S-Bus with HEX-Inverter SN74LS04 in line from receiver to AIOP Serial 1, RX1 connected. (like config.h sbus-description)
SN74LS04-Inverter made by my own (Pin 14: 5V+, Pin7: ground, Pin1: SBUS from Receiver, Pin 2: Output to AIOP)
in config.h: #define SBUS
Problem:
After binding receiver:
ALL inputs from receiver (trottle, pitch, roll, ....) are not stable, moving around, max, min,...
But changes on the sender are working.
After switching off sender (no binding with receiver), the signals are still not stable.
Any idea? Missing resistors at my hex-inverter?

Louis