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J-Rat Techworks

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A wide cinematic image of a terrain map viewed from above, showing two competing wireless mesh networks expanding across hills, houses, and remote locations.
  • Blog

MeshCore vs Meshtastic: Which LoRa Mesh Platform Is Better for Real-World Use?

MeshCore and Meshtastic are both LoRa-based mesh communication projects, but…

Read MoreMeshCore vs Meshtastic: Which LoRa Mesh Platform Is Better for Real-World Use?
A photorealistic close-up of a CN3791 MPPT charging module PCB with a softly blurred solar panel behind it in natural daylight. The board is the focus, background is bokeh and unobtrusive. Composition leaves open space on the left.
  • Blog

CN3791 MPPT Solar Li-ion/LiPo Charging Boards: what they are and how to use them safely

Quick Summary A CN3791 MPPT board is a small module…

Read MoreCN3791 MPPT Solar Li-ion/LiPo Charging Boards: what they are and how to use them safely
16:9, clean minimal illustration of a local smart home dashboard UI (generic, no brand), with an ESP32-S3 board in foreground, subtle network lines connecting sensors, modern and practical
  • Blog

ESP32-S3 in the real world: when it’s the right ESP32 (and when it isn’t)

Ever built a “simple” ESP32 project that almost works, until…

Read MoreESP32-S3 in the real world: when it’s the right ESP32 (and when it isn’t)
  • Blog

Should You Build It or Buy It? A Practical Smart Home Guide

There’s a point in every smart home journey where you…

Read MoreShould You Build It or Buy It? A Practical Smart Home Guide
  • Blog

Raspberry Pi AI HAT+ 2: What it is, what it can run, and who it’s for

Raspberry Pi’s original AI add-ons (the AI Kit and AI…

Read MoreRaspberry Pi AI HAT+ 2: What it is, what it can run, and who it’s for
Arduino vs ESP32 vs Raspberry Pi
  • Blog

ESP32 vs Arduino vs Raspberry Pi: what’s the real difference, and which one should you buy?

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

Read MoreESP32 vs Arduino vs Raspberry Pi: what’s the real difference, and which one should you buy?
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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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