I have a Grove Base Shield and it seems that it does not work with Arduino Mega and it works for Arduino Uno (it says it is compatible to Arduino Mega)

Products & Technology Shields
6

Hi Bill,

Sorry to write to you again. You said that I can use the UART socket in the base shield? What pins are used for this socket then? Is it 0 and 1? Thanks a lot!
Kind regards,

Jian