Leon Anavi

In this short tutorial you will learn how to remotely connect to embedded Linux devices running Wayland and Weston using Remote Desktop Protocol (RDP) on GNU/Linux distributions built with the Yocto Project and OpenEmbedded. Exact getting started steps will be provided. We will discuss the advantages and the disadvantages of RDP as well as some troubleshooting guidelines.

Wayland is an open source display server protocol aiming to replace X11 on Linux devices with a modern and secure windowing system. As of today most of the popular desktop Linux distributions, including Ubuntu, Debian, Fedora, support Wayland out of the box. Wayland is also widely used on embedded devices and it is supported by hardware running Automotive Grade Linux (AGL), COVESA (previously GENIVI), WebOS, Tizen, postmarketOS, Jolla, etc.

There are many compositors compatible with Wayland. Weston is a simple reference compositor. Remote Desktop Protocol (RDP) is a proprietary network protocol with graphical user interface for connecting to other computers developed by Microsoft. It works on Weston with the screen-share.so plugin.

This lightning talk will provide the exact steps how to build from scratch core-image-weston, setup RDP and remotely accesss the embedded device using wlfreerdp (for Wayland) or xfreerdp (for X11) from a personal computer with GNU/Linux distribution in the same network. The examples will be based on the long-term support release kirkstone of the Yocto Project.

The talk is appropriate for anyone interested in remote access to embedded Linux devices. Previous experience is not required.

RAUC is a safe and secure open source software solution for A/B updates of embedded Linux devices. RAUC supports industry-leading build system: the Yocto Project and OpenEmbedded, Buildroot and PTXdist. Porting RAUC to a new device requires several advanced technical steps. Layer meta-rauc-community exists to speed up and simplify the integration process for Yocto and OpenEmbedded by providing examples for popular devices such as Rasperry Pi, Allwinner (Sunxi), NVIDIA Tegra and QEMU.

RAUC is a popular solution for A/B updates of embedded Linux devices because of its flexibility, safety and security features. It supports industry-leading build system: Yocto Project and OpenEmbedded, Buildroot and PTXdist. Upgrades are performed through RAUC bundles which can be installed either through the network or just using a USB stick.

To port RAUC to a new device, we need to go through several steps: setup appropriate bootloader like U-Boot, enable SquashFS in the Linux kernel configurations, use ext4 file system, create partitions and configure RAUC slots, generate certificates and setup bootloader environment configurations with a script to switch RAUC slots over upgrades. To simplify the getting started process of developers using RAUC with Yocto and OpenEmbedded in 2020 Leon Anavi created layer meta-rauc-community. In 2021 the layer was moved to the RAUC organization in GitHub. Initially it offered only Raspberry Pi support and over the time, thanks to numerous community contributions, the support was extended to more machines. As of the moment meta-rauc-community provides RAUC sample integrations for Raspberry Pi, Sunxi (Allwinner), QEMUx86 and NVIDIA Jetson TX2.

This presentation will provide a brief introduction to RAUC and will focus on layers meta-rauc and meta-rauc-community. We will go through the exact steps how build, flash and update an image using bitbake to the currently supported platforms. Furthermore we will discuss general guidelines for porting RAUC and adding new supported machines to meta-rauc-community in the future.

The talk is appropriate for anyone with basic knowledge about Linux. It will hopefully help other software developers in the community to overcame faster and easier similar technical difficulties while integrating the RAUC client on embedded Linux devices and hopefully contribute back to the Yocto/OpenEmbedded layer meta-rauc-community.

Homebridge is a lightweight NodeJS server that emulates Apple HomeKit API. Combined with versatile plugins it allows you to make any device Homekit-compatible. In the presentation you will understand how Homebridge works and how to integrated it in a custom embedded Linux distribution built with the Yocto Project and OpenEmbedded. We will go through the exact steps for leveraging the latest release of Poky, the reference system of the Yocto Project, with systemd, X11, openbox, surf web browser, nodejs, npm, Homebridge and some of its most popular plugins. Only open source software will be used, without any commercial licenses. Practical examples for home automation with Homebridge on Raspberry Pi and the new STM32MP1 development boards will be demonstrated. The end result is an embedded device mounted in rack with a DIN rail that provides simple and user-friendly way to manage and configure Homebridge out of the box. The talk is appropriate for beginners.

