WHAT DO DATA LOGS DO

[Aliapoh]

sry about the caps lock in the title

[Derpykat5]

They unlock a lore entry that appears on your screen for several seconds or until you dismiss it and they give you 3 wrenches each like the popup says.

[mintytides]

they give you wrenches and a little lore snippet
you can also get gadgets by talking to that one elder robot in the second canyon safe area and having enough data logs collected