Hi.
I make this project digital clock and thermometer, too.
Make on some veroboards, connecting wires point to point with -4 indicators from Kingbright SA56-11EWA at 595 driver's outputs, with some little changes. In future interesting make this project with bigger digits.
1. In place of BC557, put 2 n-p-n BC547 transistors, which inverted pulse of seconds and when I see temperature on display, seconds dot is off,
2. I am not a programist, but have interest. Thanks, to find both clock_temp628.hex and clock_temp628.c, made some code comparision ,calculate, write right code in .hex file ,that changes little " c " to bigger" C " on indicator. Looks better!
But I have similar interest to view "-" temperatures, about this read in topics earlier . For example for better view of negative temperature sign, may be "-"sign may to placeded in non standard place as: " 'C - " .Because the 4-th indicator is off anyway and have free " G " SEGMENT?