When there is power available in both pins, the VIN pin has priority and will be selected automatically to power up the LCD module and the backlight in cases where there is no VIN available, the VCC pin will power up the whole board. The recommended voltage range for the VIN pin is 7 to 12V (absolute maximum of 20V) the range for the VCC pin is 4.5 to 5.5V (5V typical). Power supply: the board power is supplied via the VIN and VCC pins: VIN is optional but VCC is required. For applications where the ambient temperature is consistently higher than 50✬ and there is no airflow, we recommend use of an external power supply with a maximum voltage of 9V, or our PowerLDO Nanoshield. Don't worry however, since the board and the components were designed to operate with much higher temperatures without a risk of overheating (but probably you fingers weren't, so beware). Note: with the backlight on, the power consumption of the board is relatively high, and the voltage regulator can get quite hot when the system is powered from an external power supply. The LCD is equipped with a backlight that can be controlled via software by using the backlight() and noBacklight() methods in our Nanoshield_LCD software library. To use the LCD Nanoshield, we provide an Arduino library that allows you to easily control the LCD using only two I/O pins of the I2C interface. This is the same standard used in the LCD library that comes with the Arduino IDE. The internal LCD controller is compatible with the HD44780 chip from Hitachi, a de facto standard in the market for this kind of LCD. You can connect many independent LCDs on your project at the same time (up to eight!).Only two Arduino pins are used for all communication, freeing more pins for other functions.You can connect it together with other Nanoshields that use I2C communications without any conflicts.The LCD Nanoshield uses an I2C communication interface, allowing greater flexibility when connecting it together with other Nanoshields: That allows you to show text messages or sensor data to the user, for example. With it, you can display two lines of text with up to 16 characters. I2C interface – uses only two microprocessor pinsĪn easy way to add a simple visual interface to your project is by using an LCD Nanoshield.Does not overload Arduino's voltage regulator.Up to 8 simultaneous and independent LCDs.
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