Bluetooth Audio build

Community Projects
1

I have the following items

  1. Odroid C4

  2. 7 Inch Touch Screen

  3. Wifi Module

I want to build a portable box with these items. What I want to put in for speakers is a 6 to 8 Inch Sub, 2 Mids, and 2 tweeters.

My objective is to have it connect to bluetooth. I want it to be AC and DC, so when no AC, switch to DC but when AC plugged in, charge battery.

What parts do I need from Sparkfun to make this happen?

2

I don’t think you’ll get any ready- made bluetooth module running at both AC and DC. Rather, you may have to develope your own system using a Bluetooth module plus some accessories like ac-dc adapters, battery chargers, relay modules etc…

3

I was thinking some form of a step down or voltage regulator to convert the AC when plugged in. This could putout the 3 to 5 volt needed for the board.

4

At first, you’ll need to convert the AC voltage to DC. Then you may need to step that down. If you use a DC adapter, you’ll get 5V DC output directly from 220V /110V AC. If your bluetooth module runs at 5V power supply, you can use the 5V DC. If your module runs at 3.3V, you’ll need to use a buck module to convert the voltage from 5V to 3.3V.