About

This adapter is designed to connect an eBus compatible boiler to any TTL port (TTL-USB, ESP8266, ESP32, Arduino, etc).

Same size as popular RS485-TTL module for more compatibility.

As a software part, you can use ebusd with different connection types:

  • TTL-UART - you need converter that doesn’t buffer too much data (CP2102 or FTDI based (like FT232)) 👍
  • ESP8266 / ESP32 enhanced ebusd protocol using ebusd-esp firmware (only Wi-Fi connection now) 🎉
  • Raspberry Pi internal UART port can be used with some preparations,
    but I recommend ttyebus kernel module which is with the lowest latency possible 🚀
  • ser2net compatible firmware (ESPEasy, ESP-Link, ESPHome, Tasmota, etc) or hardware converter with some restrictions (Receive - OK; Transmit - may be errors) 🤔

Also available HA integration between ebusd daemon and Home Assistant 🏚

Overview

Photos

Schematic

Schematic

Where to buy?

I sell on Tindie

DIY

PCBWay.com acted as a sponsor of this project.
The quality of order fulfillment is excellent.
packed

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License

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