Tag - 1602

LCD1602 I2C 位置定義說明

The I2C address of the module As indicated in the datasheet, the default I2C device address of PCF8574A is 0x3F: and the address of PCF8574 is 0x27: For the library, the 7-bit I2C address format is used so that's why we assign 0x3F / 0x27 as the address for the device. However, the module also provides flexibilities for developers to customize the address to prevent from address collision on the same I2C bus. This is achieved by short-circuiting the A0 / A1 / A2 pads indicated by the yellow...

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