M0184 ELRS reciever bricks itself upon switching output mode to SBUS
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Hello,
I'm trying to use the Zorro Blue transmitter (MRC-Z0001-1) and ELRS 'blue' receiver (MDK-M0184-1-01) as the RC control for a non-ModalAI aircraft that requires SBUS or PPM input to its autopilot.
I was able to bind the TX and RX out of the box via the transmitter menu, and access the receiver settings through the transmitter once bound. The LED pattern on the receiver showed normal functionality (both solid). However, since the default output protocol of the RX is CRSF my autopilot couldn't see the input, as expected. I then changed the 'Protocol' setting at the top of the receiver options to SBUS (again via the TOOLS - > ExpressLRS menu on the transmitter) and power cycled.
Since then the receiver has been non-functional.
Both green and red led's light up when the receiver is powered, but they both go away within a second and there is no pattern or light of any kind from either. This is really strange since that's not a listed option on the LED pattern page for ELRS (https://www.expresslrs.org/quick-start/led-status/#receivertransmitter-led-status) The transmitter does not see the receiver and so I am unable to change any receiver settings that way.I've also tried reflashing the RX via your documentation here: https://docs.modalai.com/elrs-configurator/ but the configurator fails to initialize the com port or establish any sort of communication with the receiver, output from the relevant part of that process inserted below as a code section.
I've tried two different types of RS232 / TTL UART to USB adapters and swapped RX/TX all with the same result.I also retried the entire process with a second fresh out of the box RX and got the same result. I did verify the RX and TX worked properly after bind though power cycling before changing the protocol to SBUS again, which bricked a second receiver. The second receiver also has the same LED behavior.
I did not update or modify the firmware or any other parameters on either the TX or RX before this, so everything is defaults other than the one protocol setting I changed.
Looking for any advice on how to proceed and get this RX/TX pair working, I really need to get this specific ELRS system working as my team needs NDAA compliance but also the performance of ELRS.
=================== FIRMWARE UPLOAD =================== Bin file 'C:\Users\JOSHUA~1\AppData\Local\Temp\modalai.rx_900.m0184.uart_ilYd1e\firmware.bin' Port COM5 @ 420000 Target 'MODALAI_M0184_RX' Using CRSF (full duplex)! ======== PASSTHROUGH INIT ======== Trying to initialize COM5 @ 420000 Warning: 'No CLI available. Already in passthrough mode?, If this fails reboot FC and try again!' Attempting to reboot into bootloader... [1] retry... [2] retry... [3] retry... [4] retry... [5] retry... [6] retry... [7] retry... [8] retry... [9] retry... [10] retry... [FAILED] to get to BL in reasonable time