SDTxArm Pelion Kit is a Modular IoT Devkit Designed for Arm Mbed Cloud Platform

SDTxArm Pelion Kit

South Korea based Sigma Delta Technologies’ SDTxArm Pelion Kit is a modular development kit comprised of a baseboard, as well as CPU and interface modules that is specifically designed to work with Arm Pelion cloud based device management service and Mbed OS for wearables and IoT applications. DAP (Debug Access Port) Station Ver.2 baseboard key features and specifications: USB – 1x micro USB 2.0 port Expansion I/Os via rows of through-holes 3x UART Interfaces 4x SPI Interfaces 3x I²C Interfaces 7x GPIO 4x analog inputs Debugging / Programming 1x TC2050 tag connection designed to allow programming without purchasing additional Interface if the user already has an appropriate Interface Module from other companies. I assume this is related to Tag Connect TC2050-IDC. 1x SD-TAG with JTAG/SWD signals Power Supply – 5V via micro USB port The DAP station takes an SDT Board (i.e. CPU board), as well as an interface board for example a UART to USB debug board. The board …

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Introduction & Differences Between RS-232, RS-422 and RS-485 (Video)

Differences RS-422 RS-485 Profibus

RS-232, RS-422, and RS-485 are pretty old serial communication interfaces, and I was not even born when RS-232 was specified in 1962, but there are still commonly used today in various applications such a points-of-sales,  multi-meters, industrial equipment like PLC or HMI, as well as medical devices. Maxim Integrated shared a video – embedded at the end of this article – on  social networks today explaining the fundamentals of serial transmitter devices and differences between RS-232, RS-422, RS-485, and Profibus. The video goes into more details with a glossary of terms, discussion of cable length and bitrate, hand-shaking, and auto-shutdown, but I’ll provide a quick summary below: RS-232 supports one transmitter and one receiver, and operate between -15 and +15V (with input tolerance of up to -/+ 25V). A logic zero is between +3 and +15V and a logic one between -15 and -3V on the receiver side RS-422 is an improved version of RS-232 with twisted pair cable and …

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