Actually I mis-identified my module, it's ATOM LITE not ATOM S3 LITE on closer inspection (the names of these things can be confusing). I got the pin numbers scl 32 and sda 26 from the legend on the device itself, and I think they must be correct since it is able to reply with the [35] from the scan() function.
I tried looking at the Arduino code from GitHub to see if it does some kind of initialization of the DLIGHT before reading, but I can't figure it out.
Anyway thanks for replying Terry.
