lostModelAlarm is an ultra-lightweight, high-efficiency recovery beacon for RC aircraft and scratch-built models. Built around the ATtiny85 microcontroller, it utilizes hardware Watchdog Timer (WDT) deep-sleep cycles to deliver maximum battery efficiency, giving your model hours of active tracking time in the event of a crash or lost signal.
- Ultra-Low Power Consumption: Utilizes ATtiny85 deep-sleep modes (~5–15 µA idle draw) via Watchdog Timer wake-up interrupts.
- Configurable Delay Windows: Pre-flight status confirmation followed by silent flight timing before active alarm triggers.
- Standalone Safety: Designed to run off main BEC power or a dedicated 1S LiPo backup power circuit.
- Future-Proof Expansion: Hardware-ready layout for high-brightness strobe LEDs and ambient light sensing (LDR) for smart day/night recovery modes.