Author: max

Creating AltBeacon with Raspberry Pi using BlueZ Example Code (updated)

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This post shows steps to create an AltBeacon [1] with Raspberry Pi, by modifying BlueZ BLE Advertisement example code (i.e. “example-advertisement“). *If you want to create Apple’s iBeacon [2], please see this post.   Prerequisites (parentheses indicate my environment) Raspberry Pi (Raspberry Pi4 B with Raspbian Buster 2019-06-20) Internet access To download BlueZ example code. Here… Continue reading “Creating AltBeacon with Raspberry Pi using BlueZ Example Code (updated)” →

Creating iBeacon with Raspberry Pi using BlueZ Example Code (updated)

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This post shows steps to create an iBeacon with Raspberry Pi, by modifying BlueZ BLE Advertisement example code (i.e. “example-advertisement“). Note: Even though it uses Bluetooth Low Energy standard, iBeacon is Apple’s proprietary protocol and making/deploying iBeacon devices requires the license from Apple [1]. The scope of this post is limited to getting familiar with… Continue reading “Creating iBeacon with Raspberry Pi using BlueZ Example Code (updated)” →

Setting Up I2C Serial Communication on Raspberry Pi

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This post shows steps to setup I2C serial communication [1] on Raspberry Pi with an I2C peripheral device. I’ll use a temperature and humidity sensor as an example of I2C peripheral. The goal is to read those sensors value on Raspberry Pi.   Assumptions I assume that you already installed Raspbian OS on your Pi, if not,… Continue reading “Setting Up I2C Serial Communication on Raspberry Pi” →

Showing Album Cover Art Images for Bluetooth Audio

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In the previous post, I was able to show song title, artist name, and album name of Bluetooth audio. Then, I thought it would be nice if the album cover art images could be displayed too. Specification wise, transferring cover art over Bluetooth is supported since AVRCP 1.6 [1], but unfortunately it’s not widely implemented… Continue reading “Showing Album Cover Art Images for Bluetooth Audio” →

Controlling Bluetooth Audio on Raspberry Pi

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Update (April 21, 2020): Volume control support added. This post shows steps to control playback status of Bluetooth audio which is streamed from a connected phone (or any Bluetooth capable media player). The goal is to enable below. Playback control (play, pause, next/previous song, and volume control) Music information display in real time (song title, artist… Continue reading “Controlling Bluetooth Audio on Raspberry Pi” →