Custom firmware for CRSF/ELRS signal relay between RC radios and multiple TX modules.
Needed to relay CRSF protocol data from a single RC radio to multiple ELRS TX modules simultaneously, with proper frame routing and timing.
Custom firmware on STM32H743 that parses CRSF frames from the radio input, routes RC channels and service frames (HANDSET, Lua, MSP) to multiple TX module outputs via UART.
Active development. CRSF frame parsing and relay working. Published a Saleae Logic protocol analyzer extension for CRSF debugging.