As a highly experienced embedded systems programmer, I am familiar with precisely the kind of project you have outlined. Throughout my career, I have successfully designed and implemented automated systems, interfaced with various hardware platforms including the Arduino Mega and executed efficient data logging tasks with synchronized components using RS485 communication.
In terms of my Python skills, automation has always been a major part of my professional focus. I possess advanced knowledge in Python programming applied to data entry automation, data fetching and log creation all of which are the core requirements for your project. My capacity to deliver a fully automated system that fetches data from your multifunction meter without any manual intervention is one of my many strengths.
Additionally, I have significant peripheral programming expertise such as USB, WiFi, BLE, and i2C which can provide additional value during the implementation phase. By leveraging my cross-domain experience and deeply engrained skills in Arduino, Linux and Python programming among others, I am confident that I can excellently execute this Automating Data Fetch Python Project to your utmost satisfaction.