Chronos hacking update

JP Norair has been hacking away with the TI 433 MHz Chronos. My project is OpenTag, which is a 433 MHz centric IoT/M2M stack. It’s 433-centric because it implements DASH7 and because it makes design assumptions that multihop is not of great importance (at 433 MHz, it certainly isn’t). You can check the wiki, which […]

RS-485 and Arduino

As seen in the above illustration from National Instruments, RS-485 ports are identical in appearance to RS-232 but with different pin assignments. You will not find them on contemporary home computer hardware, and they are only rarely seen on legacy machines. They are, however, found on various types of commercial computer and telecom equipment and […]