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Published on Mar 19, 2016
Generic STM32 board comparison with Arduino Pro Mini or Nano Currently such cheap STM32 boards (aka "Blue Pill") are available for less than $2.20 on Aliexpress It is up to 12 times faster than ATMEGA 328 based Arduino, it is even faster than expensive ARM based MCUs like Arduino Duo.
Module specifications: Model: STM32F103C8T6 Core: ARM 32 Cortex-M3 CPU 72MHz working frequency 64K or 128K flash memory 20K SRAM 2.0-3.6V power 4-16MHz crystal Size: 5.3cm x 2.2cm Color: Blue
More information about configuring and programming of STM32: