Wiring 2N7000 AN10441 as Logic Level Converter for i2C Protocol Devices

Other micro-controller uses 5v as standard input voltage, many latest device modules, popular sensors, GPS, RF modules, Flash Memories, SPI storage, Display, use 3 to 3.3v  most of this devices requires logic level conversion to protect them from high voltage

How MQTT Telemetry Transport Protocol Works for IOT Test with Mosquitto in Open GPIO Micro Computer

MQTT (Message Queuing Telemetry Transport) Protocol is a M2M (Machine to Machine) lightweight messaging protocol widely used in IOT (Internet of Things) that provides a resource constrained network clients. Almost IOT cloud platform support MQTT protocol to send and receive