Water level sensor QDY30A modbus RS485 with ESP32 S2 mini

Masterzz · March 3, 2024, 8:46pm

maple550:

[19:28:22][V][modbus_controller:047]: Sending next modbus command to device 1 register 0x04 count 1
[19:28:22][V][modbus:199]: Modbus write: 01.03.00.04.00.01.C5.CB (8)
[19:28:22][V][modbus_controller:509]: Command sent 3 0x4 1
[19:28:22][D][uart_debug:114]: >>> 01:03:00:04:00:01:C5:CB
...

Not a big expert in RS485, but this looks like ESP sending something.
Suggest to connect DE/RE to ESP and configure as descrobed.
Why not.