Embedded

When developing with ESPHome on ESP32 devices, crashes can be frustrating to debug without proper stack traces. Enabling coredumps provides detailed crash information to help identify the root cause of issues. Configuration To enable coredump functionality, you’ll need to modify your ESPHome configuration and create a custom partition table. This setup is for the Arduino framework - ESP-IDF configurations will differ slightly. ESPHome Configuration Add the following to your ESPHome YAML configuration: ...

Adtran 411 Security Audit Adtran produces equipment for fiber ISPs. I was provided an Adtran 411 by my current ISP for Internet access and decided to take a deep look into it. Hardware The Adtran 411 is a small GPON fiber ONT (Optical Network Terminal) designed to give symmetrical gigabit fiber Internet to SOHO users. It connects to the ISP via a GPON uplink and provides the user a normal ethernet RJ-45 connector to plug their router into and a RJ-11 port for a landline to be tunneled over VOIP. ...

This post outlines the process to replace a Tuya radio module with one running ESPHome to fully control a heated mattress pad locally with Home Assistant. I purchased a Sunbeam Heated Mattress Pad for those cold winter nights. The mattress pad controller connects to WiFi and has a remote control app. However, it has a safety feature that limits functionality. The app can only adjust heat levels and turn the pad off unless you’ve recently pressed a physical button on the controller, effectively limiting the app to changing heat levels and turning the device off. ...

Homeplate is an ESP32-based e-ink dashboard that displays data from Trmnl and Home Assistant on an Inkplate 10 device. The firmware fetches and renders various dashboard widgets including sensor readings, WiFi QR codes, and system status information. The implementation uses FreeRTOS on ESP32 to manage display updates, network connectivity, and power management for the e-ink display. It supports multiple data sources and configurable display layouts for home automation monitoring.

ESPHome Components is a collection of custom components that extend ESPHome functionality for ESP8266 and ESP32 microcontrollers. The repository contains C++ implementations of additional sensors, displays, and device integrations not available in the core ESPHome distribution. The components follow ESPHome’s standard architecture and configuration patterns, allowing them to be easily integrated into existing ESPHome projects through external component references. Each component includes the necessary C++ code and Python configuration validation.

A while ago I received a bunch of bare ESP-WROOM-02 chips on tape, but I could not find enough documentation to program them (partially out of laziness). With my recent interest in ESPHome, I decided to give them another try. This blog post contains the results of my research on how to program them. ESP-WROOM-02 The ESP-WROOM-02 is just a ESP8266 underneath. If you don’t have a breakout board like me, then you will need a UART adapter and make a few minimal solder connections to set the various boot modes to allow you to program the firmware. Once programmed for the first time, you can use OTA updates to allow flashing firmware over WiFi and not need to mess with the wiring every time you want to reprogram it. ...