@thespenceryan: building jarvis in your pocket This is exactly how I did it, no gatekeeping. I wanted a way to talk to my local Hermes agent quickly and easily. I’ll share my entire local AI setup with Hermes and my Second Brain soon, but in short my Hermes agent bounces between Qwen 3.8 27b for easy stuff, and GPT OSS 120b for more complex tasks. But realistically you can do this with any model that’s capable of handling simple queries. I purchased an M5Stack Stopwatch which is essentially a tiny computer built on the ESP32-S3 chip. It already has Wi-Fi, Bluetooth, and a motion sensor in it, all packed into a round AMOLED stopwatch. All it needs, is a firmware. When I was originally trying to get one of these, they were all coming directly from China, which would take weeks. Fortunately I found that DigiKey had stock of them and I was able to get my hands on it much quicker. From there, I gave Claude Code the following prompt to build the firmware and Hermes plugin: “Build a Hermes plugin and ESP32 firmware so I can chat with my Hermes agent from a little pet on my esp32’s screen over local Wi-Fi. Keep it simple and walk me through it.” But this only worked if you and your device were on the same local Wi-Fi network. So I built in a redundant direct Bluetooth connection using this prompt: “Add Bluetooth as a backup. If the pet can’t reach Hermes over Wi-Fi, have it switch to Bluetooth LE with my PC automatically, and switch back to Wi-Fi when it’s available again.” Then finally, I wanted to be able to access it from anywhere so I built in a Tailscale option that I can flip on whenever I’m away from my Hermes computer (like the personal AI server I’m building) using this prompt: “Add Tailscale so the pet can reach Hermes from any Wi-Fi, not just my home network. Put it behind an on/off switch in the pet’s settings and keep my local Wi-Fi setup working as before.” I strongly encourage you to try things out like this. And long the way, ask it to explain it to you so you understand the concepts. It’s incredible the things you can do with little to no experience. I’ll be sharing my full AI server setup soon, so follow if you want to see that. #ai #jarvis

Spencer Ryan

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Saturday 14 November 2026 14:32:01 GMT