RadioMaster Sensor UART to Dual PWM Adapter Cable
by RadioMaster

RadioMaster ERS Sensor UART to Dual PWM Adapter Cable

The RadioMaster ERS Sensor UART to Dual PWM Adapter Cable is a critical integration component designed to bridge the gap between high-fidelity telemetry sensors and standard PWM-based ExpressLRS (ELRS) receivers. Engineered for sUAS manufacturers, defense contractors, and advanced educational robotics programs, this adapter allows for the deployment of the full ERS sensor suite—including GPS, current, and RPM sensors—on receivers that lack a dedicated, plug-and-play UART port. By converting the sensor’s specialized JST-GH connector into standard servo and Dupont-style interfaces, it ensures that tactical and industrial drones can maintain sophisticated data logging and real-time telemetry without requiring a complete hardware overhaul.

This adapter is particularly valuable for the sUAS and military markets, where mission-critical data must be routed through specific receiver pins. Using the ExpressLRS Web UI or the ELRS LUA script, operators can reassign two existing PWM channels on their receiver as TX and RX ports. The 3-pin servo connector handles the primary power and signal link, while the single-pin Dupont lead provides the secondary serial line. This configuration preserves the remaining PWM channels for flight control surfaces or ESCs, making it an essential tool for high school and college engineering labs developing custom fixed-wing or multi-rotor platforms. Its lightweight, 85mm footprint ensures that it can be easily tucked into compact airframes without affecting the aircraft’s center of gravity or overall weight.

Technical Specifications

• Connector Type: Female JST-GH to 3-Pin Servo Plug and 1-Pin Dupont Connector

• Wire Length: 85mm

• Total Weight: 1.81g

• Protocol Compatibility: CRSF / ExpressLRS Telemetry

• Signal Support: UART (TX and RX) over PWM channels

• Receiver Compatibility: Optimized for RadioMaster ER series (ER6, ER8, ER8G, ER8GV) and standard ELRS PWM receivers

• Functionality: Converts UART telemetry data for pin-reassignable PWM outputs

What is Included

• 1x RadioMaster ERS Sensor UART to Dual PWM Adapter Cable

• 2x Clear Heat-Shrink Tubes for secure connector insulation