S-FRAME: Status (voltage, current+, RSSI, airspeed+, status).A-FRAME: Attitude (pitch, roll, heading).G-FRAME: GPS information (lat, long, ground speed, altitude, sat.The Betaflight implementation of LTM implements the following frames: Number of OSDs, ground stations and antenna trackers. LTM is a lightweight streaming telemetry protocol supported by a Verify if you require a 5v/3.3v level shifters. Note: The SoftSerial ports may not be 5V tolerant on your board. You can use a single connection, connect HoTT RX/TX only to serial TX, leave serial RX open and make sure tlm_halfduplex is ON.Īs noticed by Skrebber the GR-12 (and probably GR-16/24, too) are based on a PIC 24FJ64GA-002, which has 5V tolerant digital pins. When using the diode disable tlm_halfduplex, go to CLI and type set tlm_halfduplex = OFF, don't forget a save afterwards. 1N4148 diodes have been tested and work with the GR-24.
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