Mbed vs Arduino Uno speed of AD & DA Conversion

While i was playing with Mbed i noticed difference in speed of Analog to Digital & Digital to Analog Converter which is expected due to heart of Arduino (ATmega 328) and Mbed (32 bit ARM Cortex). With that in mind it's pretty obvious that Arduino it's not suitable for Digital Signal Processing while Mbed gives a bit more space to work as DSP filter, Audio mixer, effects...Here is some results directly from Tera Term and Arduino IDE Mbed: ****All...

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Altium Designer Tutorials

ALTIUM DESIGNER TUTORIAL SERIES Altium Designer Tutorial [1]: How To Make Default Template [SCH]  Altium Designer Tutorial [2]: How To Make Default Template [PCB] Altium Designer Tutorial [3]: How To Place Component Value On PCB Top Overlay  Altium Designer Tutorial [4]: How To Print PCB On Foil For Homemade Etching  Altium Designer Tutorial [5]: How To Create Polygon From Selected Primitives  Altium Designer Tutorial [6]: How To Define Board Shape  Altium Designer Tutorial...

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BoomBox v1.0

This is homemade designed speaker box, popular today as boombox. It has 2 LOW, MID (Monitor Audio) and 1 HIGH speaker. Amplifier is 25W with bluetooth on it (Ebay, Chinese crap)  which I will replace with my D class Amplifier (TPA3116d2) I posted earlier. For LOW  and HIGH speakers - passive crossover was used For power supply I use 12V /12Ah  Lead Acid Battery with charger implemented from old Laptop charger Running time with full...

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Coil Counter

This is new/old project - Coil Counter The idea of Coil Counter is to replace mechanical counting of turns with electronic device which will provide precise implementation of coil. Also I wanted to show that you can make diy, reliable&useful device with minimal costs, this device cost me around 20$. I have to mention that I just made electronic implementation while mechanical isn't finished yet. How it works? It works on quite simple way....

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D-Class Amplifier THD, Output Power, Efficiency - TPA3116d2

After quite a while I have some time to make few posts on the blog. I'm starting with Amplifier This is homemade D-Class Amplifier with IC TPA3116d2 (Texas Instrument). I made it for my new boombox but also to verify/confirm datasheet measurements/results. My interests were to check maximum Output Power, Total Harmonic Distortion (THD) and Efficiency. All results are shown below. As for PCB design I used Altium Designer 17, whole design...

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