got this pcb working:
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I'using AVR ( Arduino2560 ) and mikroPascal.
My code is based on this C-coded project in libStock:https://libstock.mikroe.com/projects/vi ... ed-amp-key
in combination with the TM1638 datasheet for more explenation.
I don't know C, but with 'reading' the C-code with some common-sence, the help of the datasheet
and modiyfing I managed to get things work!
Handling the STB-bit correctly, is a big key!
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Posted video of pcb working...https://www.youtube.com/watch?v=1q_H-IFK3f4