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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.

Open MeshCore repeater mounted on a pole
  • Blog

MeshCore Web Flasher: How to Flash and Set Up a Repeater

A MeshCore repeater is one of the easiest ways to…

Read MoreMeshCore Web Flasher: How to Flash and Set Up a Repeater
Water tank monitoring sensor options
  • Blog

Best Sensors for Water Tank Monitoring

If you want a reliable water tank sensor, the sensor…

Read MoreBest Sensors for Water Tank Monitoring
Low-power microcontroller boards for battery projects
  • Blog

Best Low-Power Boards for Battery Projects: What to Buy in 2026

Picking the best low-power boards for battery projects sounds simple…

Read MoreBest Low-Power Boards for Battery Projects: What to Buy in 2026
  • Blog

Home Assistant Infrared: How to Control TVs, Air Conditioners, and Other IR Devices

Infrared feels like old tech, but that is exactly why…

Read MoreHome Assistant Infrared: How to Control TVs, Air Conditioners, and Other IR Devices
Realistic featured image showing a modern home interior with Zigbee-style smart home devices including a smart plug, motion sensor, door sensor, smart bulb, and wireless button, connected by subtle glowing lines to represent a mesh network, with a small central hub visible in the scene.
  • Blog

What Is Zigbee? A Beginner-Friendly Guide to Zigbee Smart Homes

If you are trying to work out what Zigbee is,…

Read MoreWhat Is Zigbee? A Beginner-Friendly Guide to Zigbee Smart Homes
A detailed ESP32-C5 development board floats above a dark futuristic background, illuminated from above with dramatic lighting. Subtle blue circuit traces glow beneath the board, drawing attention to the chip, pins, and antenna area. The image has a clean, realistic, and professional tech blog style in a wide landscape format.
  • Blog

ESP32-C5 Explained: 5 GHz Wi-Fi & ESPHome

The ESP32-C5 matters because it fills a gap that had…

Read MoreESP32-C5 Explained: 5 GHz Wi-Fi & ESPHome
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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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