Homebridge is a lightweight NodeJS server that you can run on your home network and emulate Apple HomeKit API. Started more than 5 years ago and available at GitHub under Apache License 2.0, Homebridge has a large and vibrant open source community. Multiple plugins allow Homebridge to handle user's requests either via Siri or the Home app and this way to make any device Homekit-compatible. Raspberry Pi is the perfect platforms for hobbyists to install a local Homebridge instance. However, the installation of Homebridge on Raspbian requires numerous steps and despite the excellent tutorials, users without previous Linux experience face difficulties. Another disadvantage is that Raspbian is available only as 32-bit images which doesn’t use the full capabilities of the ARMv8 64-bit processors on Raspberry Pi 3 and 4. The Yocto Project and OpenEmbedded provide all required tools to create a custom Linux distribution that out of the box offers user-friendly experience for configuring Homebridge in just a few easy steps. In the this presentation we do a code review of meta-homebridge Yocto/OE layer and we will walk through the exact steps for creating a lightweight Linux distribution with graphical user interface and a web browser that acts like a kiosk. We will integrated and configure popular open source software tools such as the Linux kernel, systemd, X11, openbox, surf web browser, nodejs, npm and of course Homebridge. Thanks to the meta-raspberrypi BSP Yocto/OE layer we will be able to unleash the full power of Raspberry Pi 3 and 4 by building 64-bit images. At the end of the presentation demonstrations and tips for making an embedded device mounted in rack with a DIN rail will be shared. We will also mention the new STM32MP1 industrial grade development boards as alternatives of Raspberry Pi for this and similar projects in the maker community. This talk brings benefits to the ecosystems of several open source communities. It will spread the word about Homebridge and significantly improve the getting started experience for user. Practical examples for using the Yocto Project and OpenEmbedded for makers will be revealed. As part of the development efforts for meta-homebridge Yocto/OE, a couple of new recipes, surf (simple web browser) and stalonetray (X11 system tray), have been contributed to the upstream of meta-openembedded. The talk is appropriate for beginners. No previous experience is required. Hopefully, this presentation will encourage the audience to try out Homebridge and leverage their knowledge about the Yocto Project and OpenEmbedded with the example of this real-world entirely open source project.

The popularity of the open source hardware movement and IoT is constantly increasing. But is it worth making open source hardware using expensive proprietary software? Of course not!

In this presentation Leon Anavi will share his experience in developing IoT by designing printed circuit boards (PCB) with the free and open source EDA tool KiCAD, the open source hardware certification program of OSHWA, crowdfunding opportunities for low volume manufacturing and open source success stories for building a community. Practical examples based on the certified open source hardware development boards ANAVI Light Controller and ANAVI Thermometer will be provided. The talk also contains information about open source hardware licenses, KiCAD getting started guidelines, tips and tricks for avoiding common mistakes.

Always take with a pinch of salt anything that a software engineer like Leon says about hardware and in the same time have in mind that if he can do it, anyone can! Hopefully the talk will encourage more people to use KiCAD, join the open source hardware movement and certify their open source devices at OSHWA.

With the advance of free and open source technologies, designing printed circuit boards became more affordable and easy. Makers can cross boundaries and integrate together free and open source software with open source hardware. This presentation will provide several showcases of certified open source hardware Internet of Things developed as hobby projects by Leon Anavi and will share his first steps as a software engineer to using KiCAD for making his own printed circuit boards. Tips and tricks for avoiding common mistakes and recommendations for low volume manufacturing will be shared. For any open source project the commonly is always on first place. ANAVI Light Controller and ANAVI Thermometer are a couple of example for n entirely open source project that combines open source hardware with free and open source software. Both are made in Plovdiv, Bulgaria, certified by OSHWA as open source hardware devices and powered by ESP8266 (BG000005 and BG000017). Firmware written as an Arduino sketch allows easily to connect to a WiFi network and through the machine-to-machine protocol MQTT to the popular open source automation platform Home Assistant. The acrylic cases for both devices are designed with another open source tool – OpenSCAD. The fully open source nature of the projects quick attracted contributors. In just a couple of months, following a successful crowdfunding campaign at Crowd Supply, several people started to contribute to the sofware and hardware repositories of ANAVI Light Controller in GitHub. Furthermore the project inspired other people to develop their own open source boards based on similar design such as esp01-i2c-little-board by Nicolas Vion. The presentation is appropriate for beginners. No previous experience is required. Hopefully the talk will attract a wide range of professionals, hobbyists and students and will encourage them to use free and open source software for developing open source hardware. Furthermore the presentation will reveal the benefits of the open source hardware certification program by OSHWA.

