Where I live, from spring to autumn we have to compete for territory against tiger mosquito. Local stores offer a impressive list of anti mosquito devices, candles, including sophisticated traps sold a few hundred euros, I even found one sold 2000€ – this give you an idea of how desperate people are to get rid […]
Most vacuum tubes need about 6.3V high supply plus filament voltage to operate. Running at 3.3V inclusively of the filament voltage, the new vacuum tube amplifier from Albert van Dalen has proven it possible to have one with the capacity to operate on an entirely low power supply voltage and still work well. To be able to
A team of researchers at the ‘Georgia Institute of Technology’ has come up with a non-invasive sensor-in-a-chip that records details of the heartbeat, respiration rates, and lung sounds. It even tracks the wearer’s physical activities, such as walking. The signals are recorded in sync, potentially giving healthcare workers a detailed overview of a patient’s heart and lungs.
ROHM recently announced the AEC-Q100 qualified 2.8W output Class AB monaural speaker amplifiers the BD783xxEFJ-M series (BD78306EFJ-M, BD78310EFJ-M and BD78326EFJ-M) ideal for instrument clusters – used in vehicles equipped with autonomous driving and ADAS. In recent years, technological innovations in the automotive field – such as autonomous driving and ADAS – require a greater variety of sounds, such
The recent moves by Sonos can only be explained as targets towards expanding its connected ecosystem of smart devices and beyond. The wireless speaker company from Santa Barbara California, sometime last year acquired a French company that provides embedded assistants and interfaces for devices that run locally and offline. Of recent, the company set out to add to
This project is for the class ATLS 3300 at CU Boulder. Push buttons can make buzzers sound. Five buttons represented the tone C, D, E, F, G. There are two modes. The switch determines the mode and LEDs can indicate which mode we are in. In mode-1, the game handle can determine which buzzer sound.
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
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
In this Instructables tutorial, I will teach you how to make a simple 8 key piano with your Arduino. Supplies: Arduino Board Breadboard 10MΩ Resistor*8 Arduino mini box speaker Wires/Jumpers Tape Cardboard Tinfoil (optional) Hot glue gun Step 1: Gather Supplies Here is what you’ll need: Arduino Board Breadboard 10MΩ Resistor*8 (1MΩ Resistors work too)