# Lvgl

Published articles for Lvgl.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## ESP-BIST in Action: A Self-Testing HMI using ESP32-P4

DevFeed: [ESP-BIST in Action: A Self-Testing HMI using ESP32-P4](<https://devfeed.tech/articles/esp-bist-in-action-a-self-testing-hmi-using-esp32-p4-13787.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/2026/08/esp-bist-motor-controller-hmi/>)

Author: John Lee

Published: 2026-08-22T00:00:00Z

Content type: tutorial

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [ESP32-P4](<https://devfeed.tech/topics/esp32-p4.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [Test coverage](<https://devfeed.tech/topics/coverage.md>), [Espressif](<https://devfeed.tech/topics/espressif.md>), [Microcontroller](<https://devfeed.tech/topics/microcontroller.md>), [RISC-V](<https://devfeed.tech/topics/riscv.md>), [boot](<https://devfeed.tech/topics/boot.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [display](<https://devfeed.tech/tags/display.md>), [esp32-p4](<https://devfeed.tech/tags/esp32-p4.md>), [espressif](<https://devfeed.tech/tags/espressif.md>), [hmi](<https://devfeed.tech/tags/hmi.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [modbus](<https://devfeed.tech/tags/modbus.md>), [risc-v](<https://devfeed.tech/tags/risc-v.md>), [safety](<https://devfeed.tech/tags/safety.md>), [startup](<https://devfeed.tech/tags/startup.md>), [test-coverage](<https://devfeed.tech/tags/test-coverage.md>), [testing](<https://devfeed.tech/tags/testing.md>)

### AI overview

This tutorial explains how ESP-BIST provides IEC 60730 Class B self-test coverage on Espressif SoCs. It demonstrates an ESP32-P4-powered HMI using an M5Stack Tab5, Modbus communication with a simulated motor controller, and an LVGL touchscreen. The article describes post-boot and runtime tests, safe-state handling, and Host Diagnostics using the low-power RISC-V core.

### Source excerpt

ESP-BIST brings IEC 60730 Class B self-test coverage to Espressif SoCs, and this article walks through what that actually means before putting it to work. Using an ESP32-P4-based M5Stack Tab5 as a Modbus HMI for a simulated motor controller, we show how a SoC that can prove its own health is a chip you can trust to draw a "safe" screen without lying about it.

## ESPHome 2026.8.0: Bluetooth on more chips than ever

DevFeed: [ESPHome 2026.8.0: Bluetooth on more chips than ever](<https://devfeed.tech/articles/esphome-2026-8-0-bluetooth-on-more-chips-than-ever-16717.md>)

Original publisher: [Read original article](<https://esphome.io/blog/2026/08/19/esphome-2026-8/>)

Author: Jesse Hills

Published: 2026-08-19T00:00:00Z

Content type: release

Language: en

Sources: [ESPHome - Smart Home Made Simple - Blog](<https://devfeed.tech/sources/esphome-smart-home-made-simple-blog.md>)

Topics: [esphome](<https://devfeed.tech/topics/esphome.md>), [Bluetooth](<https://devfeed.tech/topics/bluetooth.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Raspberry Pi](<https://devfeed.tech/topics/raspberry-pi.md>), [ESP32](<https://devfeed.tech/topics/esp32.md>), [Ethernet](<https://devfeed.tech/topics/ethernet.md>), [Modbus](<https://devfeed.tech/topics/modbus.md>), [ESP8266](<https://devfeed.tech/topics/esp8266.md>), [Lvgl](<https://devfeed.tech/topics/lvgl.md>)

Tags: [bluetooth](<https://devfeed.tech/tags/bluetooth.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esp8266](<https://devfeed.tech/tags/esp8266.md>), [esphome](<https://devfeed.tech/tags/esphome.md>), [ethernet](<https://devfeed.tech/tags/ethernet.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [modbus](<https://devfeed.tech/tags/modbus.md>), [networking](<https://devfeed.tech/tags/networking.md>), [raspberry-pi](<https://devfeed.tech/tags/raspberry-pi.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>)

### AI overview

ESPHome 2026.8.0 expands Bluetooth support beyond ESP32 through a platform-neutral BLE layer, adds Bluetooth Proxy support for more chips and Raspberry Pi Pico W, and introduces faster builds, combined Ethernet and WiFi configuration, Modbus changes, OTA signature verification, and other device and builder improvements.

### Source excerpt

ESPHome 2026.8.0 brings Bluetooth to more chips, dramatically faster builds, Ethernet and WiFi together, a major Modbus overhaul, and more.

