n8n Gemini WhatsApp free TTS and STT

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Learn how to build a complete WhatsApp AI agent with free text to speech and speech to text using Google Gemini and n8n! This comprehensive tutorial shows you how to create an intelligent bot that handles text AND voice messages, sends emails automatically, and pulls data from Google Sheets - all without spending a single dollar.

🚀 What You'll Learn

✅ Set up WhatsApp Business API credentials and Token
✅ Configure Google Gemini AI for text and voice processing
✅ Build free Gemini voice-to-text transcription system
✅ Create free text-to-speech responses
✅ Integrate Gmail for automated email sending
✅ Connect Google Sheets for data lookup
✅ Deploy complete automation workflow
✅ Free speech-to-text API integration with Google Cloud
✅ Zero-cost text-to-speech voice synthesis setup
✅ WhatsApp webhook configuration for real-time messaging
✅ Google Cloud service account authentication
✅ Voice message format conversion (OGG to text)
✅ Binary file handling for audio processing
✅ Multi-language voice AI support configuration
✅ Free Google Cloud TTS API quota optimization
✅ WhatsApp media download and upload automation
✅ JSON payload structuring for Gemini API calls
📚 Chapters

0:00 - Intro
0:26 - Demo: WhatsApp AI Agent with Text and Voice
2:06 - WhatsApp Trigger Node Configuration
2:28 - Getting WhatsApp Credentials (Facebook Developer Setup)
4:40 - App ID and App Secret Configuration
5:12 - WhatsApp Business Cloud Send Message Setup
6:26 - WhatsApp API Setup and Test Number Configuration
7:21 - Access Token Generation and Extending its time
8:15 - Configuring the WhatsApp send text node
8:58 - OpenAI Agent Node Setup
9:49 - Set Node Configuration for Text Variables
11:03 - Set Audio Node Configuration
11:50 - Switch Node for Text vs Audio Routing
13:13 - Download Media Node (WhatsApp)
14:10 - HTTP Request Node for converting JSON to Binary Audio Download
15:11 - Upload to Google Cloud Node
15:50 - Getting Google Gemini API Key
17:38 - Merge Node Configuration
18:15 - Audio File Upload Parameters (HTTP Request)
19:19 - Gemini Audio Transcription (HTTP Request)
20:21 - Main Gemini AI Agent Configuration
21:03 - Gmail Tool Setup
22:15 - Google Sheets Tool Setup
22:50 - AI Agent Prompt Configuration
24:38 - If Node for Response Type Routing
25:14 - Send Text Message Node
25:50 - Google Text-to-Speech Setup Introduction
28:10 - Installing Google Speech Community Node
28:44 - how to get Google Cloud Service Account Credentials or API
29:17 - Billing Account Configuration
30:01 - Enabling Text-to-Speech and Speech-to-Text APIs
30:24 - Creating Google Service Account
32:02 - Google Text-to-Speech Node Configuration
33:25 - Read Files from Disk Node
34:13 - Send Audio Message Node (WhatsApp)
34:47 - Free TTS | STT Gemini n8n Telegram AI Agent
34:52 - YouTube cross posting on social media platforms automation on n8n
Perfect for Small Businesses & Entrepreneurs: This tutorial is specifically designed for those seeking cost-effective AI automation solutions. You'll master free text-to-speech technology using Google Cloud's generous free tier (4 million characters monthly - 800,000 words on average), implement speech-to-text conversion without paid subscriptions, and create a professional WhatsApp voice AI assistant that rivals expensive enterprise solutions. With this step-by-step approach covers free voice AI tools and no-code automation platforms integrations that deliver premium functionality at zero cost. Whether you're building customer service bots, personal assistants, or business automation workflows, this guide provides everything needed to deploy production-ready voice AI systems using completely free resources and APIs.

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Видео n8n Gemini WhatsApp free TTS and STT канала Karam Hawash | AI Automation