Voltlog #78 – 2x25W Bluetooth 4.1 Stereo Amplifier TDA7492P

In this episode we are going to build a bluetooth speaker amplifier based on the TDA7492P class D audio amplifier coupled with a Bluetooth 4 module. We are not actually going to build the amplifier module because we can get that from China, very affordable, it only costs around $12 shipped which is way less that it would cost us to buy the bluetooth module and the TDA7492P individually not to mention the cost of fabricating a PCB of this size.

So we are actually going to use this module and build the final product with a nice enclosure and a suitable external power supply

Here are some links for the parts used to build this project:

Wiring diagram below:

Voltlog #76 – InTheMail

This what happens when I left myself on a shopping spree, you get a month’s worth of InTheMail episodes. So let’s get started on the 4th episode in a row showing the stuff I get from China.

Here is a list with the items shown in this video:

  • Brushless Blower Fan 12V 5015S
  • Brushless Blower Fan 5V 6015S
  • Cooling Fan 5V 2 Pin 50x50x10mm
  • Fan Grill Guard 50mm
  • Aluminium Heatsink 150x60x25mm
  • TO-220 Aluminum Heatsink 34x12x30mm
  • 100W Wire Wound Aluminium Housing Resistor
  • 200x175x70mm Plastic Enclosure For Instrument
  • 170x130x75mm Metal Enclosure For Instrument
  • Rubber Feet Self Adhesive 15mm
  • LM2596 DC-DC Step-Down Converter Module
  • XL6009 Buck-Boost DC-DC Converter
  • 10A BMS 3S Battery Protection Module
  • Zener Diode Assortment – Through Hole
  • Zener Diode Assortment – SMD
  • PT4115 LED Driver IC

Links for all of the items will be in the video description on youtube.