From reading the article Using STM32 Core Support for Arduino for Board Nucleo L432KC by Ajarn Rewat Siriphokapirom, we have provided the board to test and connect the pin for sending data output DAC to ADC as shown in Figure 1 to test the operation of the DAC and ADC of the board by using the working code like the ESP32 microcontroller board, SAM-D21 and LGT8F328P. Let’s get started.