Raspberry Pi, the most popular single board computer for hobbyists and students, is an affordable and widely used platform for retrogaming. Over the years the community has created numerous cool cases, add-on boards and peripherals for optimized gaming.

In this presentation you will learn how to use cutting edge free and open source technologies such as KiCAD and OpenSCAD to create a gamepad as a Raspberry Pi HAT (Hardware Attached on Top) with device-tree fragment for mapping the keys saved in an EEPROM connected via I2C. Exact steps for setting it up and playing retro games in emulators on RetroPie and Raspbian will be provided. Furthermore we will discuss the benefits of the open source hardware and the certification program of Open Source Hardware Association (OSHWA).

The presentation is appropriate for anyone interested in low-cost retrogaming and modern free and open source software technologies. No previous experience or hardware knowledge is required. Apart from retrogaming enthusiasts, the talk is appropriate for wide range of developers, makers, and students. Hopefully, the presentation will encourage the attendees to grab the soldering iron and start prototyping retrogaming compatible hardware for fun and profit.

Raspberry Pi, the most popular single board computer for hobbyists and students, is very affordable platform and it is a popular solution for retrogaming. Nowadays modern free and open source tools allows us to develop Raspberry Pi add-on boards to improve the gaming experience. Over the years the community has already created numerous awesome hardware projects for cases, add-on bards and peripheral optimized for retrogaming. The focus will be on providing guidelines and recommendations how to use the open source EDA software KiCAD to design open source hardware gamepad as a HAT (Hardware Attached-on Top) according to requirements of the Raspberry Pi foundation as well as a simple cases for laser cutting or 3D printing with another popular open source software tool OpenSCAD. Using practical examples related to retrogaming you will understand how to create device tree binary overlay for mapping keys and how to flash it in EEPROM attached to pin 27 of 28 of the Raspberry Pi header. Exact steps for setting up and using our do-it-yourself gamepad with popular GNU/Linux distributions RetroPie and Raspbian will be provided. Last but not least we will discuss the benefits of using open source hardware and the certification of the Open Source Hardware Association (OSHWA). The presentation is appropriate for anyone interested in low-cost retrogaming and modern free and open source software technologies. No previous experience or hardware knowledge is required. Apart from retrogaming enthusiasts, the talk is appropriate for wide range fo developers, makers, and students.

In this presentation you will learn the exact steps for using MQTT JSON Light component of the open source home automation platform Home Assistant for controlling lights through the machine-to-machine protocol MQTT. Practical examples for low cost devices combining together open source hardware with free and open source software will be revealed. The presentation will provide general overview of Home Assistant, details about the software integration of new devices to it through the MQTT protocol and open source MQTT brokers such as Mosquitto. We will do a code review of an open source Linux daemon application for Raspberry Pi, written in the C programming language and based on the Paho library for MQTT client and the piGPIO library used for pulse-width modulation (PWM) control of a RGB LED strip. We will compare it to an implementation of the same features for the microcontroller with WiFi ESP8266 written as a sketch for the Arduino environment. Furthermore, the presentation will include details about reading data from various sensors and their setup in Home Assistant.

