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LoRa + ESP-NOW IoT Master-Slave Network

Role: IoT Network Engineer @ Evotech

Duration: Aug 2025 - Dec 2025

Overview

Architected a wireless network spanning 200m using LoRa and ESP-NOW, integrating custom PCB design and 3D printed enclosures.

Technical Details

  • Architected a LoRa + ESP-NOW master-slave wireless network at 200m across 2 nodes (LilyGoT3 + MAPPI32), sustaining 4-hour continuous operation per charge cycle and delivering a 90% packet success rate.
  • Designed custom PCB layouts via EasyEDA and fabricated enclosures in-house using 3D printing (Bambu Studio) and CNC, eliminating external fabrication dependencies and reducing prototyping costs.

Image Gallery

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Core Technologies

LoRa
LoRa
ES
ESP-NOW
Platform IO
Platform IO
Arduino IDE
Arduino IDE
EasyEDA
EasyEDA

Key Results

  • 90% Packet Success Rate
  • 200m Range
  • In-houseFabrication