## ESPHome 2026.6.0: Meet the new Device Builder

DevFeed: [ESPHome 2026.6.0: Meet the new Device Builder](<https://devfeed.tech/articles/esphome-2026-6-0-meet-the-new-device-builder-16710.md>)

Original publisher: [Read original article](<https://esphome.io/blog/2026/06/17/esphome-2026-6/>)

Author: Jesse Hills

Published: 2026-06-17T00:00:00Z

Content type: release

Language: en

Sources: [ESPHome - Smart Home Made Simple - Blog](<https://devfeed.tech/sources/esphome-smart-home-made-simple-blog.md>)

Topics: [esphome](<https://devfeed.tech/topics/esphome.md>), [dashboards](<https://devfeed.tech/topics/dashboards.md>), [ESP8266](<https://devfeed.tech/topics/esp8266.md>), [ui](<https://devfeed.tech/topics/ui.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [audio](<https://devfeed.tech/tags/audio.md>), [esp8266](<https://devfeed.tech/tags/esp8266.md>), [esphome](<https://devfeed.tech/tags/esphome.md>), [home-assistant](<https://devfeed.tech/tags/home-assistant.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>), [risc-v](<https://devfeed.tech/tags/risc-v.md>), [security](<https://devfeed.tech/tags/security.md>), [ui](<https://devfeed.tech/tags/ui.md>), [wifi](<https://devfeed.tech/tags/wifi.md>)

### AI overview

ESPHome 2026.6.0 retires the legacy in-tree dashboard and replaces it with ESPHome Device Builder 1.0.0. The release also raises default ESP8266 WiFi security to WPA2, improves SRAM reclamation and LVGL validation performance, modernizes the audio stack, and adds new IMU and USB-serial capabilities.

### Source excerpt

ESPHome 2026.6.0 retires the legacy dashboard for ESPHome Device Builder 1.0.0, raises ESP8266 WiFi security to WPA2, and modernizes the audio stack.

## ESPHome 2026.4.0: Faster ESP32 defaults and signed OTA

DevFeed: [ESPHome 2026.4.0: Faster ESP32 defaults and signed OTA](<https://devfeed.tech/articles/esphome-2026-4-0-faster-esp32-defaults-and-signed-ota-16708.md>)

Original publisher: [Read original article](<https://esphome.io/blog/2026/04/15/esphome-2026-4/>)

Author: Jesse Hills

Published: 2026-04-15T00:00:00Z

Content type: release

Language: en

Sources: [ESPHome - Smart Home Made Simple - Blog](<https://devfeed.tech/sources/esphome-smart-home-made-simple-blog.md>)

Topics: [ESP32](<https://devfeed.tech/topics/esp32.md>), [ESP8266](<https://devfeed.tech/topics/esp8266.md>), [Logging](<https://devfeed.tech/topics/logging.md>), [benchmarking](<https://devfeed.tech/topics/benchmarking.md>), [ESP-IDF](<https://devfeed.tech/topics/esp-idf.md>), [Lvgl](<https://devfeed.tech/topics/lvgl.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [benchmarking](<https://devfeed.tech/tags/benchmarking.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [esp-idf](<https://devfeed.tech/tags/esp-idf.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esp8266](<https://devfeed.tech/tags/esp8266.md>), [logging](<https://devfeed.tech/tags/logging.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [ota](<https://devfeed.tech/tags/ota.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>), [security](<https://devfeed.tech/tags/security.md>), [yaml](<https://devfeed.tech/tags/yaml.md>)

### AI overview

ESPHome 2026.4.0 increases ESP32 CPU frequency by default, adds signed OTA verification and custom partition tables, and improves performance across logging, configuration loading, Bluetooth proxying, Ethernet, and GPIO expanders. The release also adds an ESP8266 crash handler, LVGL 9.5.0, new components, and migration requirements for deprecated features.

### Source excerpt

ESPHome 2026.4.0 raises ESP32 CPU frequency by default, adds signed OTA and an ESP8266 crash handler, and speeds up state logging and config loading.

## ESPHome 2025.12.0: API action responses and HUB75 matrix displays

DevFeed: [ESPHome 2025.12.0: API action responses and HUB75 matrix displays](<https://devfeed.tech/articles/esphome-2025-12-0-api-action-responses-and-hub75-matrix-displays-16704.md>)

Original publisher: [Read original article](<https://esphome.io/blog/2025/12/17/esphome-2025-12/>)

Author: Jesse Hills

Published: 2025-12-17T00:00:00Z

Content type: release

Language: en

Sources: [ESPHome - Smart Home Made Simple - Blog](<https://devfeed.tech/sources/esphome-smart-home-made-simple-blog.md>)

Topics: [esphome](<https://devfeed.tech/topics/esphome.md>), [API](<https://devfeed.tech/topics/api.md>), [Home Assistant](<https://devfeed.tech/topics/home-assistant.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [Lvgl](<https://devfeed.tech/topics/lvgl.md>), [ESP32](<https://devfeed.tech/topics/esp32.md>), [ESP32-P4](<https://devfeed.tech/topics/esp32-p4.md>), [ESP32-S3](<https://devfeed.tech/topics/esp32-s3.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [api](<https://devfeed.tech/tags/api.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [display](<https://devfeed.tech/tags/display.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [esp32-p4](<https://devfeed.tech/tags/esp32-p4.md>), [esp32-s3](<https://devfeed.tech/tags/esp32-s3.md>), [home-assistant](<https://devfeed.tech/tags/home-assistant.md>), [inclusion](<https://devfeed.tech/tags/inclusion.md>), [led](<https://devfeed.tech/tags/led.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [releases](<https://devfeed.tech/tags/releases.md>), [usability](<https://devfeed.tech/tags/usability.md>), [usb](<https://devfeed.tech/tags/usb.md>)

### AI overview

ESPHome 2025.12.0 adds API action responses for bidirectional communication with Home Assistant, conditional package inclusion, HUB75 LED matrix display support, memory optimizations, and eight new components.

