#Self-Hosted
Factory to Cloud Behind NAT: Push Snapshots and a Command Queue
The production machine sits in a LAN behind NAT with no public IP, but the owner wants to view data on a cloud website and make edits from a phone that reach the internal machine — possible without opening ports or setting up a VPN, using push snapshots + an edit command queue + idempotent acks
Reading a DTSU666 3-Phase Meter with Raspberry Pi over Modbus RS485
Notes on connecting a DTSU666 Smart Power Sensor to a Raspberry Pi over RS485, reading 3-phase electrical measurements from multiple meters using Modbus RTU, decoding 32-bit floats correctly, and storing them in SQLite/MySQL before exporting through MQTT and a REST API, including a negative-value bug I ran into myself
Generate PromptPay QR (EMVCo) in Pure Python — No External Libraries
Want to generate PromptPay payment QR codes in your own POS/web system without calling a bank API? In this article, I build the EMVCo TLV string + CRC16 myself in pure Python, producing a payload that matches the Thai QR specification and can be scanned for payment by any banking app, along with the pitfalls that stop apps from reading it.
Using Claude to Upgrade Proxmox 8 to 9 and Rebuild Windows VMs
A real case using VS Code + Claude to upgrade an entire Proxmox cluster from 8 to 9, then delete and rebuild all Windows VMs for VDI without ever SSHing into a host myself. I have laid out the commands and scripts Claude generated during the actual work as steps that a person or AI can read and run again.
Put an Idle VPS to Work with WireGuard — A Complete Client Guide
Turn a VPS you signed up for on an annual plan into a WireGuard hub for accessing your home LAN anytime, without port forwarding — covering app installation, config imports, QR scanning, troubleshooting, and administration
Build a Desktop AI Server with WSL2 + Ollama + OpenClaw
A record of building a home AI server from scratch, starting with Windows 11 IoT, installing WSL2 + Ubuntu, setting up Ollama to run LLMs on two GPUs, then adding multiple OpenClaw instances through systemd, covering drivers, custom Modelfiles, user isolation, and benchmarks