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17.22 EXERCISES 441
3. A motion MEMS expansion board and an LCD are connected to a Nucleo-F411RE
development board. Write a program to read and display the relative humidity on the LCD
every 5s.
4. A brushed DC motor is connected to the expansion board X-NUCLEO-IHM13A1 which is
plugged on top of a Nucleo-F411RE development board. Write a program to run the motor
at 25% of its full speed.
5. An industrial digital output expansion board is plugged on top of a Nucleo-F411RE
development board. Write a program to count up in binary on the LEDs every second.
