Arduino

A New Wireless Hack Can Unlock 100 Million Volkswagens | WIRED

A New Wireless Hack Can Unlock 100 Million Volkswagens https://www.wired.com/2016/08/oh-good-new-hack-can-unlock-100-million-volkswagens/ In 2013, when University of Birmingham computer scientist Flavio Garcia and a team of researchers were preparing to reveal a vulnerability that allowed them to start the ignition of millions of Volkswagen cars without keys but were hit with lawsuit to delay publication. Now, a →

WS2812 addressable LEDs test

RGB LEDs are awesome – especially the new, fancy ones with the WS2812 RGB LED driver. These LEDs can be individually controlled to display red, green, and blue, but interfacing them with a microcontroller or computer. To test controlling WS2812 RGB LEDs I bought a cheap addressable LED strip. An addressable RGB LED strip is →

From DMX-512 to ArtNet

Yesterday I posted about DMX-512 dimmer. DMX-512 is a lighting industry standard way of controlling lighting equipment.DMX-512 allows for one controller (like a lighting desk or computer) to control many lights from many manufacturers. DMX-512 fundamentally provides 512 channels of 8-bit resolution (0-255) level control(which constitue a DMX ‘universe’) using serial  RS-485 communications at 250 →

SSR teardown

A solid state relay (SSR) is an industrial component used for interfacing low voltage control signals to high current mains voltage loads. The SSR may be designed to switch either AC or DC to the load. It serves the same function as an electromechanical relay, but has no moving parts. You can control SSRs easily →