I2C Module has a inbuilt PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display.
These modules are currently supplied with a default I2C address of either 0x27 or 0x3F. To determine which version you have check the black I2C adaptor board on the underside of the module. If there a 3 sets of pads labelled A0, A1, & A2 then the default address will be 0x3F. If there are no pads the default address will be 0x27.
The module has a contrast adjustment pot on the underside of the display. This may require adjusting for the screen to display text correctly.
SPECIFICATION:
IC Chip |
PCF8574 |
Input Voltage Range(VDC) |
5 |
PCB Size ( L x W ) mm |
42 x 20 |
Weight (gm) |
4 |
Shipment Weight |
0.005 kg |
Shipment Dimensions |
8 × 7 × 3 cm |
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