Archive for September 2021

SDI, HD-SDI, 3G-SDI, 6G-SDI and 12G-SDI

SDI is a one-way, multiplexed protocol designed to carry the highest quality video, audio and metadata over a coaxial cable or fiber. SDI is a professional video signal that is preferred in production environments because of its longer range (up to 300 feet) and reliability. If you’re in an environment in which your cable could

Karhu Active Pulse teardown

Karhu Active Pulse (W311) was a fitness tracker product that was sold cheaply few years ago. It was quite comfortable on the wrist the UFit application running on Android was just fine (not very good or bad). Most functions go on by pressing that white circle (pulse, sleep monitoring) for about three seconds. You can

HKL Bluetooth beacons and API

I have wondered what the mysterious candy-box-like boxes that have appeared on bus stop signs in Helsinki Finland. HSL has installed at a total of about 1700 of this kind of boxes to bus and tram stops, as well as on buses and trams. They are also coming to metro stations. These small boxed are