Most of us have probably by now seen the SawStop brand of self-stopping table saw, which detects when something meatier than wood has the bad taste to touch the spinning blade, more or less instantly stopping it and preventing sudden traumatic amputations. It’s an outstanding idea, and we’d love to see the technology built into […]
HOMEMADE SAWSTOP ATTACHMENT IS JUST ABOUT AS SKETCHY AS IT SOUNDS Read More »
Description Clap switch/Sound-activated switch designed around op-amp, flip-flop and popular 555 IC. Switch avoids false triggering by using 2-clap sound. Clapping sound is received by a microphone, the microphone changes the sound wave to electrical wave which is further amplified by op-amp. 555 timer IC acts as mono-stable multi-vibrator then flip-flop changes the state of
Sound Activated Switch Read More »
Mobile photography is fast growing beyond a hobby or a way for people to capture important moments. Thanks to the week-on-week breakthroughs and improvements being made on the camera by the phone manufacturers, it is now becoming a mainstream method of documenting visual information, with both professionals (from Journalists to Magazine Photographers) and Semi-professionals (like
TURN YOUR SMARTPHONE TO A DSLR WITH THE PICTAR PRO Read More »
I have a major problem when it comes to talking on the phone or playing video games with my friends – I often get loud (that’s quite an understatement). Since I live with my parents, this often triggers my mother and she usually ends up barging into my room to tell me to quiet down.
DIY: ARDUINO SOUND SENSOR SYSTEM Read More »
We’re used to seeing the Raspberry Pi crop up in a wide range of the projects we show you here, but it’s fair to say that they usually feature some sort of operating system. There’s another way to use a Pi, more akin to using a microcontroller such as the Arduino: by programming it directly,
BARE METAL GIVES THIS PI SOME CLASSIC SYNTHS Read More »
The purpose of this Instructable is to build a portable device that can measure the speed of sound in refrigerant gases and use this data to identify them. The speed of sound in an ideal gas is related to two characteristics of the gaseous substance, its molecular mass (kg/mol) and its adiabatic constant (heat capacity ratio), or
Measuring Refrigerant Gases Sound Speed Using Arduino and App Inventor 2 Read More »
This is add-on of the audio amplifier project result which is introduced in other instructable. (https://www.instructables.com/PC-Speaker-Amplifier/) Usually many types of sound level meters are directly connected with input (or rarely output) signal lines of amplifier. But personally I’m thinking any electrical connections with amplifier circuit may surely degrade music playback quality by inserting some noises
Arduino Audio Sound Level Meter Read More »
This project was conceived of after I examined the types and styles of various off-the-shelf Metronomes. I am currently learning to play the piano and having a Metronome in order to keep time was necessary. I felt sure that I could build one based on a standard Arduino Uno R3 board. The resultant Metronome has
Restoring vintage computers is the favorite task of many hardware hackers. Retrocomputing probably makes you think of home computer brands like Commodore, Amiga, or Apple but [Erik Baigar] is deeply into collecting early military computers from the UK-based Elliott company. Earlier this year he made a detailed video that shows how he successfully brought an Elliott
LISTENING TO THE SOUNDS OF AN 1960S MILITARY COMPUTER Read More »
The Quadrivium EnsembleBot project is a mashup between old school musical instruments and the modern MIDI controlled world. Built by a small team over several years, these hand crafted instruments look and sound really nice. The electronics side of things is taken care of with a pile of Arduinos and off-the-shelf modules, but that doesn’t mean the
THE QUADRIVIUM ENSEMBLEBOT IS A LABOUR OF LOVE Read More »
