MATEKSYS CRSF-PWM-6 Crossfire to PWM Converter

The Mateksys CRSF-PWM-6 is a lightweight serial-to-PWM signal converter designed to bridge TBS Crossfire and ExpressLRS (ELRS) receivers with traditional RC servos and ESCs. By translating a single CRSF serial input into six distinct PWM channels, it allows fixed-wing aircraft, scale models, and surface vehicles to utilise modern low-latency, long-range radio links without requiring a dedicated PWM receiver.

Key features

• Converts Crossfire (CRSF) protocol serial signals into 6 independent PWM outputs
• Directly compatible with TBS Crossfire and ExpressLRS (ELRS) receiver modules
• Selectable PWM update rates (50Hz default, configurable up to 400Hz) to suit standard analogue servos or high-speed ESCs
• Integrated failsafe configuration stores preset channel values in the event of signal loss

Specifications

• Supported protocols: CRSF (Crossfire, ELRS), any band (433MHz, 868MHz, 915MHz, 2.4GHz)
• Outputs: 6x PWM channels
• PWM frequency: 50Hz default, 100/160/330/400Hz selectable
• UARTs: 2 (receiver and GPS)
• Telemetry: RxBt, current, capacity, battery %, GPS, ground speed, heading, altitude, satellites
• Battery voltage sensing: 0-36V (built-in 1K:10K divider)
• Current sensor input: 0-3.3V from an external sensor
• Input voltage: 4-9V DC
• Dimensions: 25 x 16 mm
• Weight: 1.3g
• In the box: 1x CRSF-PWM-6, 2.54 mm Dupont pins

Wire your receiver's TX and RX pads directly to the converter's UART to establish the link. Note that this board does not feature an onboard BEC; your servos and connected electronics will draw power directly from the 4-9V voltage source you supply to the board.