or ti's,nxp's arm chips.I printed my own design circuit to pcb when I use pic series microcontrollers.But I write code to stm32f4 for a months and I didnt make pcb since that time.can you help me about this subject.should I print my design with stm32f4.Because that was too easy and cheap to print and I used most of the pins of chips.For example;I designed circuit mixed of analog and power electronics and it works well on breadboards but now,I need an adc to displaying.What do you offer me?