First I wase using for power only 6 AA battery pack for motors shield AND for the nodemcu board (with a jumper between "vim" and "vm" pins on the motors shield). It work very well but, with time, car ...
IOXY (IoT + Proxy) is an MQTT intercepting proxy written in Golang. It supports MQTT, MQTTS and MQTT over WebSockets and has both a CLI and a GUI. We frequently perform security assessment on IoT ...