06 Serial communication test (including Bluetooth test)
PrefaceIn the previous few articles, we have had a preliminary understanding and implementation of some resources of the development board. Next
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The following figure is a window comparator. Vref is variable from 0 to 5V. The voltage on R2 is guaranteed by an external adder to be always 100mV higher than Vref. Theoretically, when Vref is a cert