Cables

Modified: 29 September, 2020

Insulation materials, cable types, standards, mutual capacitance and more info on cables.

Component Designators

Modified: 28 September, 2020

A list of the most popular component designators used on schematics and PCB silkscreens.

PROFIBUS

Modified: 28 September, 2020

Standards, transmission distances, baud rates, transceivers, high-level protocols and more info about the PROFIBUS communication protocol.

Linux Serial Ports Using C/C++

Modified: 27 September, 2020

A walk-through on how to configure serial ports correctly in Linux.

Buck Converters

Modified: 23 September, 2020

COMMUNICATION PROTOCOLS

MQ Telemetry Transport (MQTT)

Date Published:	February 16, 2014
Last Modified:	February 16, 2014

Overview

MQTT is a lightweight publish/subscribe communications protocol that uses TCP/IP. It is designed for remote sensors to communicate with controlling devices. The specification is under a royalty-free licence. Interesting features of the protocol include the one-to-many messaging service (publish/subscribe), the Last Will/Testament feature, and the three qualities of service. You can read more about it here.