Getting more I/O pins on ATTiny with Shift Registers

If you previously worked(or currently working) with small 8-bit microcontrollers, like ATTiny or PIC12, you've probably encountered a fundamental problem of not having enough GPIO pins for your needs or project requirements. Upgrading to a larger MCU is only one of the options, but as usual there is an alternative. In this article I will explain how to use shift registers in some common situations in order ...

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