Editing Tapuino / Tape Emulation Mods (section)

=== Electrical Interface ===
The Tapuino connects to the six-pin '''cassette port''':

* '''+5 V''' (pin 2) – powers the MCU (≈70 mA peak with OLED).  
* '''GND''' (pin 1)  
* '''MOTOR''' output (pin 5) – emulated by polling; Tapuino ignores the line or gates file play.  
* '''READ''' (pin 4) – 0/+5 V pulse stream generated by DAC/bit-bang at original 300 baud or turbo rates.  
* '''WRITE''' (pin 3) – edge-captured and stored as WAV-like data when user presses “Record”.  
* '''SENSE''' (pin 6) – always pulled low (tape present).

Opto-isolation is optional; most PCBs use 74HC14/LM311 to shape the READ line back to digital logic levels.