### Source excerpt

ESPHome 2025.12.0 introduces API action responses, conditional package inclusion, and HUB75 LED matrix display support, along with memory optimizations and eight new components.

## Developing User Interfaces for Custom Boards with ESP microcontrollers

DevFeed: [Developing User Interfaces for Custom Boards with ESP microcontrollers](<https://devfeed.tech/articles/developing-user-interfaces-for-custom-boards-with-esp-microcontrollers-13832.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/developing-user-interfaces-for-custom-boards-with-esp-microcontrollers/>)

Author: John Lee

Published: 2022-10-10T00:00:00Z

Content type: tutorial

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [User Interfaces](<https://devfeed.tech/topics/user-interfaces.md>), [Espressif](<https://devfeed.tech/topics/espressif.md>), [Microcontroller](<https://devfeed.tech/topics/microcontroller.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [GitHub](<https://devfeed.tech/topics/github.md>), [Code](<https://devfeed.tech/topics/code.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [bsp](<https://devfeed.tech/tags/bsp.md>), [c](<https://devfeed.tech/tags/c.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [esp](<https://devfeed.tech/tags/esp.md>), [espressif](<https://devfeed.tech/tags/espressif.md>), [github](<https://devfeed.tech/tags/github.md>), [i2c](<https://devfeed.tech/tags/i2c.md>), [lcd](<https://devfeed.tech/tags/lcd.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [manifest](<https://devfeed.tech/tags/manifest.md>), [project](<https://devfeed.tech/tags/project.md>), [screen](<https://devfeed.tech/tags/screen.md>), [spi](<https://devfeed.tech/tags/spi.md>), [squareline](<https://devfeed.tech/tags/squareline.md>), [user-interfaces](<https://devfeed.tech/tags/user-interfaces.md>), [waveshare](<https://devfeed.tech/tags/waveshare.md>)

### AI overview

This tutorial explains how to add a custom ESP-based board with a custom LCD to SquareLine Studio. It uses a WaveShare 7-inch display example and covers creating a board-support component, configuring display and touch communication, updating build and dependency files, and editing the board manifest.

### Source excerpt

A few weeks ago in this article we have introduced SquareLine Studio and how it can be used to develop user interfaces. This feature was available only for Espressif's boards. But what if we wanted to use this tool for our custom designed board based on an ESP chip with a custom LCD? Here is the solution! What is the best way to add a custom board into SquareLine Studio? Start with the custom_waveshare_7inch example on from esp-bsp repository on GitHub.

## Creating LVGL User Interfaces for ESP Microcontrollers with SquareLine Studio

DevFeed: [Creating LVGL User Interfaces for ESP Microcontrollers with SquareLine Studio](<https://devfeed.tech/articles/making-the-fancy-user-interface-on-esp-has-never-been-easier-13905.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/making-the-fancy-user-interface-on-esp-has-never-been-easier/>)

Author: John Lee

Published: 2022-09-11T00:00:00Z

Content type: tutorial

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [ui](<https://devfeed.tech/topics/ui.md>), [multiplatform](<https://devfeed.tech/topics/multiplatform.md>), [Template](<https://devfeed.tech/topics/template.md>), [Code](<https://devfeed.tech/topics/code.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [embedded](<https://devfeed.tech/tags/embedded.md>), [esp](<https://devfeed.tech/tags/esp.md>), [esp32](<https://devfeed.tech/tags/esp32.md>), [linux](<https://devfeed.tech/tags/linux.md>), [lvgl](<https://devfeed.tech/tags/lvgl.md>), [microcontrollers](<https://devfeed.tech/tags/microcontrollers.md>), [multiplatform](<https://devfeed.tech/tags/multiplatform.md>), [new-feature](<https://devfeed.tech/tags/new-feature.md>), [squareline](<https://devfeed.tech/tags/squareline.md>), [tool](<https://devfeed.tech/tags/tool.md>), [user-interface](<https://devfeed.tech/tags/user-interface.md>), [windows](<https://devfeed.tech/tags/windows.md>)

### AI overview

This tutorial explains how to create graphical user interfaces for ESP microcontrollers with SquareLine Studio and LVGL. It covers the visual editor, widgets, images, fonts, events, simulation, code export, and board template projects.

### Source excerpt

If you tried to make some fancy UI without any graphic library, you know, how hard it is. Fortunately, there are lot of graphical libraries for making fancy UI on our screens. One of the often used is LVGL, which is supported on ESP microcontrollers. Usually, when we wanted to use graphical library like LVGL, we had to know API functions and how to combine it to reach fancy UI. It isn't true anymore!