Generic STM32 vs Arduino Pro Mini/Nano speed comparison

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:

https://github.com/rogerclarkmelbourne/Arduino_STM32

http://stm32duino.com/

Computational power comparison:
https://www.youtube.com/watch?v=RD5VO8o9bD4

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