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Tag: Bluetooth

UGreen Bluetooth adapter 4.0

It is a new Bluetooth adapter which supports Bluetooth v4.0.

Let’s have a look at the package first. Oh, no. I still want to see the difference between Bluetooth 4.0 and its previous generation, such as v3.0, etc.

Bluetooth Specs

The specification of the adapter I got as below:

  • Chip model: CSR8510
  • Bluetooth version: 4.0
  • Data transfer frequency: 2.4GHz
  • Data transfer rate: up to 3Mbps
  • Operation range: up to 20 meters
  • Support USB 2.0 A male port
  • Support protocol: HFP1.5, HSP1.2, AVRCP1.4, A2DP1.2, FTP1.1
  • Compliant with Windows XP/Vista/7/8/10

The Package Content:

  • USB Bluetooth Adapter
  • Driver CD
  • Manual
  • Warranty Card

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Make a Bluetooth Speaker with Raspberry Pi with Bluetooth 4.0

I have tried to make a Bluetooth speaker with raspberry Pi three months ago. It was failed because of the old Bluetooth 2.0 USB device. It is too slow to get the smooth audio transferring.

Now I have a new Bluetooth 4.0 USB dongle.

I checked the information from the terminal window.

The procedure of installation is same as the post I posted before.

The dongle I got is $2.99 each. Good price. After I tested it, I can say Good quality.



Try to make a Bluetooth Speaker with Raspberry Pi

I  have an old model Raspberry Pi, Raspberry Pi Model B rev2, which I got five years ago. And I have a retired speakers. So I think, maybe I can make a bluetooth speaker system with this Pi.

I chaecked my inventory. Found two bluetooth USB dongles.  I think it is enough. After googling, I found this one.

Raspberry Pi Bluetooth+Airplay Audio Receiver combo

Go though the steps, I also read the comments of it. I did the following.

Step 1: Preparing the Pi

  • Download Raspbian image here. I download Raspbian Jessie Lite, the latest one for now.
  • Transfer image to sdcard using Win32 Disk Imager following instructions on
  • Insert sdcard and power up
  • Important! Expand file system to full 8GB capacity
  • Reboot
  • Login as user pi (password: raspberry). Please note that for the rest of this guide it is assumed that you are logged in as “pi”.
  • Update operating system and reboot:
sudo apt-get update
sudo apt-get -y upgrade
sudo reboot

Step 2: Installation

This script is from the comment of adenbeckitt. He modified the original script which is not compatible with Raspbian Jessie.

pi@raspberrypi ~ $ cd ~
pi@raspberrypi ~ $ git clone
pi@raspberrypi ~ $ cd raspberry-pi-audio-receiver-install/
pi@raspberrypi ~/raspberry-pi-audio-receiver-install $ ./
Device name: RpiAudio

Step 3: Testing

From my cellphone, I can pair the Bluetooth dongle on my Raspberry Pi. Name of the device is RpiAudio, which I entered on installation.

The pin code is default 0000.

See attached screenshots

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Fitbit syncing support more devices now

I use Fitbit almost one year. I need a USB device to synchronize data it collect. The USB device should work with PC and its program, Fitbit connect.

Now Fitbit syncing support more devices.

Including iPhone 5s, iPhone 5c, iPhone 4s, iPod Touch 5, iPad Mini, etc.

Most important news for me is that it is supporting Nexus 7 (2013) now.


It means I don’t have to turn on my PC and sit beside it to wait the data synchronizing.  I can play my favorite games,Jewel Mania, Fragger, Candy Crush, or Angry Birds, the data syncing is done without further action.


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