Futaba 155

Futaba 155 => rate gyro system
rate gyro
mastering rate gyro flight mechanics

drones and other aircraft need gyroscopes

photo of device here
AI Overview
Based on the standard Futaba "G" connector (commonly used in older, but often still relevant, radio systems) and standard 3-pin receivers, the pinout configuration is typically designed with polarity safety in mind.
Futaba G-Connector Pinout (3-Pin)
Looking at the receiver plug (female side) or the servo plug (male side), the pins are arranged in a row:

Outer Pin (Usually Black/Blue wire): Negative (
)
Center Pin (Usually Red wire): Positive (
)
Inner Pin (Closest to center/lead out - White/Yellow wire): Signal

Key Features

Safety: Futaba connectors have a polarizing tab to prevent plugging them in upside down.
Compatibility: All standard Futaba receivers maintain the negative pin on the outside.