Here is teardown of Stego FZK 011 thermostat. Thar is an electronechanical thermostat that can control heating resistor and/or cooling fan. The thermostat is based on bimetal strip that bends based on temperature. To get sharp transition and some hysteresis there is also magnet near silver calibration adjustment screw and electrical contacts. Components on board →
For years there has been prediction when cyber incident will kill someone. It seems that it has happened. “Some of the recent cybersecurity incidents involving industrial control systems (ICS) have resulted in injury and even loss of life, according to a survey conducted by Control Systems Cyber Security Association International (CS2AI).” More: https://www.securityweek.com/some-ics-security-incidents-resulted-injury-loss-life-survey →
Here is a tear-down of ST-OV2- 12DC/ 60DC/1 – 2905022 solid state relay from Phoenix Contact. This product is old, obsolete and manufacturing has been discontinued. Solid-state relay ST-OV2- 12DC/ 60DC/1 – 2905022 is a plug-in power solid-state relay (plug to certain Phoenix Contact wiring terminals), with LED and protective circuit in input and →
Here is tear-down of PT 2X2-24DC-ST over voltage protector for 24V systems: PT protective connector with protective circuit for two 2-wire floating signal circuits. 24 V DC nominal voltage. HART-compatible. What is insideComponents close-upWhat was found was two dual gas discharge tubes ant two other over voltage protectors. The gas discharge tubes were connected to →
Old Phoenix Contact terminals with gas tube based surge protection. →
Here is view to an old surge protection terminal. Overvoltage gets directed through 1K5 surge protector to hopefully well grounded DIN rail this terminal is plugged to (component wire makes contact with metallic DIN rail). →
A DIN rail is a metal rail of a standard type widely used for mounting circuit breakers and industrial control equipment inside equipment racks. DIN Rail Terminals are used in a wide range of applications including machinery, automotive industry, railway and process engineering. Here is a collection of videos on DIN Rail Terminals: What are →
Here is story of VTI acceleration sensor interfacing. VTI is an originally Finnish company that has been mostly knows for it’s acceleration sensors. The company has been known with names VTI Hamlin and VTI Technologies, and is now part of Murata. I found some used sensors with three wires. I found no data, some but →
https://www.hackster.io/mhanuel/industrial-iot-gateway-based-on-android-things-c680d1 This project is a proof of concept of an Industrial Gateway based on Android Things. Android Things allow to cut development time of the gateway by facilitating the integration with required interfaces such as Ethernet, UART, SPI and I2C. Android Things can be used in common SBC such as Raspberry Pi to have a quick →
http://www.edn.com/design/analog/4458856/How-to-send-full-duplex-data-over-a-single–twisted-pair–CAT-5-cable?utm_content=bufferc3b4e&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer Higher data throughput, shorter response time, and lower installation costs are the key drivers behind the ongoing improvement efforts in industrial network design. That is why allowing the immediate and continuous exchange of binary data has made the full-duplex bus the preferred interface choice in point-to-point connections. The world of RS-485 users is seeing →