This article is a continuation of the previous article introducing the LGT8F328P board and its use of ADC and DAC. By focusing on the use for the chip LGT8F328P, which is different from the SAM-D21 in that it uses pin D4 as a pin that serves as DAC0 and the DAC circuit has a resolution of 8-bit.  The output can be from 0 to 255. The ADC sector uses pins A0, A1, … normally and has a resolution of 12 bits. Therefore, in this article, the connection pins from A0 to D4 are used in the experiment as shown in Figure 1.