Alarm clock settings which will be retrieved from RTC nvram //rtc.adjust(DateTime(2017, 12, 8, 20, 33, 0)); //set this to current time before first run of RTC. Comment out then upload again.

for this library I've used the following link's model to develop the library https://www.zpag.net/Electroniques/Arduino/8x8_dot_matrix_1588bs.html please refer to ...

Returns must be unused and in their original, undamaged packaging. Smith: it's an 8 inputs & 8 outputs precision buffered matrix with presets. Each of the 8 outputs can take the signal from any of the ...