plurigrid OpenSCAD BCI Hardware
Parametric 3D models for brain-computer interface and neuromodulation hardware.
Assets Index
| Model | File | Purpose |
|---|---|---|
| Electrode Holder Mod | electrode_holder_mod.scad |
Modified EEG electrode holder for dry/wet electrodes |
| Paste Adapter | paste_adapter.scad |
Conductive paste application adapter for wet EEG |
| Headset Hook | headset_hook.scad |
Mounting hook for BCI headset suspension |
| C3/C4 Pogo Comb | c3c4_pogo_comb.scad |
Spring-loaded pogo pin electrode comb for motor cortex (C3/C4 10-20 system) |
| fNIRS ECU Housing | ecu_housing_base.stl + ecu_housing_lid.stl |
OpenNIRScap electronics enclosure |
| fNIRS Sensor Capsule | sensor_capsule.stl |
Light source/detector capsule for fNIRS optodes |
| Electrode Plate 8-up | electrode_plate_8up.stl |
8-position electrode array plate |
| Eurorack Frame | frame-rail.stl, frame-connector.stl, frame-stand.stl |
Moduleur eurorack housing for BCI signal chain |
Usage
# Render STL from SCAD
openscad -o output.stl -D 'electrode_diameter=10' electrode_holder_mod.scad
# Batch render all SCAD files
for f in *.scad; do openscad -o "${f%.scad}.stl" "$f"; done
Design Constraints
- All models parametric (electrode diameter, spacing, head circumference)
- Print orientation: flat side down, no supports needed for most parts
- Material: PETG recommended for skin contact (autoclavable)
- Tolerances: 0.2mm for press-fit, 0.4mm for sliding fit
Integration
- Pairs with
zig-syrup-bcifor signal acquisition firmware - Pairs with
opennirscap-buildfor fNIRS cap assembly - Pairs with
cyton-donglefor OpenBCI Cyton/Daisy connection