Category: How To

Changing a Bluetooth Device Address on Raspberry Pi

Posted on by max

This post shows how to change Bluetooth device address on Raspberry Pi. Bluetooth device address (aka BD_ADDR, Bluetooth MAC address) is a 48-bit identifier assigned to each Bluetooth chip. Whether it can be changed is depends on each chip. Fortunately, Raspberry Pi’s on-board Bluetooth chip (Cypress/Broadcom) allows device address change.   Assumptions Raspberry Pi board with on-board… Continue reading “Changing a Bluetooth Device Address on Raspberry Pi” →

Qt Creator Cross Compiling Environment for Raspbian Stretch using QtRpi

Posted on by max

This post shows how to create Qt Creator cross development environment on Ubuntu PC for Raspbian Stretch by using QtRpi. Although QtRpi does not officially support Raspbian Stretch [1], additional few steps make it possible to create the cross development environment for Stretch. (For Raspbian Jessie, please see this post.)   Contents – Assumptions – Steps 1. Host Preparation (Ubuntu) 2.… Continue reading “Qt Creator Cross Compiling Environment for Raspbian Stretch using QtRpi” →

Enabling Equalizer on Raspberry Pi using ALSA equal Plugin

Posted on by max

This post shows how to setup a system wide equalizer on Raspberry Pi using ALSA equal plugin. Below are my setup. Raspberry Pi3 B+ with Raspbian Stretch (2018 April version) 3.5 mm plug Speaker   Contents – Assumptions – Steps 1. Equalizer Plugin Installation 2. ALSA Configuration 3. Play audio 4. Verify Equalizer – Notes – Reference  … Continue reading “Enabling Equalizer on Raspberry Pi using ALSA equal Plugin” →

Streaming Bluetooth Audio from Phone to Raspberry Pi using ALSA

Posted on by max

Update (Jan 8, 2020): Step 1 has been updated to fix codebay and elba’s problems based on peacekunov’s feedback (Thanks!). Please see the comments for details. Update (May 22, 2019): Steps to manually enable A2DP sink role has been added based on Wolfgang and John’s feedback. (Step 1). This post shows steps to setup Bluetooth audio… Continue reading “Streaming Bluetooth Audio from Phone to Raspberry Pi using ALSA” →

Enabling Equalizer on Handsfree Sending Audio with ALSA equal plugin

Posted on by max

This post shows steps to enable equalizer on Bluetooth handsfree (HFP) sending audio by using ALSA equal plugin.   Contents – Prerequisites – Steps 1. Equalizer Plugin Installation 2. ALSA Configuration 3. PulseAudio Configuration 4. Connect your phone and make a call 5. Adjust equalizer – Reference   Prerequisites Bluetooth Handsfree profile needs to be… Continue reading “Enabling Equalizer on Handsfree Sending Audio with ALSA equal plugin” →