The restored Kurt in the Canadian National War Museum. So it was with a recent look at an unmanned weather station buoy from the 1960s, which took us on a link to a much earlier automated weather station. Sometimes when researching one Hackaday story we as writers stumble upon the one train of thought that leads to another. Who?” → Posted in Hackaday Columns, History Tagged am, canadian, fessenden, history, radio In 1906, John Fleming (who gave us tubes that are sometimes still called Fleming valves) wrote that “a simple sine-curve would not be likely to produce the required effect.” That was in 1906, five years after Fessenden’s patent.Ĭontinue reading “You All Know Reginald Fessenden. This was unpopular at the time because most thought the spark was necessary to generate enough energy. He patented transmitting with a continuous wave instead of a spark, which made modern radio practical. However, Fessenden was the first man to make a two-way transatlantic radio contact (Marconi’s was one way) and he was a pioneer in using voice over the radio. Unlike Colpitts and Hartley we don’t have anything named after him. That’s a shame because he was the first to do something that most of us do every day.įew know this Canadian inventor’s name even though he developed quite a few innovations. Who do did you think of? Marconi? Tesla? Armstrong? Hertz? Perhaps Sarnoff? We bet only a handful would have said Reginald Fessenden. Quick, name someone influential in the history of radio. We like the approach, and we can’t help but think of other uses for glow-in-the-dark displays.Ĭontinue reading “Persistence Of Phosphorescence Clock Displays YouTube Stats Too” → Posted in clock hacks Tagged clock, display, dot matrix, ESP8266, glow in the dark, ntp, phosphor, phosphorescence, uv, UV LED, youtube We’ve seen “persistence of phosphorescence” clocks before, but not as good looking and legible as this one. An ESP8266 takes care of driving the display and fetching NTP time and YouTube stats. The display is built up to two rows of 16 characters by the time it rotates into view, and the effect seems to last for quite a while. The LEDs are turned on as the glow-in-the-dark surface passes over them, charging up a row of spots. The idea is to cover a PVC pipe with phosphorescent tape and rotate it past a row of 100 UV LEDs. Looking for an eye-catching and unique way to display the time and date? Want the flexibility to add other critical information, like the number of YouTube subs you’ve got? Care to be able to read it from half a block away, at least at night? Then this scrolling glow-in-the-dark dot-matrix display could be right up your alley.īuilding on his previous Morse code transcriber using a similar display, took the concept and went big. How about learning a piano song?Ĭontinue reading “Medium Machine Mediates Microcontroller Messages” → Posted in Microcontrollers, The Hackaday Prize Tagged 2018 Hackaday Prize, aluminum, information, learning, medium machine, pattern, style, teaching, TENS, wood Users can be programmed with a Morse code message or the secret knock to open an attic library or play a little tune. This project draws inspiration from the novel which became a movie. If this sounds like some memory cache, you are absolutely correct. After repeating the pattern a few times, the users should be able to recite it back on command even if they aren’t aware of what it means. Electrical impulses trigger the muscles which press the button. Users place their forearm across two aluminum electrodes mounted on a tasteful wooden platform and extend a single finger over a button. His Medium Machine leverages a TENS unit to activate forearm muscles in a pattern programmed into an Arduino. Tapping into some nerves farther from our central wetware is possible and shows us his stylish machine for implanting a pattern into our brains without actively having to memorize anything. Connecting computers to human brains is currently limited to the scope of science fiction and a few cutting-edge laboratories.
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