Home Assistant is a popular open source home automation platform written in Python 3 and perfect to run on a Raspberry Pi. Out of the box is supports popular mass market Internet of Things such as IKEA Trådfri, Philips Hue, Google Assistant, Alexa / Amazon Echo, Nest, KODI and many more. Furthermore Home Assistant provides components for easy integration of Internet of Things through the machine-to-machine protocol MQTT. This presentation will focus on practical examples for using the MQTT JSON Light component for integrating two type of devices controlling 12V RGB LED strips: Raspberry Pi with the open source hardware add-on board ANAVI Light pHAT and the another open source hardware devices with ESP8266 - the cheap WiFi microcontroller compatible with the Arduino IDE. The printed circuit boards (PCB) of both hardware devices used in the examples are designed with free and open source software KiCAD that runs on GNU/Linux distributions. The focus of the presentation will be on the open source software that implements an MQTT client, connects to an open source MQTT broker such as Mosquitto and controls the lights of RGB LED strip through PWM. The exact steps for the integration of new devices in Home Assistant using MQTT will be revealed in details. The presentation is appropriate for open source enthusiasts interested in home automation, engineers, students and even beginners. No previous knowledges about Home Assistant or MQTT is required.

This presentation will reveal the exact steps for making a low-cost lightning solution that combines open source hardware with free and open source software. It will cover a wide range of topics from designing a printed circuit board with KiCAD to software support and integration with the popular open source home automation platform Home Assistant through the machine-to-machine protocol MQTT.

We will review the designing process of open source hardware embedded devices that control 12V RGB LED strips and collect data from I2C sensors for light, temperature, humidity, color and gesture recognition. We will compare and highlight the differences between the software implementation of MQTT client with brightness and color control of the lights using pulse-width modulation (PWM) on embedded Linux through an add-on board for Raspberry Pi and a device powered by the low-cost microcontroller with Wi-Fi ESP8266.

The talk will also provide information about open source hardware licenses, KiCAD getting started guidelines, tips for avoiding common hardware pitfalls and mistakes. Furthermore, we will discuss the challenges of prototyping and low-volume hardware manufacturing. The talk is appropriate for anyone interested in combining open source hardware with free and open source software. No previous knowledge is required. The presentation will try to encourage more people to grab the soldering iron and start prototyping entirely open source products.

The open source hardware movement is becoming more and more popular. In this presentation, Leon Anavi will share his experience how to use free and open source software for making high-quality entirely open source low-cost lighting solutions using 12V RGB LED strips.

Unlike Phillips Hue or IKEA Trådfri, the open source hardware lighting solutions are more flexible and developer friendly. They can be easily integrated with various free and open source software platforms for home automation such as Home Assistant. The practical examples in this presentation will be based on the open source hardware Raspberry Pi add-on board ANAVI Light pHAT available at GitHub under CC BY-SA 4.0 license and a work in progress device with ESP8266. Both devices have 2 layer printed circuit boards made with the free and open source software electronics design automation suite KiCAD. Tips for avoiding common pitfalls and mistakes as well as recommendations for optimization of the SMT and THT assembly with be shared.

Home Assistant is written in Python 3 and runs perfectly on a Raspberry Pi. Out of the box it supports popular mass market Internet of Things such as IKEA Trådfri, Philips Hue, Google Assistant, Alexa / Amazon Echo, Nest, KODI and many more. Furthermore it allows straight-forward integration of other embedded devices that support the machine-to-machine protocol MQTT using the so called MQTT JSON Light component. MQTT broker, such as the open source Mosquitto, is required to distribute the messages in real time among all hardware devices in the lighting solution.

The presentation is appropriate for open source enthusiasts, engineers, students and even beginners interested in combining open source hardware with free and open source software.

This presentation will provide guidelines how to create an open source hardware add-on board for the most popular single board computer Raspberry Pi using free and open source tools from scratch. Specifications of Raspberry Pi Foundation for HAT (Hardware Attached on Top) will be revealed in details. Leon Anavi has been developing an open source Raspberry Pi HAT for IoT for more than a year and now he will share his experience, including the common mistakes for a software engineer getting involved in hardware design and manufacturing. The presentation is appropriate for anyone interested in building entirely open source products that feature open source hardware and open source software. No previous experience or hardware knowledge is required. The main audience are developers, hobbyists, makers, and students. Hopefully the presentation will encourage them to grab a soldering iron and start prototyping their DIY open source device.

