Psi Tripwire
The Psi Tripwire is a deployable static sensor that watches a defined area for anomalous Psi Field-relevant signatures and alerts the local Psi Mesh when something crosses threshold. It is the Tho'ra Clan's perimeter sensor for Psi-Tech operations — a Psi Compass that does not need to be carried, can be left for hours or days, and reports to the team rather than to a wearer.
Overview
A Tripwire unit:
- Watches a single locale for magnetic, electrostatic, ULF/Schumann, and broadband-RF anomaly.
- Classifies detections against the local Psionic Threat Model signature library.
- Alerts via the Psi Mesh when a class-above-threshold event is detected; logs everything regardless.
- Sleeps aggressively between checks (default 5 % duty cycle) so a tripwire runs for days on a single battery.
Tripwires are deployable individually or as a small array around a perimeter (a Star Seer Observatory grounds is the canonical example).
Theoretical Basis
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Static-site anomaly detection is well-established environmental instrumentation.
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A perimeter of static sensors can detect classes of activity that a mobile operator misses (slow drifts, long-duration events).
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A subset of detected events are psionic intrusions; the Tripwire is the early-warning layer of the Clan's Psionic Defenses doctrine.
Subsystems and BOM
Mk0 (target ≤ \$25)
Field-deployed Psi Compass Mk0 + handwritten log + operator on watch rotation. Demonstrates the discipline; obviously labor-intensive.
Mk1 (per unit, target ≤ \$140)
- nRF52840 + LoRa SX1262 (RAK4630) — \$30
- HMC5883L ×2 (gradiometer) — \$16
- Electrostatic probe — \$5
- RTL-SDR Blog v4 (broadband RSSI; Mk1 some sites only) — \$40 optional
- 18 650 ×2 + low-quiescent boost — \$15
- Weatherproof enclosure (IP65) — \$25
- Solar trickle (5 W panel + charger) — \$15
Battery life target on solar: indefinite. Battery life without solar: 7–14 days depending on duty cycle and SDR usage.
Mk2 / Mk3
Mk2: fluxgate magnetometer, Schumann-band antenna, hardened IP67. Mk3: integrated with the Resonant Pipeline and the Star Seer Observatory alert layer.
Build Notes
- Site survey first. Run a 24-hour baseline before arming; thresholds are per-site, not factory.
- Solar-first power. For multi-day deployments, the 5 W panel is the difference between "checked weekly" and "indefinite".
- Mesh-first reporting. The unit publishes alerts to the Psi Mesh; if no mesh is present, it logs locally and beacons every N minutes.
- Tamper-evidence. Enclosure carries a tilt + accelerometer; any disturbance generates an alert frame.
Safety and Ethics
- No emitter (sensor-only).
- Deployment respects local law; public-space placement requires landowner permission.
- No personal data captured; the Tripwire logs environment + its own state.
- Tripwire data is local-first; mesh-published alerts carry classification + bearing, not raw signal.
Maturity
Maturity (Mk0 → Mk3)
See Tho'ra Tech Maturity Levels for the convention.
| Mark | Phase | Status | Confidence | Evidence Base | Next Validation Gate |
|---|---|---|---|---|---|
| Mk0 | Cosplay-type | Complete | 100% (symbolic) | Ritual + build practice | User satisfaction |
| Mk1 | Prototype | Active | — | — | — |
| Mk2 | Test-type | Planned | — | — | — |
| Mk3 | Production | Projected | — | — | — |
Failure Modes and Mitigations
- Battery exhaustion. → Solar trickle; mesh-reported low-battery alert; graceful close-out.
- Theft / tamper. → Tilt sensor + alert frame; tamper-evident seal; serial-number bind to Resonant Card revocation log.
- False positive from weather event. → Multi-channel agreement threshold; site-specific baseline learning.
- No mesh reachable. → Local logging; beacon-on-interval; operator collects on site visit.
- Calibration drift over long deployment. → Periodic baseline re-anchor; metadata stamp on every frame.
- Privacy concerns in public-adjacent placement. → Documentation card on enclosure; landowner permission documented.
