https://predictabledesigns.com/wireless_technologies_bluetooth_wifi_zigbee_gsm_lte_lora_nb-iot_lte-m/ Deciding what type of wireless technology your new product should use can be an overwhelming task. This article has organized the various wireless technologies into a groups based on functionality, data speed, and operating range. This is a long, very detailed article. →
I have understood that hooking up an old telephone handset to work with a cell phone is simply a matter of connecting together the correct wires. You need to wire the microphone and speaker in the old telephone’s handset to the microphone and speaker in the cell phone’s headset connector. I decided to try that →
https://arstechnica.com/gadgets/2018/11/the-next-version-of-http-wont-be-using-tcp/ HTTP is switching to a protocol layered on top of UDP. Today’s HTTP (versions 1.0, 1.1, and 2) are all layered on top of TCP (Transmission Control Protocol). TCP isn’t particularly tuned for the kinds of scenarios that HTTP is used for. TCP requires a number of round trips between client and server to →
45 years ago today TCP/IP protocol was born. Happy cake day TCP/IP. Many people owe career to TCP/IP+Unix+Linux. So much changed over years. Read some history at http://history-computer.com/Internet/Maturing/TCPIP.html →
http://www.southgatearc.org/news/2018/october/led-lighting-can-disrupt-radio-communications.htm#.W9XAslNyg0M Dutch amateur radio society VERON reports the current EMC standard, developed in the last century, no longer suffices. “The faulty LED lights disrupt wireless connections in and around the house. Radiocommunications Agency therefore starts an investigation into 50 LED lamp suppliers.” “A number of lamps do not appear to meet the EMC standard. Especially →
Bye bye to traditional wired telephone lines in Finland. Telephone companies are increasingly removing wired phone lines, so phones are thrown out and phone connectors stay lonely unused on the wall. Wired phones are replaced with desk-phone looking cell phone. 4G data is sold as replacement for ADSL (some lucky ones can get fiber). In →
http://about.att.com/story/2018/5g_cell_specifications.html AT&T is releasing to the Open Compute Project detailed specifications for a cell site gateway router, following up on an earlier commitment. This “white box” blueprint is a reference design that any hardware maker can use as a guide to build these routers. AT&T plans to install them at tens of thousands of cell →
https://www.pcper.com/reviews/General-Tech/Steve-Gibsons-Three-Router-Solution-IOT-Insecurity Here are some useful tips for securing networks that have IoT devices: Even before the formulation of the term “Internet of things”, Steve Gibson had proposed home networking topology changes designed to deal with this looming IoT security threat. Unfortunately it seems that only little or no thought is given to the security aspects →
Wi-Fi Alliance just announced a new marketing policy for Wi-Fi technologies. Their goal is that new new approaches allow users to more easily differentiate between different Wi-Fi® technologies from version numbers than using traditional long IEEE technical names. The newly introduced IEEE 802.11ax technology will be known in the future with the marketing name Wi-Fi →
https://www.sciencealert.com/brain-to-brain-mind-connection-lets-three-people-share-thoughts This is fancy as one science fiction coming reality! Neuroscientists have successfully hooked up a three-way brain connection to allow three people share their thoughts – and in this case, play a Tetris-style game. The team thinks this wild experiment could be scaled up to connect whole networks of people. It works through a →