IMPORTANT.
- Tiny library. It's crucial for boards with a limited resources, based on ATmega328/168 or ATmega32u4 chips. It provides only 3 methods: init(),setDelay() and read().
- It supports as plain keypads (4x4,4x3 and so on..) with 8 pins I/O (or less) as these keypads behind of i2c converters like PCF8574 (remote I/O expander). I2C interface use only 4 wires. It's crucial for boards with limited resources too.
- Examples are provided. First of all use them.
LIMITATIONS
Max size of supported keypads is 4x4 due to a single control byte is used.
DETAILS.
Look at WIKIs -->