Archive for the ‘DSP’ Category

Picture of the day

Could DSP produce some sort of modern art on some occasion ? Do you want to reproduce that ? Well, here is the recipe … Get a function generator and set the signal pattern to ramp, sweep frequencies from 80 to 90 Hz with 0.1 Hz steps every second. Connect the output to PlainDSP* and starting […]

Random number generator (Part 1)

Part 1, 2, 3 As I was stumbling the web looking for advanced information on thermal noise, I found some very interesting papers on RNGs, aka Random Number Generators. These devices feature hardware components which are responsible for a generating unpredictable random numbers ! This is a very interesting matter as it involves physics, electronics, […]

Publication of the day

Raymond McNamara from the NUI Galway committed his final year works to “Embedded Implementation of Embedded Algorithms of Power System Monitoring” Quality of AC power is definitely a contemporary problem. Many disturbances are generated by the variety of power sources including, and the list is non-exhaustive, solar power, wind power, hydroelectric power. Harmonic frequencies in the […]

Publication of the day

Deni PETAK from the University of Electronics of Zagreb wrote this thesis which includes references to arduinoos FFT . “In this work will be implemented two versions of DFT transformation and non-recursive (FIR) filters. One version has been developed in MATLAB software tool using Simulink models and Embedded Coder package, while the other hand is written in the C / […]

Publication of the day

Students from the Vaughn College, Flushing, NY, USA published a very interesting paper  on Aid Device for Deaf Drivers. [Download here]. They use FFT in order to extract specific sounds such as honks from a noisy environment in order to trigger a vibrating device located in the drivers’s seat. As they used some of the information published on arduinoos.com, […]

PlainDSP plotter

PlainDSP plotter or From figures to pictures Thanks to a small yet powerful piece of Processing code which plugs immediately with PlainDSP library example sketches (wave plotter and spectrum plotter). More on this application on plaindsp web site

Publication of the day

We are glad to read that the PlainDSP kit is used in many, many different types of applications and many, many various places around the world.This publication, along with pending ones, bring the proof that open source based applications can be really powerful and regarded as serious games. Check this awesome insect detection based on […]

Meet us at the Gamer Assembly

HL2 group is now the team behind Arduinoos. We are very much involved in the development of local and national initiatives in the world of open data, open software and open hardware. The team co-funded QuaiLab a very active FabLab which has been selected for managing a Maker Assembly aside the now famous Gamer Assy. So, you […]

Doppler Effect

Have you ever wonder why the sound from the honk of a car changes as the car travels next to you. While in the same time, the driver of this same car swears that the sound of his honk did not change a bit while he was sitting in the car! Who is right? Well, have […]

Extremely Low Frequency Electro Magnetic Field Sensing (Part 5)

Part 1, 2, 3, 4, 5 Time for upgrade. The pretty popular ELFEMF posts were prepared before the obsolescence of PlainADC and PlainFFT libraries.  Next is the revised code for the detection of Extremely Low Frequency Electromagnetic Fields which is compatible with PlainDSP library. So simple and yet powerful application! Enjoy. /* MicroELF_EMF: Electrical radiation measurement Revision 03 Applicable license […]