Posted on July 17, 2017July 27, 2017 by vooiLego WIFI autonomous tank Tweet0Pin0 DIY #Lego WIFI enabled autonomous tank MQTT controlled vehicle. Vehicle unit is subscribed to topics to move and turn.. The 3 button controller on the right publishes MQTT commands to the subscribed topics. I'm powering the unit using a portable charger. Gives almost an hour of fun!