Category Archives: EV3 Operating Systems (Firmware)

LEGO Mindstorms EV3 Audio Streamed via Bluetooth Audio

Whilst displaying my Robots at a major Exhibition, I got to thinking that it would be great to pipe the EV3’s Audio to a Bluetooth Speaker, so my robot can be heard among the noise of a crowd.
Here are my notes so far on getting started with Connecting a LEGO Mindstorms EV3 Brick to a Bluetooth Audio Speaker:

  • Debian jessie is using BlueZ 5 and PluseAudio 5, which are fairly new. There were major breaking changes in these versions, so most stuff you find on the Internet will be for BlueZ 4/PulseAudio 4, so it does not work at all, so watch out.
  • BlueZ 5 dropped support for alsa [1], so the solution for now (until someone updates some bluez-alsa project for BlueZ 5) is to use PulseAudio.
  • PulseAudio 5 only supports the A2DP profile and not HSP/HFP [2] (although it his under development [3]).

Lets Start:

EV3 Brick Firmware Update Process Fails

EV3-Update-Failure

What to do if your EV3 Brick stops working during the firmware update process.

If for some reason your EV3 Brick stops working during the firmware update process, you will need to manually update the firmware by doing the following (the EV3 Brick still needs a USB connection to your computer and the EV3 Software Running on you Computer):

LEGO Mindstorms EV3 Ball Catching Robot.

EV3 Ball Catching Robot
This robot is a very clever design using the Mindsensors NXTCam-v4. Actually two of them for stereo vision. The instantaneous response of the Delta Robot design for catching the ball is outstanding choice by the owner Dillon Sharlet!

LEGO Mindstorms EV3 Alternative Wi-Fi Dongles

Before I start on LEGO Mindstorms EV3 Alternative Wi-Fi Dongles, I came across a solution to the issue that arises with any Wi-Fi Dongle you use with your EV3 Brick. That is, any Dongle connected will stick out from the side of the brick, getting in the road of everything and allowing it to be easily to knocked from the EV3 Brick’s USB Socket.



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