HPDL1414

A library for the I2C 16 port LED/GPIO driver compatible with most MCU's. The HPDL1414 (and his variants from other brand) it's an old vintage look alphanumeric led display.<br>It use a lot of pins so I've managed to interface with a GPIO chip and now it's possible use one or more chained together with just 3 wires.<br>This library needs my gpio_expander library.