A small portable device featuring timer, clock, and calendar functions, equipped with a simple and functional interface and a truly long battery life.
Currently, one IRQ needs to be executed for each byte and the bits are read manually. A while (true) reading from the pins and doing the handshaking might be better suited. A FIFO-buffer should be ...
BC7595 -- 6 digits 7-segment LED display with 48-key key matrix driver BC7591 -- 32 digits 7-segment LED display with 96-key key matrix driver This library is available for all Arduino devices, and ...