ESP32 Blog (80 posts)
Dive into comprehensive tutorials, project guides, and expert insights about ESP32, IoT, and embedded systems development.
PlatformIO ESP32 Setup: Install in VSCode, Build & Upload
Install PlatformIO in VSCode, create an ESP32 project, understand platformio.ini, and build and upload your first program - plus the CLI for when you outgrow the buttons.
Two Controllers, One SKU: Adding CrowPanel 4.2" v1.2 Support to Our ESPHome E-Paper Driver
Elecrow ships the CrowPanel 4.2" e-paper with two different controllers under one listing. How we added UC8276C support to our ESPHome component, fixed an inverted panel, and cut refresh from ~3s to 448ms.
From CrowPanel 7.0 to the ESP32-P4 Advance 5.0: How Elecrow's HMI Series Evolved
Three generations of Elecrow CrowPanel HMI displays compared - the 7.0, the Advance 7.0 and the new ESP32-P4 Advance 5.0, and what actually changed.
Battery-Powered E-Paper Climate Display with ESPHome (Waveshare ESP32-S3-ePaper-1.54G)
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.
Turn the M5Stack Dial into a Kitchen Timer with ESPHome
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.
Elecrow ESP32 Miner Review - A CYD with USB-C and a Case
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.
Reflashing the Guan Sen WiFi Irrigation Controller with ESPHome
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.
Elecrow CrowPanel E-Paper with ESPHome & LVGL (4.2" and 5.79")
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.
How to Use a Multimeter - A Practical Guide for ESP32 & Electronics Makers
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.
Types of Multimeters - Which One Do You Actually Need?
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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