Mighty Zap Linear Actuator arduino control

Hello, I am trying to use the mighty zap with arduino, it says in an older question that I need to convert the half duplex TTL signal from the actuator to a full duplex for the Arduino
How to do that ? is there any circuit showing these steps please ?

Hi,

You can find plenty of interface converters here. Here’s one example for RS-485 and UART (full duplex).

Typical connection from Arduino UART to a RS-485 (half duplex) looks something like this.

Sincerely,