I just built a fully automated AI Social Media Posting system using n8n and Google Gemini — here's exactly how it works and every problem I solved building it 🧵 Most businesses post content manually every day. Someone has to write the caption, format it for each platform, schedule it, then repeat tomorrow. I automated the entire process in one workflow. Here's what happens automatically every morning at 9AM: 📅 Node 1 — Daily Schedule Trigger The workflow wakes up automatically every day at 9AM. No manual starting. No forgetting. It just runs. 📊 Node 2 — Get Pending Posts (Google Sheets) The workflow reads from a Google Sheet content calendar and pulls only rows where status is "Pending". This means you just add content ideas to a spreadsheet and the system handles everything else. 🤖 Node 3 — AI Caption Generator (Google Gemini) This is where the magic happens. Gemini AI reads your raw content idea and automatically writes a platform-optimized post for Twitter, LinkedIn or TikTok — with the right tone, length and hashtags for each platform. What used to take 30 minutes now takes 3 seconds. 🔀 Node 4 — Route by Platform (Switch Node) The workflow intelligently routes each post to the right platform based on what's in your content calendar. Twitter gets a short punchy caption. LinkedIn gets a professional detailed post. TikTok gets an engaging hook. 🐦 Node 5 — Post to X (Twitter) The AI generated caption is posted directly to Twitter automatically. 💼 Node 6 — Post to LinkedIn The professional version of the post goes live on LinkedIn without any manual action. 📱 Node 7 — Post to TikTok The TikTok version is formatted and queued via HTTP Request automatically. ✅ Node 8 — Update Post Status (Google Sheets) After posting the row in Google Sheets is automatically updated from "Pending" to "Posted" — so you never accidentally post the same content twice. 📱 Node 9 — Notify Timothy (Telegram) A Telegram message is sent confirming all posts went live with a summary of what was posted and where. Problems I solved building this: ✅ Content ideas added to Google Sheets once ✅ AI writes platform-optimized captions automatically ✅ Posts go live on 3 platforms simultaneously ✅ Content calendar updates itself ✅ Telegram confirmation delivered instantly Time saved per week: 3-5 hours of manual content work eliminated. This is what I build for marketing agencies, coaches and content creators. If your team is still writing and posting content manually every day, let's talk. 🔗 Portfolio: timothy-aiautomation-portfolio.netlify.ap