ripper121:
Is there a plcc32 socket were the atmega328p-mu fits?
Or are ther other options to change a smd atmega328p without soldering and small space?
The -MU variant is QFN, I don't believe there are sockets for such chips, if there are
they are specialised (ie v. expensive).
Even the sockets for the TQFP version (-AU) are hard to find and expensive, and they are
large ZIF sockets, used for programming.
For surface mount parts the normal approach is a break-out board.