Selective Appeal Blog
Projects in Home Automation and the Internet of Things
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Building a Modern ESP32 Web Interface with Svelte and AI

Building a Modern ESP32 Web Interface with Svelte and AI

A guide to creating a responsive, self-hosted web interface for ESP32 microcontrollers using Svelte, PlatformIO, and AI coding assistance.

Improving Reliability for ESP32 Plant Watering Systems: Lessons from Plant133

Improving Reliability for ESP32 Plant Watering Systems: Lessons from Plant133

Diagnosing and fixing common failures in ESP32 plant watering projects: PCB design flaws, pump corrosion, and soil moisture sensor protection.

Improved PCB Stencil Alignment with 3D Printed Fixtures

Improved PCB Stencil Alignment with 3D Printed Fixtures

Learn how to design and use a simple 3D printed fixture to perfectly align your PCB and solder paste stencil, preventing smearing and speeding up assembly.

Garden133 Firmware: Power-Efficient C++ Code For ESP32, With Deep Sleep and LoRa

Garden133 Firmware: Power-Efficient C++ Code For ESP32, With Deep Sleep and LoRa

A deep dive into the ESP32 C++ firmware for Garden133, featuring energy-conserving deep sleep and LoRa communication, and Home Assistant integration via MQTT using the og3 framework.

Garden133 Radio: Low-Power Communication for ESP32 Soil Sensors using LoRa

Garden133 Radio: Low-Power Communication for ESP32 Soil Sensors using LoRa

Designing a custom, low-power LoRa radio protocol using Protocol Buffers for the Garden133 ESP32 soil moisture monitoring system.

Garden133 Hardware: Solar-Powered, ESP32-Based Soil Moisture Sensor System Design

Garden133 Hardware: Solar-Powered, ESP32-Based Soil Moisture Sensor System Design

Detailed hardware design for the Garden133 solar-powered ESP32 soil moisture sensor system, featuring LoRa, TP4056 battery charging, and a 3D printed waterproof enclosure.

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Projects
Plant133
Dough133
Room133
Garage133
Garden133
PCB Assembly