Random-access memory (RAM)

It's better to have as much as possible.

Sony VAIO Laptop

Good performance.

Windows 7

Today the most common Operating System (OS).

Power switch on motherboard

Today it comes with almost every motherboard.

Graetz

AC to DC converter on board.

Pages

Sunday, February 11, 2018

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 [7]: How To Create Polygon Clearance RULE 



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 charged battery is about 24 hour constant playing.
AC plug and 2x 5V USB connectors are on the back side for charging MP3,Smartphone etc.
Design was made in SolidWorks 2016, files will be available on request.

Price list:
  • wood - MDF 16mm  - 0.61m2 - 7$
  • cutting to requested size -  2$
  • speaker corners 8x  - 10$
  • wood screws 30x - 5$ 
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TOTAL:  24$






Battery holder

Inside the box



Battery charger on the right side



Finished BoomBox coverd with speaker fabric