I'd be interested to hear from anyone that builds one.
i order 6 PCB and build now two
i am very glad ist works fine for my next projects
the only problem was the fastLED Libery
the timing for one LED 30µs was 33µs 10% to slow, but it is seen only a problem with the m1284p, timing is perfect on m328p
i made a temporary fix
#if defined(AVR_ATmega1284P)
#ifdef WS_KORR
#undef F_CPU
#define F_CPU 14400000UL
#endif
#endif
i know that every timing based on F_CPU is now 10% to fast, but there ist no Problem on SPI an I2C with Nokia LCD 5110 and RTC DS1307, in my Code i can corrected it by my self....
Pics?
first try
wow, m1284p is on
first work
too slow

build



