The STM32F103C8T6 is an Arduino Nano format inspired stm32 ARM cortex 32-bit-based development board.
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Pro 12bit ADC resolution
The STM32F103C8T6 has a 12bit ADC resolution, which represents 0-3.3 volts in 0 to 4096 steps, which is better than 10bit, which contains only 1024 steps
Pro Faster than your average microcontroller
With its stm32 arm cortex 32bit archetecture, the STM32F103C8T6 has much more computational power than most of the competition in its price range.
Con 20ma max current per pin
The STM32F103C8T6 has a 20ma absolute maximum limit on current tollerated per pin (8ma recomended)