I am developing a remote control of G-gage train model by ESP-WROOM-02 (ESP8266EX). using Arduino IDE for ESP8266.
A motor of G-gage train model is controlled with PWM of ESP8266 and a full bridge motor driver (TOSHIBA TA8428K).
My iOS application to remote control is made with Xamarin (C#). My iOS app can control of speed and select of direction of running.
I added a video of test driving in my garden railway.