Due to insufficient memory chip, and can't modify the hardware circuit, the encapsulation of the same ATMEGA168, so choose pin and a lot of problems in the process of modify the program, do not know to have to upgrade or use a friend, give me some ideas, or matters needing attention, the recent mood is a bit badly from the explosion, if the ATMEGA48-88-128-168 is used, hope you can add a qq: 1911733869,