Tech specs
exocortex. $5,000. The first 100 ship in March 2027.
- Price
- $5,000Pre-order now. The first 100 ship in March 2027.
- Sensing
- 1,273 dry contacts, one channel each89.5% of the scalp under a contact board; 48 boards, 16 with a controller, 32 beside them
- Contacts
- Mill-Max 0919 surface-mount spring pin, rounded gold-plated plunger, 3.0 mm stroke; 25 g at first touch, 85 g half-way, 127 g at 2.54 mm
- Converters
- 179 × TI ADS131M08, 24-bit, 8 channels each500 samples per second per channel; one 2.048 MHz clock and one SYNC line to every converter; 6 ns skew budget across the head
- Front end
- A zero-drift TLV333 buffer behind every contactNoise about 1.9 µV rms, 0.5–100 Hz (calculated)
- Reference
- REF and BIAS spring pins on the hub's scalp face (driven-right-leg bias at 1.65 V); a JST-SH jack takes mastoid or ear-clip electrodes instead
- Cameras
- Five: three across the front, two on the back rimOV2640, 2 MP, 160° wide-angle; UXGA 1600 × 1200 at 15 fps or SVGA at 30 fps, MJPEG
- Audio
- A PDM MEMS microphone beside each camera, 16 kHz, 16-bit
- Privacy
- A status LED, lit whenever a camera's sensor is powered
- Processors
- Two RP2350B at 144 MHz; an ESP32-S3 for Wi-Fi and system control16 RP2040 controllers, one per main board; an ESP32-S3 on each camera
- Connectivity
- 2.4 GHz Wi-Fi from the hub; each camera streams over its own radioUSB-C, USB 2.0 High Speed (480 Mb/s) through an FTDI FT2232H
- Battery
- 1S lithium-polymer, 2000 mAh, 3.7 V, 54 A continuous (MaxAmps), under the pod cover
- Charging
- USB-C through an eyelet in the back of the cuff, 1.5 A (BQ25895). The contacts' supply is held off while a cable is plugged in: it charges only off the head
- Electrical safety
- Every contact sits behind at least 200 kΩ: 22 µA worst case, against a 50 µA limitDesigned toward IEC 60601-1 type BF; not certified
- Shell
- PETG, five printed parts, 2.4 mm wall305 g of PETG in the shell parts (solid model)57 h to print on an Ender-3 V3 SE
- Beanie
- Acrylic 2×2 rib knit with a turned-up cuffLenses through rubber grommets; USB-C through a moulded eyelet
- Open hardware
- Every board file, part and shell model is publishedBill of materials · Plans and files · Design notes
Specifications are design values. exocortex has not been built or measured yet: impedance, noise, motion, comfort and EMC are unmeasured. Not a medical device.