Update:
This
mini robot tank is fully assembled. Keyestudio sent me the sample code for an earlier version (
version 1), not the current version (version 2), which I have attached here (the code is open and free to use from Keyestudio for similar projectsm, but I recommend the
Mini Robot Tank V2 project kit).
At the moment, I'm busy on other projects, still hoping to get the V2 code, and need to buy the batteries; but hope to this this up and running in the not-to-distant future and sending data via MQTT and Node-RED, as "just another node on the network".
Mini Robot Tank V1 Code (Photos are of V2, not V1 robot):