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J-Rat Techworks

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Explore practical guides and explainers covering Home Assistant, ESP32, Zigbee, LoRa, MeshCore and water tank monitoring.

Arduino vs ESP32 vs Raspberry Pi
  • Blog

ESP32 vs Arduino vs Raspberry Pi: Which One Should You Use?

If you’re new to DIY electronics, it’s easy to lump…

Read MoreESP32 vs Arduino vs Raspberry Pi: Which One Should You Use?
Best electronics starter kits for beginners with Arduino, ESP32, breadboard, sensors and components
  • Blog

Best Electronics Starter Kits for Beginners in 2026

If you want to get into electronics without buying every…

Read MoreBest Electronics Starter Kits for Beginners in 2026
Home assistant logo surrounded by smart devices, blue background small
  • Blog

Home Assistant for Beginners: A Simple Getting Started Guide

If you’ve got a couple of smart bulbs, a plug…

Read MoreHome Assistant for Beginners: A Simple Getting Started Guide
  • Blog

mmWave Sensors: What They Are and How to Use Them with ESP32

If you’ve ever had lights turn off while you’re sitting…

Read MoremmWave Sensors: What They Are and How to Use Them with ESP32
ESP32 C3 variants sitting side by side, desktop screen with code in the background
  • Blog

ESP32-C3 Beginner’s Guide for Home Projects

The ESP32-C3 has quietly become one of the best choices…

Read MoreESP32-C3 Beginner’s Guide for Home Projects
ESP32 Development Board in deep sleep mode
  • Blog

ESP32 Deep Sleep Explained: How to Get Real Battery Life

If you’ve ever built a battery powered ESP32 sensor, you’ve…

Read MoreESP32 Deep Sleep Explained: How to Get Real Battery Life
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    Home

J-Rat Techworks is my little home lab on the internet.
I build and share DIY electronics, ESP32 projects and home-automation ideas, with full code and build logs so you can copy or remix them.

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