IIC/I2C/interface LCD1602 adapter board function library LCD2004 adapter version PCF8574 expansion board
Product description 1. Size: 41.5mm (length) * 19mm (width) * 15.3mm (H) 2. Weight: 5g 3.PCB Color: Black 4. Supply voltage: 2.5-6V 5. Support I2C protocol 6. With backlight power control, can be set by jumpers backlight power supply is connected. Plug jumper connected backlight power supply, unplug the jumper is off backlight power supply 7. The contrast can be adjusted by turning the blue potentiometer clockwise enhanced counterclockwise weakened. Potentiometer design on the front, enabling customers to freely adjust anytime 8. The modules can be cascaded up to 8 cascade. / A1 / A2 modify the device address via short circuit A0.
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