So, you’ve followed our Bluetooth Proxy 2025 Guide and have an ESP32 piping Bluetooth signals into Home Assistant. Amazing, right? But maybe you’re noticing your Xiaomi thermometer batteries are draining faster than usual. Or perhaps your SwitchBot Lock keeps showing…
Integrating KNX with Home Assistant (HA) is the “gold standard” for professional-grade smart homes. While Wi-Fi and Zigbee are great for hobbyists, KNX offers a hardwired, decentralized backbone that works even if HA is offline. To bridge these two worlds,…
This guide compares ESP32 and STM32 to help you choose the right MCU for your project based on connectivity, real-time needs, power use, and tooling. When people say “ESP32 vs STM32”, they’re really comparing a Wi-Fi SoC (ESP32) with a…
If you are choosing between the ESP32-S2 and ESP32-S3 for a new project, the ESP32-S3 is the better default for most users. Both use 240 MHz Xtensa LX7 processors, both support 2.4 GHz Wi-Fi and native USB OTG, and both…
Quick verdict: choose ESP32-S3 for most new projects because it adds native USB, Bluetooth 5 LE, more GPIOs and SIMD instructions for AI Choose the original ESP32 or ESP32-WROOM when you need Bluetooth Classic, its two on-chip DACs or maximum…
Understanding the Adafruit_PCF8575 Button Example Microcontrollers never seem to have enough pins. That’s where the PCF8575 comes in: a simple I²C 16-bit GPIO expander that gives you 16 extra digital pins using only 2 wires (SDA/SCL). The Adafruit example you…
The BME280 is a tiny environmental sensor that measures: From pressure, you can also estimate altitude, which is exactly what the Adafruit example you posted does. In this guide we’ll: 1. What is the BME280? The Bosch BME280 is a…
This guide shows how to wire an ADS1115 to an ESP32, choose the right gain, and understand the Adafruit ADS1X15 example so you get accurate voltage readings. The ADS1115 (16-bit) and ADS1015 (12-bit) are very popular external ADC chips. They…
Build an ESP32 air quality station for Home Assistant using SCD41 or SCD30 for CO₂, SGP40 for VOCs, and SDS011 for PM2.5, with clear wiring, ESPHome setup, MQTT alternatives, dashboard examples, and practical automations for healthier indoor air. If you…
Learn how to use ESP32 with LoRa for long-range remote sensing in Home Assistant, with practical node and gateway design, MQTT topics, YAML sensors, and reliability tips for garden, well, or shed monitoring Wi-Fi is great indoors, but it often…