Voice & text control for Home Assistant using Telegram, Whisper & Gemini

📝 Workflow Description

This workflow creates a conversational bridge between Telegram / n8n Chat and Home Assistant. It allows users to control smart home devices or request information using natural language (text or voice).

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🔑 Key Features - Multi-channel input: Works with both Telegram and n8n’s chat interface. - Voice support: Telegram voice messages are transcribed to text using OpenAI Whisper. - AI-driven assistant: Google Gemini processes queries in natural language. - Home Assistant integration: Uses MCP client tools to execute actions like turning devices on/off, adjusting lights, or broadcasting messages. - Memory management: Short-term memory keeps context within conversations. - Smart reply routing: Responses are automatically sent back to the correct channel (Telegram or chat). - Message formatting: Telegram replies are beautified (bold, bullet points, inline code, links).

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📌 Node Overview - Telegram Trigger: Captures incoming Telegram messages (text or voice). - Bot Is Typing: Sends a “typing…” action to indicate the bot is working. - Voice or Text: Separates voice and text inputs. - Get Voice File → Speech to Text → Transcription to ChatInput: Handles Telegram voice notes by downloading the file, transcribing it, and preparing it for the chat pipeline. - When Chat Message Received: Captures messages from n8n’s built-in chat interface. - Process Messages: Normalizes incoming data (input text, source, session ID, voice flag). - Home Agent: Main AI agent that processes queries. - Google Gemini Chat Model: Language model for intent understanding and conversation. - Simple Memory & Simple Memory1: Buffer memories to preserve conversation context. - Home Assistant Connector: MCP client node that executes smart home actions (turn on/off devices, adjust lights, etc.). - Reply Router: Routes the assistant’s response either to Telegram or to the n8n chat webhook. - Telegram Message Beautifier → Telegram Send: Formats and sends responses back to Telegram. - Respond to Webhook: Sends responses to n8n chat.

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🚀 Example Use Cases - Send “Turn on the living room lights” via Telegram → Bot triggers Home Assistant action. - Ask “What’s the temperature in the bedroom?” → Response comes back formatted in Telegram. - Record a voice note “Goodnight mode” → Automatically transcribed and executed by Home Assistant. - Use n8n chat to quickly trigger automations or check device statuses.