ESP32 Blog (77 posts)

Dive into comprehensive tutorials, project guides, and expert insights about ESP32, IoT, and embedded systems development.

ESPHome on the Waveshare ESP32-S3-ePaper-1.54G: a battery-powered climate display with deep sleep, the power-latch trick, a 4-color LVGL UI and real battery data.

Battery-Powered E-Paper Climate Display with ESPHome (Waveshare ESP32-S3-ePaper-1.54G)

Smart Home & Automation

ESPHome on the Waveshare ESP32-S3-ePaper-1.54G: a battery-powered climate display with deep sleep, the power-latch trick, a 4-color LVGL UI and real battery data.

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Build a standalone kitchen timer with ESPHome on the M5Stack Dial v1.1: half-minute detents, a state-colored LVGL arc, an idle clock kept by the onboard RTC, and a buzzer that rings until you tap it quiet.

Turn the M5Stack Dial into a Kitchen Timer with ESPHome

Projects & Demos

Build a standalone kitchen timer with ESPHome on the M5Stack Dial v1.1: half-minute detents, a state-colored LVGL arc, an idle clock kept by the onboard RTC, and a buzzer that rings until you tap it quiet.

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Hands-on review of Elecrow's $15 ESP32 Miner. Same ILI9341 panel as a stock CYD, with USB-C, an included acrylic case, and a few exposed JST headers. Arduino IDE and ESP-IDF starter configs included.

Elecrow ESP32 Miner Review - A CYD with USB-C and a Case

Reviews & Comparisons

Hands-on review of Elecrow's $15 ESP32 Miner. Same ILI9341 panel as a stock CYD, with USB-C, an included acrylic case, and a few exposed JST headers. Arduino IDE and ESP-IDF starter configs included.

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How I reflashed the Guan Sen 2-pump WiFi irrigation kit (Tuya CB3S / BK7231N) with ESPHome via LibreTiny - including the GPIO map, the LibreTiny interrupt quirk, and an auto-off safety timer that actually saves your greenhouse.

Reflashing the Guan Sen WiFi Irrigation Controller with ESPHome

Smart Home & Automation

How I reflashed the Guan Sen 2-pump WiFi irrigation kit (Tuya CB3S / BK7231N) with ESPHome via LibreTiny - including the GPIO map, the LibreTiny interrupt quirk, and an auto-off safety timer that actually saves your greenhouse.

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How to drive the Elecrow CrowPanel 4.2" and 5.79" e-paper displays with ESPHome and LVGL using a custom external component. Includes a minimal setup and a full weather dashboard with OpenWeatherMap.

Elecrow CrowPanel E-Paper with ESPHome & LVGL (4.2" and 5.79")

Smart Home & Automation

How to drive the Elecrow CrowPanel 4.2" and 5.79" e-paper displays with ESPHome and LVGL using a custom external component. Includes a minimal setup and a full weather dashboard with OpenWeatherMap.

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Learn how to use a multimeter to test voltage, check continuity, measure current, and debug your ESP32 projects. A hands-on guide with real maker examples.

How to Use a Multimeter - A Practical Guide for ESP32 & Electronics Makers

Getting Started

Learn how to use a multimeter to test voltage, check continuity, measure current, and debug your ESP32 projects. A hands-on guide with real maker examples.

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Learn the different types of multimeters (digital, analog, clamp, auto-ranging) and find the best one for electronics, ESP32 projects, and hobby work. Budget to pro picks compared.

Types of Multimeters - Which One Do You Actually Need?

Reviews & Comparisons

Learn the different types of multimeters (digital, analog, clamp, auto-ranging) and find the best one for electronics, ESP32 projects, and hobby work. Budget to pro picks compared.

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Elecrow CrowPanel 2.1 inch rotary display review: ESP32-S3, 480×480 IPS, ESPHome + LVGL setup, Home Assistant integration, and 3D-printed case guide.

CrowPanel 2.1" ESP32 Rotary Display Review – The Smart Home Knob I Actually Enjoy Using

Reviews & Comparisons

Elecrow CrowPanel 2.1 inch rotary display review: ESP32-S3, 480×480 IPS, ESPHome + LVGL setup, Home Assistant integration, and 3D-printed case guide.

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Find the best ESP32 camera module. Compare OV2640, OV5640, OV3660 and OV7670 on image quality, night vision, specs, and price.

Best ESP32 Camera Module - OV2640, OV5640, OV3660 and OV7670 Compared

Reviews & Comparisons

Find the best ESP32 camera module. Compare OV2640, OV5640, OV3660 and OV7670 on image quality, night vision, specs, and price.

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Free web-based drag-and-drop UI designer for ESP32. Create beautiful interfaces with 19+ LVGL widgets, no coding required. Export production-ready YAML for ESPHome.

Introducing ESPHome LVGL UI Designer: Visual UI Builder for ESP32

Projects & Demos

Free web-based drag-and-drop UI designer for ESP32. Create beautiful interfaces with 19+ LVGL widgets, no coding required. Export production-ready YAML for ESPHome.

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