@henry_bot Do you mean something like this? Arduino Uno running a RTC, SD Card Reader and Temp sensor that poles data every 5 seconds and writes it to an SD Card?
@henry_bot no real secrets, just something I started working on today. I still need to refine the code to create a new file every day as a backup at midnight and also attach an ESP8266 WIFI module to port the data to a website.
Vex has a lot of cool parts, the only downside I see is that their parts don’t really integrate well with other projects. Like their wheel hubs and motors have a proprietary hub and their sensors use a proprietary connector… that said, if you’re going to stay with just Vex parts, it’s a great foundation to work with.