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Topic: im, running out of pins (Read 1 time) previous topic - next topic


What else do you have connected to your Arduino? It's often possible to use the same pin to drive multiple devices. For example, if you already have an LCD display connected, you can probably share 4 pins between the LCD and the keypad.
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ive got a 4 line lcd im running on 2 pins, but a Voltage Divider Ladder is perfect for what i need


You can make two ICs communicate with I2C, or you can use a shift register/driver IC
What is man's best friend? The breadboard!


Instead of answering, questening, how we can run LCD on two pins only ?


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