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When I first started testing Vizio's 65-inch Mini LED Quantum TV, I thought the big story was that Vizio was back and that it had a quantum-dot TV for under $398 - the cheapest on the market. Vizio's been pretty quiet since it was acquired by Walmart in 2024, so putting out a TV with […]

submitted by /u/itachi_amaterasu [link] [留言]

If you have ever wired up a cellular modem, a WiFi module, or a Bluetooth radio and typed something like AT+CGMR into a serial terminal, you have used a command language that is older than most of the engineers using it. The humble AT command set that still configures a huge share of today's connected hardware was born in 1981 , with a device called the Hayes Smartmodem. Four decades and billions of devices later, it refuses to die, and that longevity has a lesson in it for anyone building embedded systems. What AT actually stands for When Dennis Hayes and his company released the Hayes Smartmodem 300 in 1981, they faced a small but real design problem: how does a computer tell a modem the difference between a command to the modem and data to be sent down the phone line ? Their answer was an attention sequence. Every command line began with the two letters AT , short for attention , which told the modem to wake up and listen to what followed. ATD dialled a number, ATH hung up, and so on. It was readable, it was easy to implement on the microcontrollers of the day, and crucially you could type it by hand to debug a link. That simplicity is exactly why it spread. Competing modem makers cloned the Hayes command set to stay compatible, it became a de facto industry standard, and later it was formally captured in telecom standards. A convention that started as one company's pragmatic shortcut turned into the lingua franca of getting a device onto a network. From phone lines to the Internet of Things Here is the part that surprises people. The AT command set never retired when dial-up modems did. It quietly migrated into the components that make modern IoT possible. Cellular modules that put a device on a 4G or LTE network, from vendors like Quectel, SIMCom, and u-blox, are almost universally driven by AT commands. Classic Bluetooth and many WiFi modules expose an AT interface too. Even the ESP8266 and ESP32, the microcontrollers behind an enormous number of hobby and com

I am joining a small ~10 person startup in SF next week as a full time W2 employee. I am a software dev. The work is in a very regulated space (ITAR/ SOC2/etc) type stuff. My manager (who is the CTO) texted me to bring my personal laptop in on the first day. This already seems like a red-flag and if needed I will not install any software or visit any sites beyond payroll. How should I handle this situation if they refuse to provide me equipment. This is a in-person role.

The Ikko MindOne Pro is delightfully small. I keep calling it a square phone, which isn't quite right; the screen is square, but the phone itself is slightly rectangular. The camera flips up so you can use it for selfies - you can even open it partway to use as a stand or a kind […]

Apple built a tool for people with cognitive disabilities, but I accidentally discovered it’s also the best kids’ phone setup no one is talking about—not even Apple.