Embedded Hardware Architecture
Technical breakdown of the SIGNAL hardware stack. Each module is engineered for low-latency performance and accessibility.
- Dual-core processing for sensor fusion
- Integrated Bluetooth/Serial bridge
- Low-power sleep mode for battery
- Voltage divider input calibration
- High-durability conductive tracks
- Breathable nylon integration
- Calibrated resistance range
- Low-noise signal output
- Direct PWM motor control
- Low-latency pulse triggering
- Compact form factor for wrist
- Safety current limiting
- I2S digital audio interface
- High-efficiency amplification
- Compact acoustic chamber
- Speech synthesis integration
Need Custom Hardware Integration?
Consult with our engineering team to adapt SIGNAL for specific accessibility requirements or custom sensor arrays.
Build Your SIGNAL
Follow this five-step guide to assemble your communication glove, calibrate sensors, and connect your hardware to the browser.
Sensor Wiring
Connect flex sensors to analog pins using voltage dividers to ensure stable signal range for finger bending detection.
Firmware Flash
Flash the ESP32 with the signal-bridge firmware to stream JSON sensor data over serial at a steady 30 Hz rate.
Glove Calibration
Calibrate sensor thresholds by holding a flat hand and then a fist to map the full range of finger movement.
Battery Safety
Install protection circuits for LiPo batteries to prevent over-discharge and ensure safe operation during long use.
System Test
Verify the full end-to-end connection from glove sensors to the browser digital twin and speech output.