1.6 KiB
Ronja
{ I was informed about this by a friend over email <3 ~drummyfish }
Ronja (reasonable optical near joint access) is a free/open KISS device for wireless connection of two devices using light (i.e. optical communication) and the ethernet protocol; it can be made at home, doesn't require any MCUs and as such can be considered a LRS/suckless alternative to traditional WiFi routers that are de-facto owned and controlled by corporations. It works full duplex up to the distance of 1400 meters with a speed of 10 Mbps, which is pretty amazing. One can also imagine Ronja as a kind of ethernet cable, just implemented with light instead of electricity. The design is released under GFDL. The project website is at http://ronja.twibright.com/.
There are many advantages in Ronja -- besides the mentioned KISS design and all its implications (freedom, repairability, cheap price, compatibility, ...), Ronja works with just an ethernet card, offers a stable and constant transmission speed with very low latency, can be potentially harder to spy on: besides visible light the transmission can also use infrared spectrum and narrow direction of transmission, as opposed to radiating to all directions, also the fast flickering is unnoticable by human or even normal cameras, therefore Ronja transmission is expensive to detect. Also note that some kind of encryption can be used above Ronja, if one so desires.