@ instructables.com build an alternative board to Arduino using STM 32 series of mcus.
We love the Arduino board and it’s prototyping platform . It makes the complete prototyping process smooth and enjoying with the help of it’s add on such as Arduino IDE and a huge community support.But sooner or later you will find that the specifications provided by the arduino boards is not enough . And then the problem arises about which board should we use so that our desires are fulfilled.Also How easy is to use a non arduino board . After a good research I found that the STM 32 is perfect fit.
STM32 Arduino compatible board – [Link]