I2C backpack for LCDs
$1.90
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This I2C backpack module can be mounted on the back side of an LCD to enable I2C control which will only require only 4 wires, 5V, GND, SDA, and SCL. The I2C address of the module can be changed,
see Solder Jumper Configurable I2C Addresses link below under Resources.
Product Contents:
- 1 piece - I2C backpack
Specifications:
- I2C Backpack 8-bit I/O Expander IC:
- PCF8574A (PCF8574AT) Default I2C Address: 0x3F
- PCF8574 (PCF8574T) Default I2C Address: 0x27
- Eight different I2C address options configured with solder jumpers: A0, A1, A2
-
Refer to
Solder Jumper Configurable I2C Addresses link under Resources
Resources:
- Arduino LCD Library -- try the Addicore_2004-LCD_HelloWorld_i2c example sketch
- I2C Backpack 8-bit I/O Expander PCF8574/PCF8574A Datasheet (PDF)
- LCD setup guide for use with Arduino
- Solder Jumper Configurable I2C addresses
- Energia LCD Library (from Frank Milburn)
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