Initiation Board 3-P

A reliable initiation device for FPV drones with a multi-layered safety system, impact detection in any direction, and quick configuration for the specific task — one solution for a wide range of combat tasks.

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The Hootronics Initiation Board 3-P is engineered for maximum reliability in demanding field conditions. The ability to quickly configure and combine activation modes allows a single board to be used across a wide range of combat tasks. It features a multi-layered safety system — mechanical safety pin, configurable safety timer, ARM/DISARM remote control, and 6 levels of circuit-level protection. The built-in accelerometer detects impacts from any direction, including collisions with anti-drone nets. The board is compatible with interceptor drones — supports full remote deactivation upon return. Thanks to its very low power consumption (30 mA), the board is also perfectly suited for ambush drones that wait in position for a target to appear.

Operating Modes

• Autonomous — triggers from impact sensor, whiskers contact, or self-destruct timer
• Flight controller control via PWM — adds remote detonation from the transmitter, single or dual servo control
• Mining mode — detonation on flip-over, automatic (timer-based) or manual (controller-activated)

Safety System

• Mechanical safety pin — breaks the circuit between the combat capacitor and detonator terminals; when inserted, shorts detonator leads to prevent accidental firing
• Safety timer — configurable delay after pin removal during which the board ignores impacts and commands (default 2 min)
• Transistor switches — upper transistor activated by modulated signal only; dual redundant lower transistors disconnect ground
• Combat capacitor disconnected from power and shorted to ground during DISARM
• Galvanic isolation electrically isolates the board from the flight controller
• Interference-resistant whiskers respond only to their own modulated signal
• TVS diodes on detonator terminals protect against induced voltages

Video Overview

Specifications

Safety System	Pin + timer + ARM/DISARM + 6 circuit protections
Interceptor Drone Compatibility	Yes
Ambush Drone Compatibility	Yes
Detonator Compat.	≤ 3A activation current
Detonator Voltage	~15V
Power	AAA battery (LR03)
Current Draw	30 mA
Battery Life	>24 h
Impact Sensor	Accelerometer (all axes)
Safety Timer	2 min (configurable)
Self-Destruct	30 min (configurable)
OSD Status Output	Yes (via Betaflight)
Indication	LED + audio
FC Connection	JST XH2.54 6-pin
Detonator Conn.	Silicone wires + WAGO
Mounting	Zip tie slots + 3 mm holes
Configuration	Wi-Fi module
Dimensions	100 × 33 × 25 mm
Weight	47 g
Operating Temp.	−30 to +50 °C

Additional Features

• OSD status display via Betaflight integration
• Wi-Fi configurator to quickly tailor the board to your needs. Detailed parameter descriptions are available on the configurator page
• Remote mining — automatic (timer-based) and manual (controller-activated)
• Delayed detonation with configurable delay
• Anti-drone net detection algorithm
• Self-diagnostics at power-on with LED and audio error reporting

Mounting

• Anti-slip pad on the back of the board ensures a secure grip on any surface
• Zip tie slots and 3 mm mounting holes for flexible attachment options
• Can be mounted on the drone frame or directly on the payload
• The board must be firmly secured — it should not wobble or rattle against the housing, as the accelerometer triggers on impact

Package Contents

Initiation board with pre-installed AAA battery, WAGO 2x2 clamp, 200 mm cable with JST XH2.54 6-pin connector, anchor and sling, quick start guide.