A few years ago, I purchased one of these 16×2 LCD and Keypad Arduino shields. There are quite a few of them around (including some clones?), but they are similar to this one from DF Robot: I think I bought this one from eBay a few years ago, but none... read more

In the context of a project involving the utilization of an ATmega2560 with a custom bootloader (predicated on the Arduino Mega bootloader using the stk500v2 protocol), it was found that the optimal baud rate for programming was 38400, given the use of an 8MHz crystal. The default configuration of avrdude, when employing the programmer switch, doe... read more