Day 12 – BACnet RPM CSV Logging with Daily Rotation | Production Raspberry Pi Scraper скачать в хорошем качестве

Day 12 – BACnet RPM CSV Logging with Daily Rotation | Production Raspberry Pi Scraper

Welcome to Day 13 of the BACnet with Python for Building Automation Engineers course. Today is theory plus real-world implementation. Because reading BACnet data is one thing. Storing it properly for months in the field is another. --- First, we continued our theory discussion on looping over dictionaries. Because once you start logging structured RPM data… you are living inside nested dictionaries. We talked about: • iterating over items() • mapping headers to object identifiers • building rows dynamically • merging device result dictionaries • safe lookups with get() • designing clean data structures for scalability This is the difference between: printing values and engineering a data pipeline. --- Then we vibe coded something very real. We added daily CSV rotation to our BACnet RPM scraper running on Raspberry Pi. Now the app: • runs continuously • polls both VAV and AHU • logs one row per cycle • writes to data_logs/bacnet_rpm_YYYY-MM-DD.csv • auto-rotates at midnight • creates headers if missing • appends clean Excel-friendly rows This is not a demo script anymore. This is a field-ready data logger. If you deploy a Raspberry Pi in a building… it won’t create one massive file forever. It rotates daily. Clean. Predictable. Maintainable. We also structured the code to: • separate CSV helpers • separate header mapping • safely extract values • merge device results • handle RPM failures gracefully This is applied engineering. Understanding dictionaries. Understanding loops. Understanding long-term behavior. And using ChatGPT strategically to refine structure without losing control of the logic. Learn the fundamentals. Then build real tools. --- Full course + repo: https://github.com/bbartling/py-bacne... If you’re an HVAC tech or controls engineer who wants to deploy real BACnet data collectors in the field and not just run one-off scripts on your laptop, this is the mindset shift. Checkpoint 2 is officially production-grade. #vibecoding #bacnet #python #hvac #buildingautomation #controlsengineering #smartbuildings #automation #iot #bac0 #raspberrypi #engineering #programming #opensource #hvaccontrols #hvacoptimization