Raspberry Pi is the most popular single board computer among hobbyists and students. In 2014 Raspberry Pi Foundation released a specification for add-on boards called HAT (Hardware Attached on Top). Nowadays we are capable of making our own open source add boards following these specifications. In this presentation, Leon Anavi will share his experience in designing an open source hardware Raspberry Pi HAT and developing open source software for it using only free and open source tools such as KiCAD. Leon has been working on his Raspberry Pi HAT as a hobby project in his spare time for more than a year. In November 2016 his open source Raspberry Pi was successfully crowdfunded through IndieGoGo. Now he will explain the challenges and the common mistakes for a software engineer getting involved in hardware design and manufacturing. The presentation will reveal details about the technical specifications of Raspberry Pi HAT, the life cycle of entirely open source project and will provide getting started guidelines. The presentation is appropriate for anyone interested in open source hardware and open source software development. Previous experience or knowledge about hardware design is NOT required. Attendees can expect details about Raspberry Pi HAT technical specification, embedded Linux software development tips for Raspberry Pi, guidelines for hardware design and low cost manufacturing of prototypes or small volume PCB. This presentation will help software developers, hobbyists and students better understand the value of open source hardware and hopefully it will encourage them to a get a soldering iron and start prototyping add-on boards for their favorite Raspberry Pi. The presentation will be also useful to people interested in the concept of entirely open source projects that integrate open source hardware and software created with free and open source tools.

Tizen is an open source Linux based software platform for mobile, wearable and other embedded devices. In this talk you will learn how to build and port Tizen 3 to connected DIY (do it yourself) devices using industry standard tools provided by the Yocto Project and Openembedded. The presentation will also include practicals examples that demonstrate the flexibility of Yocto/OE to extend the Tizen distribution with your applications and new IoT (Internet of Things) features.

Tizen is an open source GNU/Linux based software platform for mobile, wearable and embedded devices as well as Internet of Things. Tizen:Common provides a generic development environment for Tizen 3 which key features include, Wayland, Weston, EFL UI/UX toolkit, and a web runtime for safely running standalone HTML5 apps.Yocto Project offers tools to easily expends features of Tizen:Common by creating layers for new profiles. This talk will focus the Tizen architecture and it will provide guidelines for creating and building new Tizen profiles, based on Tizen:Common, using the Yocto Project for devices with Intel or ARM processors. It will also provide information about hidden gems in Tizen on Yocto and practical examples for packaging and deploying HTML5 applications through Yocto recipes for the open source hardware development boards like Raspberry Pi 2 or HummingBoard (Freescale I.MX6 ARM SoC) or MinnowBoard Max (Intel).

Finally, since Tizen aims to become the OS of everything, we will illustrate this by extending Tizen Distro with new connectivity features provided by IoTivity library, the open source implementation of OpenInterConnect’s standard.

No previous experience with Tizen or the Yocto project is required. Attendees can expect to learn how to use Tizen on Yocto for building boot loader, Linux kernel and the Tizen software platform for various hardware architectures. Advanced techniques and practical examples for extending Tizen and adding new features will be shared.

Notice : This presentation will focus on TizenYocto while OIC’s IoTivity will be just mentioned as an example.

DIY: Build Linux kernel and Tizen platform image from scratch; create an open-source hardware device powered by SoC with Allwinner processors and boot Tizen on it.

Tizen is an open source Linux-based software platform for multiple device categories such as smartphones, tablets, personal computers, in-vehicle infotainment devices and smart TVs. Tizen is registered trademark of the Linux Foundation and it is governed by a Technical Steering Group composed by Samsung, Intel and other industry-leading companies.

Sunxi represents the family of ARM System on Chip (SoC) devices with Allwinner A10, A10s, A13, A20 and A31 processors. A variety of devices on the market relies on Allwinner ARM processors. Among them are the popular open-source hardware development boards OLinuXino which are designed and manufactured by Olimex as well as Cubieboard by cubieTech.

The talk will discuss the status of Tizen-sunxi - a community-driven project for porting Tizen to Allwinner devices as well as building a Tizen device based on open-source hardware components. The following topic will be briefly covered: * Assembling Tizen device using open-source components * Building Linux-sunxi and u-boot boot loader from scratch * Building Tizen platform image from scratch using GBS (git-build-system) * Preparing bootable Tizen microSD card * Booting Tizen and debugging through UART0

YouTube video of a homemade Tizen tablet: http://youtu.be/vMQmf4hype4