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J-Rat Techworks

Projects

Wide 16:9 hero image, clean flat-lay on a light neutral desk. In the centre, a small electronics starter setup: ESP32 development board, multimeter, soldering iron, breadboard with jumper wires, resistors, LEDs, wire cutters, heat shrink tubing, and a small plastic project box. Minimal, uncluttered layout. Soft natural lighting, modern and beginner-friendly. No text in image.
  • Projects

Top 10 IoT Projects for Beginners (That You Can Actually Build)

If you’re new to IoT, it’s easy to get stuck…

Read MoreTop 10 IoT Projects for Beginners (That You Can Actually Build)
mmWave Sensor
  • Projects

How to Build a mmWave Radar for Home Assistant

If you’ve ever had your smart lights or plugs turn…

Read MoreHow to Build a mmWave Radar for Home Assistant
  • Projects

Solar-Powered Water Tank Monitor using Home Assistant

If you’re on tank water, the “how much is left?”…

Read MoreSolar-Powered Water Tank Monitor using Home Assistant
LED Light Bar in front of fireplace, light bar is lit up in the same colours as a flame
  • Projects

How to Build a Smart LED Light Bar With ESP32, WLED and Home Assistant

If you’ve been hunting for a tall, slim, smart LED…

Read MoreHow to Build a Smart LED Light Bar With ESP32, WLED and Home Assistant
Ultrasonic water tank sensor powered by a solar panel sitting on top of a brick on top of an old watertank
  • Projects

Water Tank Level Sensor (ESPHome + Home Assistant)

If you’ve ever wondered whether your water tank is about…

Read MoreWater Tank Level Sensor (ESPHome + Home Assistant)

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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