How do I build this specific Blutooth speaker? It's all SOLVED

First off, I'm an electronics Luddite & retard. However, I'm trying. I drain the dead for a living (embalmer/Funeral Director) Therefore, I have little to no experience. I love learning! It's a passion similar to a narcotic. Ok-so - to the point..... I'm trying to build my own wireless bluetooth speaker. However, I've run into a roadblock. The author of the photo schematic that I'm using has confused me.

How do I connect this photo schematic:

To this schematic?:

Here are the complete directions

As I said before, I'm electronically challenged. So, the most basic answer is required.

Thank you in advance.

by autolytic
June 16, 2018

1 Answer

Answer by mikerogerswsm

Connect the output of the boost converter marked OUT+ and OUT- to the power input of the amplifier marked 12-36V + and -. Two wires, a red one for OUT + to 12-36V + and a black one for OUT- to 12-36V-. Hope this helps, mike.

ACCEPTED +1 vote
by mikerogerswsm
June 17, 2018


by autolytic
June 17, 2018

So I have another question-if you don't mind sharing your knowledge.

In the instructions, the author tells one to use 2X li-ion this:

I wanted to know, can I use a single 7.4 li-ion battery?

Thank you for your time.

by autolytic
June 18, 2018

The Li-ion batteries are being charged from usb, which is only 5V. The charging circuit shown can only charge a single cell (or several in parallel). The 7.4V battery contains two cells wired in series. Any charger used with these has to run from approx 10V and needs to be a 'charge balancing' type to ensure that the two cells are charged equally and don't get out of step. Better to use what is recommended.

by mikerogerswsm
June 18, 2018

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