W5500 Brings Wired ESPHome Monitoring to Multi-Pack LiFePO4 Battery Systems
ESP32-S3 + W5500 connects TDT-1001 LiFePO4 BMS data to ESPHome and Home Assistant, including multi-pack monitoring over one RS-232 link.
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Components
Hardware components
WIZnet - W5500
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Espressif - ESP32-S3-DevKitC-1
x 1
Project description
What is the project? esphome-tdt-bms is an ESPHome external component developed for Humsienk 100 Ah rack-mount LiFePO4 batteries and other battery packs using a TDT-1001 BMS or compatible variant. Its purpose is to take detailed battery-management data from the BMS and expose it as sensors inside ESPHome / Home Assistant. GitHub The author reports testing the implementation with: 2 × Humsienk 16S 100 Ah LiFePO4 packs ↓ TDT-1001 BMS ↓ RS-232 ESP32-S3-DevKitC-1 ↓ W5500 Ethernet ↓ ESPHome ↓ Home Assistant The tested software environment was ESPHome 2026.4.4 / 2026.4.5 using the ESP-IDF…
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