ZIAA ARCHIVE RECORDPROTOTYPES
PROT-146prototypeVERIFIED RECORD
Motorized Haptic Feedback Keyboard with Dynamic Spring Resistance (Revision 5.2)
PROT-146: HAPTIC-KEYBOARD-V5CLEARANCE: 1-ALPHASTATUS: ACTIVE BENCHYEAR: 2022
Motorized Haptic Feedback Keyboard with Dynamic Spring Resistance (Revision 5.2)
Discipline: Perceptual Interfaces · Lead Researcher: Soren Lindqvist
OPERATIONAL ABSTRACT
A 49-key performance interface where each key is driven by a motorized actuator that simulates physical hammer actions, spring tension, or hydraulic fluid resistance. Enhanced revision 5 with improved low-noise shielding and updated real-time firmware.
TECHNICAL SUMMARY & TRANSDUCTION DYNAMICS
Individual coreless DC motors provide programmable force-feedback at 4 kHz refresh rates, allowing keys to physically push back or click at microtonal scale divisions. Calibrated for studio and field use under ZIAA experimental protocols. Harmonic distortion measured under 0.02% across primary operating range.
ENGINEERING SPECIFICATIONS
DIMENSIONS
360 × 245 × 95 mm
OPERATIONAL BANDWIDTH
10 Hz – 42 kHz
POWER CONSUMPTION
42 W (PoE+ Gigabit Ethernet)
SIGNAL-TO-NOISE
109 dB (A-Weighted @ 1 kHz)
PRIMARY TRANSDUCER
High-torque coreless motors coupled to quarter-sawn maple key levers
COMPUTATIONAL CORE / DSP
Distributed network of STM32F0 microcontrollers over isolated CAN bus
VECTOR TECHNICAL SCHEMATIC // BLUEPRINT
FIG 1.1 // AXIAL CROSS-SECTION ELEVATION
REF: HAPTIC-KEYBOARD-V5-SEC-APLAYABLE PROTOTYPE ACOUSTIC EMISSION BENCH
ZIAA ACOUSTIC SYNTHESIS TEST BENCH // V4.1STANDBY
HAPTIC-KEYBOARD-V5 // CALIBRATION PROFILE
CH-A TIME-DOMAIN OSCILLOSCOPE (1024-PT)STEREO BINAURAL
CH-B 64-BAND SPECTRAL OCTAVE DECOMPOSITION20 Hz – 20 kHz
CARRIER137.5 Hz
FM RATE8.5 Hz
BINAURAL Δ±2.0 Hz
CUTOFF940 Hz
RESONANCE Q7.0
CAVITATION11%
WAVE:
FILTER:
35%
BILL OF MATERIALS (BOM) & COMPONENT TOLERANCES
| Component | Supplier | Part No. | Tolerance |
|---|---|---|---|
| Precision Audio Transducer Assembly | ZIAA Precision Machining Shop | ZIAA-TX-145 | ±0.02 mm |
| Ultra-Low-Noise Operational Amplifiers | Texas Instruments / Burr-Brown | OPA1612A-SOIC8 | 0.000015% THD+N |
| Embedded DSP Microcontroller Core | PJRC / STMicroelectronics | STM32H743VIT6 480MHz | Industrial -40C to +85C |
| Conductive Plastic Continuous Potentiometers | Bourns Electronics | 3852A-282-103AL | ±10% Linear |
| Machined Anodized Aluminum Enclosure | ZIAA Mechanical Prototyping Bench | ENC-AL-225 | MIL-A-8625 Type II |
BENCH & FIELD OPERATION NOTES
- High acoustic output capability: monitor SPL levels during resonant feedback experiments.
- Precision optical components: protect lenses from direct dust and moisture during field deployment.
SPECULATIVE PATENTS:PAT-2022-026
FIELD SITES:Studio B (Physical Computing & Speculative Hardware)