course in addition to the equipment we use at the lab like the 3D printer, the vinyl cutter, the laser cutter, and the PCB milling machine.

NeuroAR is released under the Fab license: (c) Yusuf Kusibati, June 2026.