I recently bouth a colour LCD screen ITDB02 (2.4D model, with SD port) with the ITDB02 MEGA shield (with RTC) for my Arduino MEGA,
but I can't see anywhere the specification of the battery I need for the RTC to stay alive. Can someone help me ?
Is it something like a 3V CR2032 ? There is a "28" embossed in the plastic of the battery holder, but l can't read anything on the SO8 chip itself.
The shield comes from iteadstudio.com but I couldn't get the info from them. Diameter seems to be 19mm.