![]() Drew liked Spark erosion: Detailed view, simple machinery.Drew liked Programmable Precision Resistor.Dan Julio has added a new log for weeBell - personal central office for POTS phones.Gregory wrote a comment on Sound of Speed.Gregory has updated details to Sound of Speed.hanneshorstmann22 liked OMOTE - DIY Universal Remote.hanneshorstmann22 liked Felini - Revolutionary Pocket-Sized Electronic Lab.sjm4306 liked eye2see - Tiny Symbolic Debugger for all Arduinos*.Erik on Automatic Transfer Switch Keeps Internet Online.Dubious on Turning A Window Air Conditioning Unit Into Whole-House AC Mannajue Mechanical Light Up Keyboard with LED Backlit, Typewriter Style Gaming Keyboard with 104-Key Blue Switch Round Keycaps, Retro Steampunk Keyboard.Pat on ESA’s Euclid Space Telescope And The Quest For Dark Energy.Teukka on Cook Up A Yoke In Five Minutes.Paul on Turning A Window Air Conditioning Unit Into Whole-House AC.PPJ on Ask Hackaday: What’s The Deal With Humanoid Robots?.TraceSpazer on Would We Recognize Extraterrestrial Technology If We Saw It?.Andrzej on ESA’s Euclid Space Telescope And The Quest For Dark Energy.Steven-X on Ask Hackaday: What’s The Deal With Humanoid Robots?.ddss on A Usable Arduino Debugging Tool.This Week In Security: Zenbleed, Web Integrity, And More! 9 Comments Posted in Peripherals Hacks Tagged audio, bell, keyboard, mechanical keyboard, noise, solenoid, sound, Teensy, typewriter, usb Post navigation Be careful with noisy mechanical keyboards, though, as the sounds the keys produce can sometimes be decoded to determine what the user is typing. The source code for the build can be found on the project’s GitHub page and there’s also a video of this machine in action here as well. ![]() notes that this could be pushed to the extreme by running a much larger solenoid powered by mains electricity, but since this was more of a proof-of-concept demonstration for some coworkers the smaller solenoid was used instead. There’s also a bell inside that rings when the enter key is pressed, similar to the return carriage notification for typewriters, and as an additional touch an audio amplifier with attached speaker plays the Mario power-up sound whenever the caps lock key is pressed. This machine, based on a Teensy microcontroller, sits between any USB keyboard and its host computer, intercepting keystrokes and using a small solenoid to tap on a block of wood every time a keystroke is detected. This started as a joke among and some coworkers, who were already teasing about the distinct sound of the mechanical keyboard. Of course some prefer to go the other direction with it as well, omitting the foam and installing keys with a more noticeable click, and still others go even further than that by building a separate machine to make their keyboard activity as disruptive as it could possibly be. The size and layout of the keyboard is the first thing to figure out, and then switches, keycaps, and then a bunch of other customizations inside the keyboard like the mounting plate and whether or not to add foam strips and other sound- and vibration-deadening features. When it comes to mechanical keyboards, there’s no end to the amount of customization that can be done. ![]()
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