sound

TURN YOUR SMARTPHONE TO A DSLR WITH THE PICTAR PRO

TURN YOUR SMARTPHONE TO A DSLR WITH THE PICTAR PRO

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 […]

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Measuring Refrigerant Gases Sound Speed Using Arduino and App Inventor 2

Measuring Refrigerant Gases Sound Speed Using Arduino and App Inventor 2

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

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Arduino Audio Sound Level Meter

Arduino Audio Sound Level Meter

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

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LISTENING TO THE SOUNDS OF AN 1960S MILITARY COMPUTER

LISTENING TO THE SOUNDS OF AN 1960S MILITARY COMPUTER

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

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PNG IMAGE DECODING LIBRARY DOES IT WITH MINIMAL RAM 1

PNG IMAGE DECODING LIBRARY DOES IT WITH MINIMAL RAM

Want to display a PNG file on a display attached to an Arduino or other microcontroller board? You’ll want to look at [Larry Bank]’s PNGdec, the Arduino-friendly PNG decoder library which makes it much easier to work with PNG files on your chosen microcontroller. The PNG image format supports useful features like lossless compression, and was generally

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